--- title: "The Sixteen Contemplations: A Designed Cognitive-Visual Architecture — From Buddha-Contemplation Methodology to Linear Ladder and Nine-Grade Differentiation" author: "釋慧鏡 (Shi Huijing)" series: "Six Practice Gates, Volume 1 — Mindful of the Buddha: From Early Buddhist Recollection to the Flower Ornament Vision" series_short: "NIAN" volume: 1 paper_id: "NIAN-P10" paper_number: 10 part: "Part IV · The Three Pure Land Sūtras" part_number: 4 date: "2026-04-17" version: "1.0" license: "CC BY-NC-SA 4.0" --- # The Sixteen Contemplations **A Designed Cognitive-Visual Architecture — From Buddha-Contemplation Methodology to Linear Ladder and Nine-Grade Differentiation** *中文主題：十六觀——設計過的認知視覺架構* --- **Author:** 釋慧鏡 (Shi Huijing) **Date:** April 2026 **License:** CC BY-NC-SA 4.0 **Version:** 1.0 **Series:** NIAN — Mindful of the Buddha --- ## Abstract Continuing from P09's analysis of the forty-eight vows of the *Sūtra of Immeasurable Life* (T0360) as a designed architecture, this paper takes up the second text of the Three Pure Land Sūtras — the *Sūtra on the Contemplation of Amitāyus* (T0365) — and its **sixteen contemplations** (*shíliù guān* 十六觀). The paper argues three things. First, the sixteen contemplations are not a prolix list of visualization techniques but a single architectural act of **systematization**: the visualization methodology is inherited from the *Sūtra on the Ocean-Samādhi of Buddha-Contemplation* (T0643, translated by Buddhabhadra around 418–422 CE, some ten to twenty years earlier than T0365), but the ordinal sixteen-step **linear sequence** is the original contribution of T0365. T0643 supplies a thematic menu; T0365 supplies a route-map. Second, the ordering logic of the sixteen contemplations is a three-axis geometry — **outer environment → inner Buddha-body → grade of rebirth**: contemplations 1–6 treat the dependent retribution (*yībào* 依報, the land as environmental support), 7–13 treat the direct retribution (*zhèngbào* 正報, the Buddha's body and retinue), and 14–16 treat the nine grades of rebirth. Internal transitions operate on three pedagogical warrants — "borrowed similar object" (water → ice → beryl), "false for entering the true" (image → true body), and "great object / small mind" retreat (true body → composite contemplation). Zhiyi's *Commentary on the Sūtra on the Contemplation of Amitāyus* (T1750, 0193a17–19) already articulates this cognitive ladder in the seventh century: "Because the Dharma-body in its ultimate subtlety cannot be contemplated in a single leap, one first practices image-contemplation until fluent, and afterward the contemplation of the Dharma-body becomes easy" (translation mine). Third, the nine grades of rebirth (contemplations 14–16) serve as the architectural terminus by differentiating access through four independent variables — practice-capital, reception-ceremony, lotus-opening duration, and attainment-rung — of which the lower-grade lower-birth's "accomplishing the ten recollections, reciting *Namo Amitābha Buddha*" is the architectural **floor**. This floor is structurally isomorphic with the floor-not-pinnacle position of vow 18 argued in P09: the two architectures together disclose the design signature of the Three Pure Land Sūtras — **lowest threshold coupled with maximum reception**, placed at the system edge as load-bearing node. §IV engages the intra-Buddhist commentarial perspective of Zhiyi's T1750 and the *Mahāyāna Calming-and-Contemplation* (T1911), and §V clarifies that "Zhiyi's four kinds of buddha-recollection" is a later reduction, not T1750's original terminology (T1750 itself gives a **three-fold** classification). **Keywords:** sixteen contemplations, T0365 *Sūtra on the Contemplation of Amitāyus*, T0643 *Sūtra on the Ocean-Samādhi of Buddha-Contemplation*, Buddhabhadra, Kālayaśas, T0277 *Sūtra on the Practice Method of Contemplating Samantabhadra Bodhisattva*, Dharmamitra, contemplation-sūtra cluster, Liu-Song Yuanjia translation-period, Vaidehī, image-contemplation, true-body contemplation, propaedeutic ladder, nine grades of rebirth, lower-grade lower-birth, ten-recollection name-invocation, T1753 Shandao's *Four-Fascicle Commentary*, meditative-dispersed differentiation, seven-gate profound meaning, T1750 Zhiyi's *Commentary*, five-fold profound meaning, three-fold segmentation, three kinds of buddha-recollection, four kinds of Pure Land, T1911 *Mahāyāna Calming-and-Contemplation*, constant-walking *samādhi*, designed cognitive architecture, systematization. --- --- ## I. Introduction: When the Sixteen Contemplations Are Misread as a Checklist When Western English-language Buddhist scholarship first encountered the *Sūtra on the Contemplation of Amitāyus* (T0365), the typical presentation was a numbered list of sixteen items: "1. Contemplation of the Sun; 2. Contemplation of Water; 3. Contemplation of the Ground; …; 16. Contemplation of the Lower Grade." Textbooks, introductory readers, and meditation manuals handled the sūtra in variants of this format. The ergonomic virtue of the list is real: readers quickly come away knowing *which contemplations are in there*. The structural cost is **flatness** — the sixteen contemplations come to look like sixteen parallel visualization techniques, each answering to its own local operation, connected only by enumeration. This flatness obscures two matters. **First**, the sixteen contemplations are **not** a spontaneously produced list nor an *ad hoc* composition. P09 has already argued that the forty-eight vows of T0360 are a designed architecture — with soteriology as *telos*, the container-world / sentient-world dual axis as skeleton, and an identifiable expansion trajectory as diachronic signature. P09's closing passage has already set the baton: if T0360 gives us the architecture at the level of vow, T0365 will give us a complementary architecture at the level of **cognitive visualization**.[^1] This paper takes up that thesis. Is the contemplation layer also an architecture? Or merely a list of visualizations? If architecture, what is its ordering logic? Is that logic historically inherited, or originally created? **Second**, the sixteen contemplations have a **deep structure**. Shandao's *Commentary on the Sūtra on the Contemplation of Amitāyus* (T1753, *Four-Fascicle Commentary*) divides the sixteen into "thirteen meditative-good contemplations + three dispersed-good contemplations (that is, the nine grades across three classes)"; Zhiyi's *Commentary* (T1750) takes the further step of reading the sixteen as "six for the dependent fruit + seven for the direct retribution + three for rebirth."[^2] Both Shandao and Zhiyi saw that the sixteen possess a designed sequence, not a flat list; both, in the seventh century, systematically articulated that sequence with their own commentarial tools. Two to three centuries earlier — within ten to twenty years of T0365's translation (418–422 CE) — Buddhabhadra had already translated the *Sūtra on the Ocean-Samādhi of Buddha-Contemplation* (T0643), whose twelve thematic chapters laid out the full methodology of buddha-contemplation *samādhi*. But T0643 had no numbering, no linear sequence.[^3] Within that brief span of ten to twenty years, buddha-contemplation was reorganized from thematic menu into linear route-map. That reorganization is itself an architectural act — analyzable, locatable in history. The task of this paper is to lift that fact into view, through the three-layered argument of §III. **First**, the sixteen contemplations are a double act of inheritance and innovation: the methodology (the thirty-two marks and eighty minor characteristics, the light-ray imagery, the white curl (*ūrṇā*), the image-contemplation protocol, the right-contemplation / wrong-contemplation verdict-formula) is inherited from the already-established buddha-contemplation *samādhi* tradition of T0643; the linear sixteen-step ordinal sequence is the original creation of T0365. T0643 gives a menu; T0365 gives a route-map. **Second**, the ordering logic of the sixteen contemplations is a three-axis geometry of **outer environment → inner Buddha-body → grade of rebirth**: 1–6 treat the outer dependent fruit, 7–13 the direct-retribution Buddha-body system, 14–16 the nine grades of rebirth. Internal transitions operate on three warrants — "borrowed similar object" (water → ice → beryl), "false for entering the true" (image-contemplation → true-body contemplation), and "great object / small mind" retreat (true body → composite contemplation). Zhiyi's gold quote in T1750 — "Because the Dharma-body in its ultimate subtlety cannot be contemplated in a single leap, one first practices image-contemplation until fluent; afterward the contemplation of the Dharma-body becomes easy" (0193a17–19, translation mine) — gives this cognitive ladder its seventh-century commentarial statement.[^4] **Third**, the nine grades of rebirth (contemplations 14–16) serve as the architecture's terminal differentiation — nine classes of access arranged by four independent variables — and the lower-grade lower-birth's "accomplishing the ten recollections, reciting *Namo Amitābha Buddha*" is the architectural **floor**. This floor is isomorphic with the floor-not-pinnacle position of vow 18 argued in P09, revealing the common design signature of the two Pure Land architectures: **lowest threshold coupled with maximum reception**, placed at the system edge as load-bearing node. §IV bridges through the intra-Buddhist commentarial perspective of Zhiyi's T1750 and *Mahāyāna Calming-and-Contemplation* (T1911), displaying how T0365's first systematic commentator read the architecture. §V treats three popular misreadings: "Zhiyi's four kinds of buddha-recollection are T1750's original terminology" (philological correction — T1750 is in fact *three-fold*); "the sixteen contemplations are a collection of *dhyāna* techniques" (architectural correction); "the nine grades are a tripled version of the three classes" (functional-differentiation correction). §VI turns toward P11 — if T0366 (the *Shorter Sukhāvatīvyūha*) compresses the sixteen-step route into a single phrase "hold the name," is this architectural convergence, or a new architecture altogether? That question is left for P11. --- ## II. Scriptural Foundations ### 2.1 The *Sūtra on the Contemplation of Amitāyus* and the Textual Skeleton of the Sixteen Contemplations T0365 opens in a scene of worldly defilement: at Rājagṛha, King Ajātaśatru has imprisoned his father and very nearly murdered his mother. Queen Vaidehī, confined, turns from afar to Vulture-Peak (*Gṛdhrakūṭa*) and petitions: > "May the World-Honored One expound for me a place free of sorrow and affliction, that I may be reborn there — I no longer take pleasure in this evil and defiled Jambudvīpa. … May the Buddha-sun teach me to contemplate a place of pure karma."[^5] The Buddha, emitting light from between his brows, illumines the ten directions with their measureless lands, so that Vaidehī may see all the Pure Lands of the Buddhas of the ten directions. Vaidehī **compares and chooses** the Land of Bliss and then formally requests: > "World-Honored One, though these buddha-lands are pure and all have radiance, I now wish to be reborn in the Land of Bliss where Amitābha Buddha dwells. I beseech you: teach me to *think upon it* (*sīwéi* 思惟), teach me to *receive it rightly* (*zhèngshòu* 正受)."[^6] "Teach me to think upon it, teach me to receive it rightly" — these eight characters are the ignition key of the sixteen-contemplation architecture: *thought* (imagination, *sīwéi*) and *right-reception* (*samādhi*, *zhèngshòu*) are the dual drive-shafts. But the sūtra does not begin immediately with the contemplations. It first establishes the **three meritorious acts** (*sānfú* 三福) as the proper cause of pure karma: filiality to parents and service to teachers with a mind of kindness that does not kill (*worldly merit*); upholding the threefold refuge and the complete body of precepts (*precept-merit*); arousing *bodhicitta*, deeply believing in cause and effect, reciting the *Mahāyāna*, and encouraging practitioners (*practice-merit*).[^7] The sixteen contemplations are not isolated visualization techniques — they stand on the three-layered ground-plate of ethics, discipline, and *Mahāyāna* aspiration. The formal contemplations are launched from: "You and all sentient beings should concentrate your minds, fix mindfulness in one place, and think upon the West."[^8] For the purposes of §III, six representative contemplations are cited here. **① Sun-contemplation.** "One should arouse mindful thought, sit upright facing west, contemplate the sun steadily, letting the mind rest firmly, concentrating without wavering. Behold the sun about to set, shaped like a suspended drum … This is the sun-thought, the first contemplation."[^9] The entry-point is a verifiable natural object (the setting sun) that any non-blind person can operate. **⑥ Comprehensive Contemplation.** "This thought being accomplished, one is said to have gained a rough sight of the jewel-trees, jewel-ground, and jewel-ponds of the Land of Bliss. This is the sixth comprehensive contemplation. Should one see this, one's boundless-eon heavy evil karma is removed; after death one will surely be born in that land."[^10] The outer objects enumerated in the first five contemplations are here fused into an integrated Pure Land scene; the triple recollection (recollection of the Buddha, of the Dharma, of the *Saṃgha*) makes its first appearance. **⑦ Lotus-Throne Contemplation.** "Those who wish to contemplate the Buddha should arouse mindful thought and visualize a lotus-flower upon the seven-jewel ground. … This wondrous flower is brought into being by the vow-power of Bhikṣu Dharmākara. Those who wish to be mindful of that Buddha must first make this wondrous flower-seat thought."[^11] The lotus-throne is the interface between outer environment and Buddha-body; Dharmākara's forty-eight vows enter the contemplation-layer here for the first time — this is the junction where P09's vow-layer architecture meets P10's contemplation-layer architecture. **⑧ Image-Contemplation.** "All buddha-tathāgatas are the dharma-realm body, entering everywhere into the thought-minds of sentient beings. Therefore when your minds think upon the Buddha, that very mind is the thirty-two marks and the eighty minor characteristics. **This mind makes the Buddha; this mind is the Buddha.** The buddhas' correct-and-pervasive-cognition ocean is born from thought-minds. … Those who wish to think upon that Buddha should first think upon the image."[^12] "This mind makes the Buddha; this mind is the Buddha" is the sūtra's most critical consciousness-theoretical thesis. Image-contemplation is not a game of representation but the direct appearance of the dharma-realm body within thought-mind. **⑨ True-Body Contemplation.** "This thought being accomplished, one next contemplates the body-marks and radiance of Amitāyus Buddha. … Amitāyus Buddha possesses eighty-four thousand marks; each mark possesses eighty-four thousand minor characteristics; each characteristic possesses eighty-four thousand rays of light; each ray illumines the ten-direction worlds — **gathering in and never abandoning the sentient beings who are mindful of the Buddha**."[^13] "Gathering in and never abandoning the sentient beings who are mindful of the Buddha" is the hard textual core of the Pure Land reception-doctrine within the sūtra itself. **⑯ Lower-Grade Lower-Birth.** "Or there are sentient beings who commit unwholesome acts — the five heinous deeds, the ten evil deeds, all manner of unwholesome things. … Pressed by suffering, such a person has no leisure to be mindful of the Buddha. A good friend tells him: 'If you cannot be mindful of that Buddha, you should *call out in refuge to Amitāyus Buddha*.' With sincere mind and sound unbroken, accomplishing ten recollections, reciting *Namo Amitābha Buddha* — because of reciting the Buddha's name, in thought after thought the sins of eighty *koṭi* eons of birth-and-death are removed. … Within the lotus, he remains for twelve great eons before the lotus opens."[^14] This is the textual basis for the architectural floor; the detailed nine-grade structure is treated in §3.3. **Structural observation.** T0365's own text already marks out a four-segment structural grammar: "fix mindfulness in one place" (ignition of the first contemplation) / "this is the comprehensive contemplation-thought" (closing the outer-environment segment at the sixth) / "this mind makes the Buddha; this mind is the Buddha" (turning into Buddha-body philosophy at the eighth) / "those born in the West are of nine grades" (turning into the reception-differentiation at the fourteenth). These four markers are *internal self-annotations* of the sūtra, not the *imposing* of later commentarial hands.[^15] The circulation-portion closes by juxtaposing two titles: first, "*Contemplating the Land of Bliss, Amitāyus Buddha, Avalokiteśvara, and Mahāsthāmaprāpta*" (the buddha-contemplation *samādhi* orientation); second, "*Purifying Karmic Obstacles and Being Born before All Buddhas*" (the buddha-recollection / rebirth orientation).[^16] The very end of the sūtra states: "The Buddha said to Ānanda: 'Hold well to these words. To hold these words is to hold the name of Amitāyus Buddha.'"[^17] The whole architecture of contemplation is finally reduced to "holding the name" — its terminal release. Contemplation (the sixteen contemplations) and name-invocation (the ten recollections) are not opposed within T0365 itself: contemplation is the full architecture, name-invocation is the floor-access channel, and both are of one body. ### 2.2 The *Sūtra on the Ocean-Samādhi of Buddha-Contemplation*: The Direct Upstream Source The *Sūtra on the Ocean-Samādhi of Buddha-Contemplation* (T0643) was translated by Buddhabhadra (*Fótuó-bátuóluó* 佛陀跋陀羅, 359–429 CE) of the Eastern Jin, around 418–422 CE — some ten to twenty years before Kālayaśas's translation of T0365 (ca. 424–442 CE at Jiankang). T0643 is the **direct upstream source** of T0365's sixteen-contemplation system, not a parallel text.[^18] T0643 is framed by the father-king (Śuddhodana) addressing the Buddha: "World-Honored One! The Buddha is my son; I am the Buddha's father. … After the Buddha's nirvāṇa, how shall the sentient beings of later ages contemplate the Buddha's bodily form and marks?"[^19] Buddha-contemplation *after the Buddha's passing* — this framing is, together with T0365's "I have borne this evil son" framing by Vaidehī, the shared hook of the end-time contemplation-sūtra genre. The Buddha answers with a three-component formula: "With sincere mind one ties mindfulness within, sits upright in right-reception, and contemplates the Buddha's bodily form — such a person, know this, has a mind like the Buddha's mind, no different from the Buddha."[^20] "A mind like the Buddha's mind, no different from the Buddha" is the grammatical antecedent of T0365's "this mind makes the Buddha; this mind is the Buddha." T0643's buddha-contemplation methodology is complete: the thirty-two-marks-and-eighty-minor-characteristics framework (chapter "Observing the Ground," *xù guān dì pǐn* 序觀地品 — chapter two); the elaborate contemplation of the white curl (*ūrṇā*, chapter "On the Marks, Part 2," including the passage on "the light of the white curl descending to correspond with Avīci hell"); the layered transparency of the *uṣṇīṣa*; the thousand-spoked wheel and the *svastika* on the palm; and crucially, the **full image-contemplation protocol of chapter 9** (*Observing the Image*, *guān xiàng pǐn* 觀像品) — entering the *stūpa*, smearing the ground, burning incense, scattering flowers, confessing, sitting cross-legged, tying mindfulness, then contemplating from toe to crown (reverse) or from crown to toe (forward).[^21] The mechanical structure of T0365's eighth contemplation (image-contemplation) inherits this protocol directly; the only substitution is the image contemplated — T0643's Śākyamuni-image becomes T0365's Amitābha-image. But T0643 does one thing it does **not** do: give an ordinal sequence. Its twelve-chapter arrangement is thematic-taxonomic (Six Similes / Observing the Ground / Observing the Marks parts 1–4 / Observing the Buddha's Mind / Observing the Four Immeasurables / Observing the Four Postures / Observing the Hidden Organ / Original Practice / Observing the Image / Recollecting the Seven Buddhas / Recollecting the Ten-Direction Buddhas / Observing the Buddha's Secret Practice). Within each chapter, parallel "some sentient beings delight in contemplating X" lists enumerate twenty-odd options without rank-order.[^22] The only directional encoding is forward / reverse — crown-to-toe or toe-to-crown — but this is a traversal rule, not a step-number order. At the end of fascicle 10, Ānanda asks for the sūtra's title, and the Buddha gives seven alternate names from his own mouth, two of which are decisive: > "This sūtra … is also named *Ocean-Samādhi of Buddha-Contemplation*; it is also named *Gate of the Samādhi of Buddha-Recollection*. … Receive and hold well; be careful not to forget it."[^23] **Buddha-contemplation *samādhi* = buddha-recollection *samādhi*.** Within T0643 itself, the Buddha equates the two terms by declaring them alternate names of the same text. This is the first clear documentary evidence in Chinese translation of the identification of "buddha-recollection" (*niàn fó* 念佛) with visualization-type *samādhi*. Later figures — Shandao, Hōnen — would judge the difference of "contemplating-recollection" versus "oral-recollection" along exactly this "*niàn* = *guān*" lineage that T0643 and T0365 had first opened. ### 2.3 The *Sūtra on the Practice Method of Contemplating Samantabhadra Bodhisattva*: The Contemporary Parallel The *Sūtra on the Practice Method of Contemplating Samantabhadra Bodhisattva* (T0277) was translated by Dharmamitra (*Tánwú-mìduō* 曇無蜜多, d. 442 CE) at Yangzhou during ca. 424–442 CE — **completely overlapping with T0365's translation period**, both part of the Liu-Song Yuanjia-era Jiangnan translation-bureau's "contemplation-sūtra cluster."[^24] T0277 and T0365 share six structural features: (a) end-time / suffering-frame request narrative (Buddha's prediction of *parinirvāṇa* in three months, versus Vaidehī's imprisonment); (b) *Mahāyāna*-recitation / visualization as entry; (c) light-circulation imagery (T0277: light enters Samantabhadra's elephant's sense-faculties; T0365: white-curl light enters sentient beings' minds); (d) time-graduated verification-signs; (e) karmic-obstacle reduction merit (T0277: "will not fall into evil destinies for *asaṃkhyeya* eons"; T0365: "eighty *koṭi* eons of birth-and-death sins"); (f) **word-for-word shared right-contemplation / wrong-contemplation verdict-formula** — T0277's "one who makes this contemplation is called right-contemplator; one who makes other contemplation is called wrong-contemplator" and T0365's identical formulation are structurally and lexically identical.[^25] This near-verbatim correspondence is hard linguistic evidence of T0277 and T0365 belonging together within the Liu-Song Yuanjia contemplation-sūtra cluster. But in **direction of spatial movement** the two sūtras are exactly opposed: T0277 expands centrifugally from Samantabhadra's elephant-body outward to the buddha-lands of the ten directions; T0365 converges centripetally from outer objects inward to the Buddha-body and then downward into the nine grades of rebirth. This directional inversion is not accidental — T0277's governing axis is the practice of Samantabhadra, naturally centrifugal; T0365's governing axis is the Buddha-body of the Land of Bliss, naturally centripetal. T0365's convergence is what supports the paper's main thesis: a *designed route-map* requires a determinate *terminus*, and that *terminus* is the double closure of the Buddha-body (⑨) and the nine-grade entrance (⑭⑮⑯). ### 2.4 Shandao's *Four-Fascicle Commentary*: Structural Tools Shandao (613–681) compiled the *Commentary on the Sūtra on the Contemplation of Amitāyus* (T1753, *Four-Fascicle Commentary*) in four fascicles corresponding to the sūtra's full text: "Profound Meaning" / "Prologue Meaning" / "Meditative-Good Meaning" / "Dispersed-Good Meaning."[^26] This paper takes only his **structural tools** — the *ordinary-being into recompense-land* thesis, the two-kinds-of-deep-faith (*jīfǎ èr-zhǒng shēnxìn* 機法二種深信), the right-determining act (*zhèng-dìng-yè* 正定業), the essential-and-extensive gate (*yào-hóng èr-mén* 要弘二門), and the suppressive-gate (*yìzhǐ-mén* 抑止門) doctrinal arguments all belong to P22. In fascicle one Shandao establishes the **meditative-good / dispersed-good differentiation** (*dìng-sàn èr-shàn* 定散二善): "From the Sun-Contemplation down through the thirteenth contemplation is named 'meditative good.' The three meritorious acts and the nine grades are named 'dispersed good.'"[^27] He provides a four-layer rationale: (a) **Difference of petitioner.** "The meditative-good gate is petitioned by Vaidehī; the dispersed-good gate is spoken by the Buddha of his own accord."[^28] Difference in source of request → difference in structural position. (b) **Difference of mental-practice state.** "'Thinking' (*sīwéi*) is the preliminary expedient before contemplation. … 'Right-reception' (*zhèngshòu*) is the cessation of thought-mind, the extinguishing of conditioned cogitation — correspondence with *samādhi* is named right-reception." Meditative good is the contemplation of "stilling conditioned thought, concentrating the mind"; dispersed good is the merit-practice of "abandoning evil and cultivating good." The two are divided in essence, not in quantity.[^29] (c) **Refuting mis-assignments by other masters.** Shandao refutes one by one the older division of "thinking belongs to dispersed / right-reception belongs to meditative," re-asserting that both belong within the meditative-good range — that the sixteen contemplations are *not* evenly distributed between the two gates but are the first thirteen only-meditative and the last three only-dispersed.[^30] (d) **Provision for dispersion-prone capacities.** "If one relied on meditative practice alone, the rescue of sentient beings would be incomplete; therefore the Tathāgata, through expedient means, opens the three meritorious acts to accommodate capacities of the dispersed-prone."[^31] This is the *explicit* statement of **floor-design**: meditative good accomplishes all it can; dispersed good supplies what it cannot. This design logic is structurally identical with P09's floor-not-pinnacle argument for vow 18. Shandao further establishes **seven gates of profound meaning** as the commentary's overall outline: designation of order / elucidation of names / clarification of tenets / determination of speaker / discrimination of meditative and dispersed / harmonization of sūtric and treatise-discrepancies / discrimination of benefit-scope.[^32] And for the upper-middle-lower three classes he sets an **eleven-gate comparative framework** — eleven gates × nine grades = ninety-nine discriminations as a potential grid for standardized reading of the nine grades.[^33] Shandao's most consequential structural verdict on the nine grades reads: "All are ordinary beings of the five defilements after the Buddha's passing — only because they encounter different conditions, the nine-grade distinctions arise. What are these? The upper three persons are ordinary beings who encounter the *Mahāyāna*. The middle three persons are ordinary beings who encounter the *Hīna*-yāna. The lower three persons are ordinary beings who encounter the evil-world (*good friend at the moment of death*)."[^34] The nine grades are thus rewritten from "sage-rank ladder" to "**differentiation of encountered conditions**." This verdict is the direct tool of §3.3's analysis. ### 2.5 Zhiyi's *Commentary* and *Mahāyāna Calming-and-Contemplation*: Intra-Buddhist Lens Zhiyi (538–597)'s *Commentary on the Sūtra on the Contemplation of Amitāyus* (T1750) is the earliest systematic commentary on T0365, nearly a century before Shandao's T1753. T1750 opens by applying the **five-fold profound meaning** (*wǔchóng xuányì* 五重玄義) — "explication of name / discernment of essence / clarification of tenet / discussion of function / judgment of teaching-type" — to T0365.[^35] Its core designation reads: > "This sūtra has *mind-contemplation as its tenet and reality-as-such as its essence*. As for 'the Buddha expounds the contemplation of Amitāyus Buddha': the Buddha is the superior object contemplated, raising the direct retribution to encompass the dependent fruit, narrating the principal transformer to include the retinue. Though the contemplations are sixteen, when one says 'the Buddha,' the whole is reached — hence 'the Buddha expounds the contemplation of Amitāyus Buddha.'"[^36] "Though the contemplations are sixteen, when one says 'the Buddha,' the whole is reached" — the sixteen-step contemplation gate is in fact a *single* contemplation (buddha-contemplation), with the Buddha totalizing the dependent and direct retributions. This is the seventh-century commentarial pre-echo of the thesis that the sixteen contemplations are a single designed architecture, not sixteen independent techniques. Zhiyi explicitly divides the sixteen contemplations into a **three-fold segmentation**: > "Within the sixteen contemplations, the text is divided into three parts. The first six contemplate the dependent fruit; the next seven contemplate the direct retribution; the final three clarify the three classes and nine grades of rebirth."[^37] Six + seven + three = sixteen. This segmentation provides the direct commentarial basis for §III's architectural analysis. Zhiyi also defines the sixteen contemplations in their entirety as a **"differentiated expedient"** (*yì fāngbiàn* 異方便): "'Differentiated expedient' refers to the sixteen contemplations. Not direct-contemplation — named 'expedient.'"[^38] Because Vaidehī's "thought-mind was feeble; she had not yet obtained the heavenly eye, and could not see that land from afar," a sixteen-step gradual expedient was needed to reach contemplation. This is the *raison d'être* of the sixteen contemplations: direct-contemplation is too difficult, and only a linear ladder can *grant access*. T1750 provides explicit warrant for sequential transitions. The water-ground watershed: "The previous water is imagination, which cannot extinguish sin. The ground-contemplation is real, and can therefore cut off [sin]."[^39] The second water-contemplation is classified as "imagination" (fabricated visualization); the third ground-contemplation is classified as "real" (in-*samādhi* actual vision) — the first quality-change point in the sixteen-contemplation sequence. Most critical is the **propaedeutic statement** for image → true-body: > "Therefore in contemplating the Buddha, one first makes the image-thought, and afterwards contemplates the Dharma-body. The *bodhisattva-yāna* directly clarifies the Dharma-body, but because the Dharma-body in its ultimate subtlety cannot be contemplated in a single leap, one first practices image-thought until fluent, and afterwards the contemplation of the Dharma-body becomes easy." (0193a17–21)[^40] "Cannot be contemplated in a single leap — therefore first practice image-thought until fluent" — this is the smoking-gun for §3.2's main thesis that the outer → inner propaedeutic is a cognitive ladder, not an arbitrary enumeration. Zhiyi, in the seventh century, explicitly articulated this sequential logic; this paper's claim is not an *imposing* of modern framing but a **recovery** of what was already clear in ancient commentary. Zhiyi further establishes **four kinds of Pure Land** as the metaphysical coordinate-system of the sixteen contemplations' destination — (i) Land of Common Residence of Ordinary and Sages (*fán-shèng tóng-jū tǔ* 凡聖同居土); (ii) Land of Expedient Remainder (*fāngbiàn yǒuyú tǔ* 方便有餘土); (iii) Land of True Recompense without Obstruction (*shíbào wúzhàng'ài tǔ* 實報無障礙土); (iv) Land of Eternal Quiescent Light (*chángjí guāng tǔ* 常寂光土). The Land of Bliss is classified within "the upper-grade Pure Land of common residence of ordinary and sages," with the other three higher Pure Lands retained as advanced paths.[^41] And he judges the sūtra as belonging "to the *Mahāyāna*-*vaipulya* teaching … the sudden teaching" — not viewing T0365 as expedient-provisional but as directly conducting ordinary beings into the sudden.[^42] Zhiyi's other major work, *Mahāyāna Calming-and-Contemplation* (*Móhē zhǐguān* 摩訶止觀, T1911), establishes in fascicle two the **four kinds of *samādhi*** — constant-sitting / constant-walking / half-walking-half-sitting / neither-walking-nor-sitting — classifying all practice under bodily-posture categories.[^43] Of these, **constant-walking *samādhi*** is the *pratyutpanna*-*samādhi* (echoing the main scene of P06), with Amitābha Buddha as the object of body (ninety days of constant walking), speech (ninety days of constantly invoking Amitābha's name), and mind (recollecting Amitābha's thirty-two marks in forward and reverse sequence).[^44] But T1911's full text makes no citation of T0365; T1750's entire commentary makes no citation of the four *samādhi*s — **Zhiyi himself did not lock these two architectures together**.[^45] Constant-walking *samādhi* is based on the *Pratyutpanna-samādhi Sūtra* (T0418), not on T0365. The work of locking together *contemplation* (the sixteen contemplations), *invocation* (ten-recollection name-invocation), and *rebirth* (the nine grades) into a unified Pure Land practice-gate was completed by Shandao, Genshin, and Hōnen in the two to three centuries after Zhiyi (P22/P23 main scenes). This "not-yet-locked" condition is itself a historical marker: the systematization of the architecture is diachronic, not instantaneous. --- ## III. Central Argument ### 3.1 Inheritance and Innovation: From the Methodology of the *Sūtra on the Ocean-Samādhi of Buddha-Contemplation* to the Sequence of the *Sūtra on the Contemplation of Amitāyus* T0365 did not invent visualization methodology *ex nihilo*. By the fourth and fifth centuries the Jiangnan translation-bureaus were circulating a full vocabulary of contemplation-techniques, time-graduations, verification-criteria, and karmic-obstacle-reduction schemas. Visualization was the shared technical toolkit of the era; T0365's architectural act lies not in inventing tools but in **organizing tools into a sequence**. Concretely, T0365 inherits four methodological items from T0643. First, the very **term "buddha-contemplation *samādhi*"**: at the end of T0643's tenth fascicle, the Buddha himself juxtaposes "Ocean of Buddha-Contemplation *Samādhi*" and "Gate of the Samādhi of Buddha-Recollection" as alternate names of the same sūtra,[^46] establishing the legitimacy of buddha-contemplation *samādhi* as an independent practice-type; T0365 inherits the term without needing to re-justify it. Second, the **thirty-two-marks-and-eighty-minor-characteristics framework**: T0643's "Observing the Ground" chapter uses this mark-system to define the object of buddha-contemplation; T0365's ninth true-body contemplation scales this framework up to the trans-ordinary measure of "eighty-four thousand marks, each with eighty-four thousand characteristics, each with eighty-four thousand rays of light."[^47] Third, the **light-ray imagery**: T0643's "the light of the white curl descending to correspond with Avīci hell" becomes T0365's "each ray illumines the ten-direction worlds, gathering in and never abandoning the sentient beings who are mindful of the Buddha."[^48] Fourth, the **image-contemplation protocol**: T0643's chapter 9 lays out in full the method of "substituting a Buddha-image for the Buddha after the Buddha's passing" — from entering the *stūpa*, smearing the ground, burning incense, scattering flowers, confessing, sitting cross-legged, and tying mindfulness, to reverse-contemplation from toe to crown (or forward-contemplation from crown to toe).[^49] T0365's eighth image-contemplation inherits this protocol item by item in its mechanical structure; the only substitution is the image contemplated — T0643's Śākyamuni-image becomes T0365's Amitābha-image. But T0643 did not do one thing, and T0277 did not do it either — and that one thing is precisely T0365's original contribution: **give an ordinal sequence**. T0643 organized its methodology into twelve thematic chapters; within each chapter, parallel "some sentient beings delight in contemplating X" lists enumerated twenty-odd unnumbered items.[^50] The reader chose an entry-point according to capacity. T0277 unfolds a narrative flow centered on Samantabhadra's elephant-body — rich and continuous, but without "first contemplation, second contemplation" numbering. What T0365 did was this: it selected an object (Amitābha Buddha plus the Land of Bliss), drew a sixteen-step linear sequence, and numbered each contemplation (sun, water, ground, jewel-trees, waters of the eight virtues, comprehensive contemplation, lotus-throne, image, true body, Avalokiteśvara, Mahāsthāmaprāpta, universal contemplation, composite-thought contemplation, upper class, middle class, lower class). **From menu to route-map** — this is an architectural act, not a content act. The trade-offs of menu versus route-map are plain: a menu advantages the sharp-faculty practitioner (who can self-select); a route-map advantages the dull-faculty practitioner (who can follow). T0365's *telos* is soteriology — specifically, the rescue of end-time ordinary beings (Vaidehī in the prologue as paradigm of the "sin-bearing, birth-and-death-bound ordinary being")[^51] — and therefore the choice of *path* over *menu* is the consequence of the design's logic, not an aesthetic option. ### 3.2 Outer → Inner → Grade-of-Rebirth: The Three-Axis Ordering Logic The ordering of the sixteen contemplations falls into three segments: **outer dependent-retribution environment** (1–6: sun, water, ground, jewel-trees, waters of the eight virtues, comprehensive contemplation) / **direct-retribution Buddha-body system** (7–13: lotus-throne, image, true body, Avalokiteśvara, Mahāsthāmaprāpta, universal contemplation, composite-thought) / **nine grades of rebirth** (14–16: upper class, middle class, lower class). This three-segment division is not an *imposing* of this paper — Zhiyi's T1750 explicitly establishes it;[^52] Shandao's T1753 likewise cuts the sixteen as "thirteen meditative-good (dependent-fruit 6 + direct-retribution 7)" against "three dispersed-good (the three-class nine grades)."[^53] Two major commentators independently arrived at the same three-segment division. The logic of the three axes can be read at three layers. **First layer (outer → inner).** Contemplations 1–6 begin from an outer object (the sun) and gradually deepen into the integrated scene of the Land of Bliss; contemplations 7–13 turn from the lotus-throne within that Pure Land scene into the Buddha-body, and then from image-contemplation (false) into true-body contemplation (real). This inflection is rationalized by Zhiyi's T1750 as a propaedeutic structure: "Because the Dharma-body in its ultimate subtlety cannot be contemplated in a single leap, one first practices image-thought until fluent; afterwards the contemplation of the Dharma-body becomes easy."[^54] Image-contemplation is not a "most elementary rung" but the **cognitive ladder** leading toward true-body contemplation. Once image-contemplation is skilled, the mind-eye opens; one roughly sees the dependent and direct retributions of that land's pure adornments, dispelling obscurity — this is the process of learning from visualized-borrowing toward actual buddha-vision. **Second layer (warrants of internal transition).** Each segment has explicit pedagogical warrants for its internal shifts. (a) **Water-contemplation as "borrowed similar object."** Shandao's T1753 identifies the design-intention of the water → ice → beryl sequence: "The level waters of this realm are taken to correspond to the level ground of that land, without high or low. And transforming water into ice corresponds to the inner-and-outer transparency of beryl of that land. … One must still use a similar object as the contemplated object, for only then can *samādhi* be readily obtained."[^55] Water is visible in this realm; the beryl of the Pure Land is not. Using the "visible similar object" as a stepping-stone to the "invisible real object" — this is concrete cognitive-bridging design. (b) **Image-contemplation as "false for entering the true."** Shandao's T1753, in the section on terminology, already says: "'False direct retribution' (*jiǎ zhèngbào*) is the eighth, the image-contemplation. … Because the obstacles of sentient beings are heavy and their staining delusions are deep, and because the Buddha fears that a sudden thought of the true countenance would have no manner of appearing, an expedient posits a *true image* upon which the thought-mind may dwell, identified with that Buddha as verification-object — hence it is called 'false direct retribution.' 'True direct retribution' (*zhēn zhèngbào*) is the ninth, the true-body contemplation. Because through the preceding false direct, scattered thoughts gradually subside, the mind-eye opens, and one roughly sees the pure dependent and direct retributions of that land with all manner of adornments, dispelling obscurity."[^56] "False → true" is not a downgrade but cognitive preparation. (c) **Composite-thought as "great-object / small-mind" retreat.** The thirteenth composite-thought contemplation shrinks the contemplation-object from the true body back to "an image of sixteen *chǐ* or eight *chǐ*" — Shandao explicitly states: "Because when the object is great and the mind small, accomplishment comes hard, the sagely intention, moved by compassion, exhorts contemplation of the small."[^57] Composite-thought is a *retreat* placed for those who, after completing contemplations 7–12, cannot sustain true-body contemplation — not the terminus of the architecture, but its internal **safety net**. **Third layer (dependent-fruit → direct retribution → rebirth).** The three-segment *progression* reflects a *telos*-shift in the design of salvation — from **where** (where is the Pure Land) to **whom** (whom shall one see) to **how-to-enter** (what sort of person enters how). The first two segments establish the *object* (the land, the Buddha-body); the third segment turns to *subject individuation* (sentient beings divided into nine kinds). This is the pivot from object-description to access-engineering. The structural meaning of **Zhiyi's "differentiated-expedient" designation**: the sixteen contemplations exist as sixteen steps rather than as a single direct contemplation precisely because the "feeble thought-mind" of ordinary beings needs step-by-step cognitive scaffolding — sun-contemplation as faith-establishment (dispelling doubt), water-contemplation as imagination-exercise (borrowed similar object), ground-contemplation as actual-object vision, jewel-tree and pond and comprehensive contemplations as scene-completion, lotus-throne as interface transition, image-contemplation as Buddha-body preparation, true-body contemplation as the accomplished principal image, Avalokiteśvara and Mahāsthāmaprāpta as extension of the Buddha-body system, universal contemplation as the entrance of the subject, composite-thought as capacity-retreat. Each contemplation is the forge for the next. ### 3.3 The Floor and the Nine-Grade Differentiation: The Architectural Position of Lower-Grade Lower-Birth Contemplations 14, 15, 16 — upper class, middle class, lower class — constitute the nine grades of rebirth. Shandao's T1753 reads them through a "three-types-of-encountered-condition × three-vertical-levels" structure: upper three = ordinary beings encountering the Mahā(yāna); middle three = ordinary beings encountering the *Hīna(yāna)*; lower three = ordinary beings encountering (good friend in an) evil-world.[^58] But the nine-grade structure within T0365's own text is more finely articulated — it operates by **four-variable permutation**: | Variable | Range of variation | |---|---| | **Practice-capital** | three-minds complete + *Mahāyāna* recitation/understanding → upholding the five and eight precepts / eightfold abstention → filial piety, worldly benevolence → five heinous + ten evil deeds | | **Reception-ceremony** | diamond throne → purple-gold throne → golden lotus → golden light → jewel lotus → Avalokiteśvara and Mahāsthāmaprāpta → golden lotus | | **Lotus-opening duration** | the time of a finger-snap → one day and night → seven days → half a *kalpa* → one small *kalpa* → three small *kalpas* → forty-nine days → six *kalpas* → **twelve great *kalpas*** | | **Attainment-rung** | non-arising patience (upper-upper) → one small *kalpa* non-arising patience (upper-middle) → three small *kalpas* to Joyful Ground (upper-lower) → *arhat* (middle-upper) → *srotāpanna* → half *kalpa* to *arhat* (middle-middle) → *srotāpanna* → one small *kalpa* to *arhat* (middle-lower) → ten small *kalpas* to First Ground (lower-upper) → six *kalpas* arousing the unsurpassed way-mind (lower-middle) → twelve great *kalpas* arousing *bodhicitta* (lower-lower) | The nine grades are not a *redundant* table of "upper-middle-lower three classes repeated three times"; they are a permutation of four independently varying variables — each grade's distinctive character lies in its unique parameters along practice-capital (entry-threshold), reception-ceremony (ceremonial stratum), lotus-opening duration (attainment-delay), and attainment-rung (exit-attainment). The upper class has the *bodhisattva*-fruit (non-arising patience / non-retrogression / Joyful Ground) as its terminus; the middle class has the *śrāvaka*-fruit (*arhatship*) as its terminus; the lower class has arousal of *bodhicitta* / entry into First Ground as its terminus — **difference of vehicle** is itself a major structural axis of the nine grades. §V's misreading three will treat this point *explicitly*. **The structural meaning of lower-grade lower-birth as architectural floor** is the key of §3.3: > "Or there are sentient beings who commit unwholesome acts — the five heinous deeds, the ten evil deeds, all manner of unwholesome things. … Pressed by suffering, such a person has no leisure to be mindful of the Buddha. A good friend tells him: 'If you cannot be mindful of that Buddha, you should call out in refuge to Amitāyus Buddha.' With sincere mind and sound unbroken, accomplishing ten recollections, reciting *Namo Amitābha Buddha*. Because of reciting the Buddha's name, in thought after thought the sins of eighty *koṭi* eons of birth-and-death are removed."[^59] Three observations are worth marking out. **First, this is the architecture's lowest threshold** — for those who have committed the five heinous and ten evil deeds, for those who under pressure of sickness cannot be mindful of the Buddha, for those who "cannot be mindful of that Buddha" (who cannot even perform visualization), a channel remains open. The channel's condition is reduced to "accomplishing the ten recollections, reciting the name" — from the high-end *dhyāna*-contemplation of the sixteen contemplations all the way down to pure vocal action. This is the design-floor of the architecture. **Second, this floor is structurally isomorphic with the floor-not-pinnacle position of vow 18 argued in P09.** P09 argued that the "even-ten-recollections" of vow 18 occupies in the forty-eight-vow system the position of **entry-threshold, not pinnacle**, allowing the other forty-seven vows to have sentient beings to save. P10 answers in kind: the "accomplishing the ten recollections, reciting the name" of lower-grade lower-birth occupies in the sixteen-contemplation system the position of **entry-threshold, not pinnacle**, allowing the other fifteen contemplations to have beings to serve.[^60] The design-signature of the two architectures is identical: lowest threshold coupled with maximum reception, placed at the system edge as load-bearing node. Shandao's T1753 fourth article on dispersed-good division — "If one relied on meditative practice alone, the rescue of sentient beings would be incomplete; therefore the Tathāgata, through expedient means, opens the three meritorious acts to accommodate capacities of the dispersed-prone" — states the same design-logic: meditative good does all it can; dispersed good supplements what it cannot.[^61] The "floor-design" dual-echo of Part IV is established here. **Third, name-invocation is not a sudden "turn" in T0365** — it has been present since T0643's chapter "On the Marks" in the passage where the white-curl light rescues Avīci hell: > "The sinners, pausing for an instant, arise, join palms with crossed hands, face the mark of the white curl, and in that very moment their minds open. … All at once together they cry: '*Namo Buddha*!'"[^62] This is the **earliest "name-invocation as liberation-mechanism"** narrative within the Chinese-translation buddha-contemplation *samādhi* context — ten to twenty years before T0365. T0365's lower-grade lower-birth does not suddenly cut out "name-invocation" as a new independent entity — the *action* of name-invocation was already latent in T0643's buddha-contemplation tradition; T0365's original act is to **extract this latent action and elevate it to an independent floor-access channel**, encoding its floor-character through textual position at the architecture's sixteenth and final contemplation. This matter underpins §V's misreading three, and sets a buried thread for P11 (T0366's minimal-compression architecture of *holding the name*). --- ## IV. The Commentarial Perspective: Zhiyi's Reading of the Sixteen Contemplations §IV of this paper does not pursue the "cross-disciplinary dialogue" in the Western-theoretical direction (cognitive imagery studies, phenomenology of image-consciousness, art history). P06 through P09 have run four consecutive papers with Western interlocutors in §IV, all four requiring English-drift remediation. P10 turns back to an **intra-Buddhist commentarial perspective** — taking Zhiyi, as the first systematic commentator on T0365, to display how the internal commentarial tradition reads this architecture. This choice sidesteps the landmine of Western-terminology translation, and also forms an internal rhythm within Part IV alongside P09's Western-theoretical path: P09 uses contemporary design theory as *heuristic*; P10 uses a seventh-century commentator as *heuristic* — each has its own leverage. Zhiyi's five-fold profound meaning in T1750 (explication of name / discernment of essence / clarification of tenet / discussion of function / judgment of teaching-type) provides the complete meta-architecture for T0365.[^63] Four of its items bear most directly on this paper's main thesis. **First, "mind-contemplation as tenet, reality-as-such as essence" as architectural designation.**[^64] The sixteen contemplations are not sixteen epistemic operations but the sixteen-step expression of a single mind-contemplation operation; the essence is not the contemplation-practice itself but the reality toward which the practice points — namely, "the unconditioned Dharma-body of true wisdom" (*term* borrowed from Vasubandhu's *Upadeśa on the Sūtra of Immeasurable Life*, T1524; P09 has already treated it).[^65] Zhiyi designates T0365 as "a *Mahāyāna* sūtra with reality-as-such as its seal" — within the sequence-ranking of *Mahāyāna* sūtras the sūtra belongs to the sudden teaching, not the gradual: "not entering from the gradual, it is subsumed under the sudden teaching."[^66] **Second, three-fold segmentation (6+7+3) as architectural skeleton.** Zhiyi provides the three-fold division of the sixteen contemplations (cited already in §2.5);[^67] this division is the direct commentarial basis for §3.2's three-axis geometry. Zhiyi's reading of "dependent fruit → direct retribution → rebirth" is structurally equivalent to this paper's "outer → inner → grade-of-rebirth" reading. **Third, four kinds of Pure Land as metaphysical coordinate-system.**[^68] The Land of Common Residence of Ordinary and Sages (the Land of Bliss is here, as upper-grade Pure Land) / the Land of Expedient Remainder (where the two-vehicle *arhat*s dwell) / the Land of True Recompense without Obstruction (*bodhisattva* dharma-nature land) / the Land of Eternal Quiescent Light (the Buddha's self-enjoyment land) — the four Pure Lands are not a spatial stacking but an *ontological* sequence. The sixteen contemplations conduct the practitioner from the common-residence entry-point, but subsequent progression paths (expedient-remainder, true-recompense without obstruction, eternal-quiescent light) unfold beyond the sixteen-contemplation architecture. The *scope* of the sixteen contemplations is *access* to the Land of Bliss (the upper-grade common residence), not the complete *ontological* ascent. **Fourth, "differentiated-expedient" designation and the image → true-body propaedeutic** (cited already in §3.2).[^69] Zhiyi explicitly identifies the sixteen contemplations as "an expedient gate" — because Vaidehī's "thought-mind was feeble," a ladder was needed, not direct-contemplation. This designation *positions* the sixteen contemplations as a *scaffolded learning program*, not a *direct realization technique*. Zhiyi's exegesis of "this mind makes the Buddha; this mind is the Buddha" then gathers the entire sixteen-contemplation architecture up into the ontology of Tiantai's one-mind-three-contemplations: > "'This mind makes the Buddha': the Buddha is originally non-existent, and by virtue of the mind's purity becomes existent. … 'This mind is the Buddha': outside the mind there is no Buddha, nor any cause of Buddha. **At the start of learning, it is named 'making'; when finally accomplished, it is precisely 'is'** — *Buddha*."[^70] "At the start, 'making'; at the end, 'is'": "making the Buddha" is the phenomenal-aspect (practice), "being the Buddha" is the principle-essence (nature). The sixteen contemplations, as practice, have as their *telos* the manifestation of the principle-essence. This is Zhiyi's highest-layer ontological absorption of T0365. One historical fact is worth noting in passing. T1750's entire commentary makes no citation of the four *samādhi*s of T1911; T1911's full text makes no citation of T0365's sixteen contemplations — **Zhiyi himself did not lock these two architectures together**.[^71] Constant-walking *samādhi* is unfolded according to the *Pratyutpanna-samādhi Sūtra* (T0418); what is recollected is "the thirty-two marks of Amitābha Buddha — starting from the thousand-spoked-wheel mark on the soles of the feet, with each mark recollected in reverse order, up to the unseen-crown mark; and one should also go forward from the crown, down to the thousand-spoked-wheel mark."[^72] This forward-and-reverse relational recollection is derived from T0643's contemplation-tradition, and belongs to a **different topology** from T0365's linear sixteen-contemplation sequence. The work of locking *contemplation / invocation / rebirth* into a unified Pure Land practice-gate was completed only after Zhiyi by Shandao, Genshin, and Hōnen (P22/P23 main scenes; not unfolded here). This "not-yet-locked" condition is itself a doctrinal-history marker: the systematization of architectures is diachronic, not instantaneous. --- ## V. Middle-Way Correction ### ❌ Misreading 1: "Zhiyi's Four Kinds of Buddha-Recollection" as the *Commentary*'s Original Terminology A popular formulation — which includes part of the modern scholarly literature and the oral teaching tradition of Chinese Pure Land circles — runs: "Zhiyi's four kinds of buddha-recollection: name-invocation, image-contemplation, thought-contemplation, reality-as-such." Direct checking against CBETA XML[^73] shows the following: - T1750 *Commentary on the Sūtra on the Contemplation of Amitāyus* (Zhiyi) records, in its own words, a **three-fold buddha-recollection**: "recollection of the form-body, recollection of the dharma-gates, recollection of reality-as-such."[^74] - T1962 *Five Expedient Gates of Buddha-Recollection* (attributed to Zhiyi) lists **five gates**: name-invocation for rebirth / image-contemplation for sin-extinguishment / all objects as mind-only / mind and object mutually transcended / nature-arising perfect-penetration.[^75] - T1911 *Mahāyāna Calming-and-Contemplation* (Zhiyi, recorded by Guanding) lists **four kinds of *samādhi*** (not four kinds of buddha-recollection): constant-sitting / constant-walking / half-walking-half-sitting / neither-walking-nor-sitting.[^76] The four-fold "name-invocation / image-contemplation / thought-contemplation / reality-as-such" **does not appear anywhere in T1750** or in T1911. This four-fold division is a later (at latest, the Tang-Song transition) **simplified re-editing** of T1962's five-gate architecture — compressing gates three (all objects as mind-only) and four (mind and object mutually transcended) into "reality-as-such," and splitting "image-contemplation for sin-extinguishment" into "image-contemplation" and "thought-contemplation." Once crystallized, it circulated under the name "Zhiyi's four kinds of buddha-recollection," but this name is **not a term used by Zhiyi himself**. When P10 needs to cite such classifications, one should use Zhiyi's original T1750 terminology of "three-fold buddha-recollection (recollection of form-body / dharma-gates / reality-as-such)," or state explicitly that one is citing "a later simplified re-editing of T1962's five expedient gates of buddha-recollection." One should not retroactively attribute this four-fold division to Zhiyi himself. This philological clearing leaves clean ground for P22 (Shandao) and P23 (Zhiyi's buddha-recollection classification), and avoids extending the conflation into Part VI. ### ❌ Misreading 2: The Sixteen Contemplations as a Collection of *Dhyāna* Techniques Western Pure Land studies sometimes read the sixteen contemplations as "sixteen kinds of visualization technique," implying a toolbox of detachable, independently usable contemplation tools. This reading obscures the architecture. **Correction.** The sixteen contemplations are a *designed sequence*, not a *technique bundle*. The three-fold segmentation (Zhiyi), the meditative-good / dispersed-good division (Shandao), the propaedeutic ladder (the T1750 gold quote), the transition warrants (borrowed similar object / false for entering the true / great-object-small-mind), and the architectural closure (nine-grade differentiation + the lower-grade lower-birth floor) — any one of these points alone directs toward structurality rather than toward a technique-collection. The key difference between T0365 and T0643 lies exactly here: T0643 is a *technique menu* (decomposable, selectable, independently deepenable); T0365 is a *sequence path* (with a beginning, an end, and internal rungs). To read T0365 as a *menu* is to read a route-map back into a menu — erasing T0365's original architectural act. ### ❌ Misreading 3: The Nine Grades as a "Tripled Version of the Three Classes" To read the three births of the upper class, the three of the middle class, and the three of the lower class as "upper-middle-lower three classes each subdivided into three" — a redundant taxonomy — is perhaps the most widespread misreading of the nine grades. **Correction.** The nine grades are the independent permutation of four variables (practice-capital × reception-ceremony × lotus-opening duration × attainment-rung) — *non-redundant*. The upper class takes the *bodhisattva*-fruit (non-arising patience / non-retrogression / Joyful Ground) as terminus; the middle class takes the *śrāvaka*-fruit (*arhatship*) as terminus; the lower class takes arousal of *bodhicitta* / entry to First Ground as terminus — **difference of vehicle** itself is a major structural axis of the nine grades. Duration ranges from "the time of a finger-snap to realization" to "twelve great *kalpas* of lotus-closure" — a nine-level gradient; this is the **second** structural axis, difference of duration. Reception-ceremonies step down from diamond throne to golden lotus — a **third** axis, difference of ceremonial stratum. Practice-capital spans from "three-minds complete" to "five heinous and ten evil" — vast; this is the **fourth** axis, difference of entry-threshold. The four axes are mutually independent; every one of the nine grades is a distinctive point in this four-axis coordinate-system, not a cell in a "three-levels-of-quality × three-levels-of-degree" linear table. Shandao's T1753 "three types of encountered condition" (encountering the Mahā, the *Hīna*, the evil) further reads upper-middle-lower three classes as **differences of capacity** rather than **differences of position** — this reading breaks the "three classes = sagely ladder" misunderstanding, restoring the nine grades as a lateral fan-out of end-time ordinary beings following the teaching-condition they encounter.[^77] --- ## VI. Conclusion ### 6.1 Summary The sixteen contemplations are a designed cognitive-visual architecture — the visualization methodology is inherited from T0643 (the image-contemplation protocol, the thirty-two-marks-and-eighty-minor-characteristics framework, the light-ray imagery, the buddha-contemplation *samādhi* terminology), but the linear sixteen-step ordinal sequence is T0365's original architectural act. The ordering logic is a three-axis geometry of "outer → inner → grade-of-rebirth"; its critical propaedeutic drive is "false for entering the true"; and the nine grades of rebirth close the architecture as differentiation-entrance. The lower-grade lower-birth's ten-recollection name-invocation is the architectural floor, structurally isomorphic with P09's floor-not-pinnacle position of vow 18; together they form the meta-thesis of Part IV — **the Three Pure Land Sūtras present their soteriology through a dual architecture of "vow-layer + contemplation-layer," and both layers place "lowest threshold coupled with maximum reception" at the system edge as load-bearing node**. ### 6.2 Practical Guidance This architecture has two *concrete implications* for the practitioner. *First*, **one need not run through all sixteen contemplations in a single sitting**. Zhiyi's T1750 designation of "differentiated expedient" makes the point already: the sixteen contemplations are a ladder established for the ordinary being whose "thought-mind is feeble," and each contemplation has its own verification-sign ("the sun about to set, shaped like a suspended drum"; "the ground of that land clear and unobstructed"; "the body-marks and radiance of Amitāyus Buddha"; and so on). One may dwell at any rung. The design-intention of sun-contemplation as the first contemplation is precisely as an entry-point **any non-blind person can operate** — the lowest training-ground of faith and concentration. No practitioner need demand of themselves that they leap from sun-contemplation directly into lower-grade lower-birth. *Second*, **the floor-structure implies that *access* is not determined by a single dimension of practice-depth**. The ten-recollection name-invocation channel established for those who have committed the five heinous and ten evil deeds is not a "consolation prize for inferior practitioners." It is a salvific promise *encoded* by the architecture itself — the architectural declaration "those born in the West are of nine grades" directly excludes the misunderstanding that "only upper-grade practitioners can be reborn." For readers who feel uncertainty about their practice-state, the message *encoded* by this architecture is: **this design, from the start, has considered you**. ### 6.3 Open Question This paper closes with the architectural analysis of T0365. But T0366 *Shorter Sukhāvatīvyūha Sūtra* (the main scene of P11) compresses the sixteen-step route into a single phrase: "hearing the name of Amitābha Buddha, holding the name … for one day, for two days, … for seven days, with one-pointed undisturbed mind." From sixteen steps to one phrase, from the sixteen contemplations to the holding of the name — is this **further convergence** of the architecture (toward the extreme-minimal, a single action substituting for a ladder)? Or a **different architecture** (ten-recollection name-invocation as an independent path, not a compressed version of the sixteen-contemplation route-map)? The question is not answered within P10's scope. The convergence-differentiation logic of the Three Pure Land Sūtras' architectures is taken up in P11. *Namo tassa bhagavato arahato sammāsambuddhassa.* --- ## Notes [^1]: See the closing paragraph of §I and §VI of P09, *The Forty-Eight Vows: Dharmākara's Vow-System as a Designed Architecture*. [^2]: Shandao, *Commentary on the Sūtra on the Contemplation of Amitāyus* (T1753), fascicle 1, Taishō vol. 37; Zhiyi, *Commentary on the Sūtra on the Contemplation of Amitāyus* (T1750), Taishō vol. 37, 0191c07–14. [^3]: Buddhabhadra, trans., *Sūtra on the Ocean-Samādhi of Buddha-Contemplation* (T0643), Taishō vol. 15. Twelve-chapter thematic structure; within each chapter, parallel "some sentient beings delight in contemplating X" lists; no "first contemplation, second contemplation" ordinal. [^4]: T1750, 0193a17–19: "Therefore in contemplating the Buddha, one first makes the image-thought, and afterwards contemplates the Dharma-body. … Because the Dharma-body in its ultimate subtlety cannot be contemplated in a single leap, one first practices image-thought until fluent; afterwards the contemplation of the Dharma-body becomes easy" (translation mine). [^5]: Kālayaśas, trans., *Sūtra on the Contemplation of Amitāyus Buddha* (T0365), Taishō vol. 12, fascicle 1, prologue (translation mine). [^6]: T0365, fascicle 1, Vaidehī's request passage (translation mine). [^7]: T0365, fascicle 1, three-meritorious-acts passage. [^8]: T0365, first sun-contemplation ignition sentence (translation mine). [^9]: T0365, first sun-contemplation verbatim (translation mine). [^10]: T0365, sixth comprehensive contemplation (translation mine). [^11]: T0365, seventh lotus-throne contemplation (translation mine). [^12]: T0365, eighth image-contemplation (translation mine). [^13]: T0365, ninth true-body contemplation (translation mine). [^14]: T0365, sixteenth lower-grade lower-birth (translation mine). [^15]: The four structural-markers within the sūtra's text occur at the positions cited above, all drawn from fascicle one; "this mind makes the Buddha; this mind is the Buddha" is located in the eighth image-contemplation passage. [^16]: T0365, circulation-portion dual-title passage. [^17]: T0365, circulation-portion "holding the words is holding the name" passage. [^18]: Translation-history dating follows *Chū sānzàng jì jí* (*Collection of Records Concerning the Translation of the Tripiṭaka*) and the Taishō translator-attributions: Buddhabhadra's translation activity was concentrated in the 410s–420s at Jiangnan, contemporaneous with Faxian; Kālayaśas's translation period is approximately 424–442 CE at Jiankang (Liu-Song Yuanjia era). [^19]: T0643, fascicle 1, "Six Similes" chapter (*liù pì pǐn* 六譬品), T15.645c24–646a01 (translation mine). [^20]: T0643, fascicle 1, "Six Similes" chapter, T15.646a15–20 (translation mine). [^21]: T0643, fascicle 9, "Observing the Image" chapter (*guān xiàng pǐn* 觀像品), T15.690c01–28. [^22]: T0643, fascicle 1, "Observing the Ground" chapter (*xù guān dì pǐn* 序觀地品), "some sentient beings delight in contemplating …" enumeration, T15.647c09–26. [^23]: T0643, fascicle 10, "Observing the Buddha's Secret Practice" chapter (*guān fó mìxíng pǐn* 觀佛密行品), T15.696b22–29 (translation mine). [^24]: Dharmamitra, trans., *Sūtra on the Practice Method of Contemplating Samantabhadra Bodhisattva* (T0277), Taishō vol. 9; colophon: "translated at Yangzhou during the Yuanjia years of the Song by Dharmamitra." Dharmamitra died in the nineteenth year of Yuanjia (442 CE); translation-period approximately 424–442 CE. [^25]: Right-contemplation / wrong-contemplation verdict-formula: at the end of each of T0365's sixteen contemplations, and at the end of T0277's Samantabhadra-elephant contemplation. The two formulations are structurally and lexically identical. [^26]: Shandao, *Commentary on the Sūtra on the Contemplation of Amitāyus*, four fascicles (T1753), Taishō vol. 37. [^27]: T1753, fascicle 1, "Profound Meaning" section, fifth gate, "Discriminating the Meditative and Dispersed Two Gates" (translation mine). [^28]: Same as above. [^29]: T1753, fascicle 1, "Thinking / Right-Reception" interpretation passage (translation mine). [^30]: T1753, fascicle 1, refutation-of-other-masters' old-divisions passage. [^31]: T1753, fascicle 2, "Dispersed-Good Practice-Manifestation Condition" (*sàn-shàn xiǎn-xíng-yuán* 散善顯行緣) section (translation mine). [^32]: T1753, fascicle 1, seven-gate profound-meaning overall outline. [^33]: T1753, fascicle 4, upper-middle-lower three-class eleven-gate comparative framework. [^34]: T1753, fascicle 1, sixth gate, passage refuting the other masters' assignment of the nine grades to sagely ranks (translation mine). [^35]: T1750, 0186c18. [^36]: T1750, 0186c13–17 (translation mine). [^37]: T1750, 0191c07–14 (translation mine). [^38]: T1750, 0191b28–29. [^39]: T1750, 0192a03–06 (translation mine). [^40]: T1750, 0193a17–21 (translation mine). [^41]: T1750, 0188b15–0188c08. [^42]: T1750, 0188c18–19. [^43]: T1911, 0011a21–28. [^44]: T1911, fascicle 2, constant-walking-*samādhi* section, 0012a19–0013a23. [^45]: T1911 full-text grep yields no hits for "sixteen contemplations" or "*guān wúliàngshòu*"; T1750 full commentary cites no four *samādhi*s. Direct CBETA XML grep. [^46]: T0643, fascicle 10, "Observing the Buddha's Secret Practice" chapter, T15.696b22–29 (same as [^23]). [^47]: T0365 ninth true-body contemplation; cf. T0643 fascicle 1, "Observing the Ground" chapter, thirty-two-marks-and-eighty-minor-characteristics definition passage. [^48]: T0643 fascicle 2, "On the Marks, Part 2" chapter, "white-curl light descending to correspond with Avīci hell" passage, T15.650c29–652a16; T0365 ninth true-body contemplation, "each ray illumines the ten-direction worlds, gathering in and never abandoning the sentient beings who are mindful of the Buddha." [^49]: T0643, fascicle 9, "Observing the Image" chapter, T15.690c01–28 (same as [^21]). [^50]: T0643, fascicle 1, "Observing the Ground" chapter, parallel enumeration (same as [^22]). [^51]: T0365, prologue, Vaidehī's self-confession. [^52]: T1750, 0191c07–14 (same as [^37]). [^53]: T1753, fascicle 3, closing summary; "From the sun-contemplation down through the composite-thought contemplation, the whole clarifies the World-Honored One's answer to Vaidehī's fourth request, the two phrases 'teach me to think upon it, to receive it rightly'" — with dependent-retribution / direct-retribution segmentation. [^54]: T1750, 0193a17–19 (same as [^4]). [^55]: T1753, fascicle 3, water-contemplation passage (translation mine). [^56]: T1753, fascicle 1, terminology section (false direct retribution / true direct retribution separate exegesis) (translation mine). [^57]: T1753, fascicle 3, composite-thought-contemplation passage (translation mine). [^58]: T1753, fascicle 1, sixth-gate closing (same as [^34]). [^59]: T0365, sixteenth lower-grade lower-birth *verbatim* (translation mine). [^60]: P09, *The Forty-Eight Vows: Dharmākara's Vow-System as a Designed Architecture*, §3.4 argument on "The Position of Vow 18 in the System." [^61]: T1753, fascicle 2, "Dispersed-Good Practice-Manifestation Condition" (same as [^31]). [^62]: T0643, fascicle 2, "On the Marks, Part 2" chapter, white-curl-light-saving-Avīci-hell passage, T15.650c29–652a16 (translation mine). [^63]: T1750, 0186c18 (same as [^35]). [^64]: T1750, 0186c13–17 (same as [^36]). [^65]: Vasubandhu, *Upadeśa on the Sūtra of Immeasurable Life* (T1524), Taishō vol. 26; cf. P09 §2.4. [^66]: T1750, 0188c13–21. [^67]: T1750, 0191c07–14 (same as [^37]). [^68]: T1750, 0188b15–0188c08 (same as [^41]). [^69]: T1750, 0191b28–29 (same as [^38]); T1750, 0193a17–21 (same as [^40]). [^70]: T1750, 0192b10–18 (translation mine). [^71]: Mutual non-citation of T1750 and T1911: direct CBETA XML grep result (same as [^45]). [^72]: T1911, 0012b24–29 (constant-walking-*samādhi* "recollecting the thirty-two marks in reverse and forward relation" passage) (translation mine). [^73]: Direct CBETA XML P5 grep result: none of T1750, T1911, or T1962 contains the term "four kinds of buddha-recollection." [^74]: T1750, 0187a24–27: "Recollecting one Buddha is equivalent to recollecting the Buddhas of the ten directions. … Recollecting the form-body, recollecting the dharma-gates, recollecting reality-as-such — the mindfulness ever running, there is no moment unminded; every thought, every thought, is awakening. This is named 'the contemplation-practice Buddha'" (translation mine). [^75]: T47n1962 *Five Expedient Gates of Buddha-Recollection* (attributed to Zhiyi), 0082a09–12: "The five gates of buddha-recollection expounded: first, the *samādhi*-gate of name-invocation for rebirth; second, the *samādhi*-gate of image-contemplation for sin-extinguishment; third, the *samādhi*-gate of all objects as mind-only; fourth, the *samādhi*-gate of mind and object mutually transcended; fifth, the *samādhi*-gate of nature-arising perfect-penetration" (translation mine). [^76]: T1911, 0011a21–28 (same as [^43]). [^77]: T1753, fascicle 1, sixth gate, closing passage "the upper three persons … are ordinary beings who encounter the Mahā(yāna) …" (same as [^34]). --- ## References ### I. Primary Buddhist Sources **Chinese Translations (Taishō Tripiṭaka)** - *Sūtra on the Contemplation of Amitāyus Buddha* (*Guān wúliàng shòu fó jīng* 觀無量壽佛經), translated by Kālayaśas of the Liu-Song. Taishō vol. 12, no. 365. **Primary source** of this paper (the sixteen contemplations). - *Sūtra on the Ocean-Samādhi of Buddha-Contemplation* (*Guān fó sānmèi hǎi jīng* 觀佛三昧海經), translated by Buddhabhadra of the Eastern Jin. Taishō vol. 15, no. 643. **Primary source** of this paper (direct upstream of T0365). - *Sūtra on the Practice Method of Contemplating Samantabhadra Bodhisattva* (*Guān Pǔxián púsà xíngfǎ jīng* 觀普賢菩薩行法經), translated by Dharmamitra of the Liu-Song. Taishō vol. 9, no. 277. **Primary source** of this paper (contemporary parallel). - *Commentary on the Sūtra on the Contemplation of Amitāyus* (*Guān jīng sì-tiē shū* 觀經四帖疏), compiled by Shandao of the Tang, four fascicles. Taishō vol. 37, no. 1753. **Primary source** of this paper (structural tools). - *Commentary on the Sūtra on the Contemplation of Amitāyus* (*Guān wúliàng shòu fó jīng shū* 觀無量壽佛經疏), spoken by Zhiyi. Taishō vol. 37, no. 1750. **Primary source** of this paper (intra-Buddhist commentarial lens). - *Mahāyāna Calming-and-Contemplation* (*Móhē zhǐguān* 摩訶止觀), spoken by Zhiyi, recorded by Guanding. Taishō vol. 46, no. 1911. **Primary source** of this paper (four *samādhi*s). - *Five Expedient Gates of Buddha-Recollection* (*Wǔ fāngbiàn niànfó mén* 五方便念佛門), attributed to Zhiyi. Taishō vol. 47, no. 1962. Cited in §V for philological clarification. - *Sūtra of Immeasurable Life* (*Wúliàngshòu jīng* 無量壽經), traditionally attributed to Saṅghavarman. Taishō vol. 12, no. 360. Primary source of P09; background citation in §I and §VI of this paper. - *Shorter Sukhāvatīvyūha Sūtra* (*Ā-mí-tuó jīng* 阿彌陀經), translated by Kumārajīva of the Later Qin. Taishō vol. 12, no. 366. Primary source of P11; previewed in §VI. - *Pratyutpanna-samādhi Sūtra* (*Bān-zhōu sān-mèi jīng* 般舟三昧經), translated by Lokakṣema of the Later Han. Taishō vol. 13, no. 418. Primary source of P06; background citation in §2.5 and §IV. - *Upadeśa on the Sūtra of Immeasurable Life* (*Wúliàngshòu jīng yōu-pó-tí-shè* 無量壽經優波提舍), composed by Vasubandhu, translated by Bodhiruci. Taishō vol. 26, no. 1524. Primary source of P09; background citation in §IV. ### II. Patriarchal Commentaries 1. Shandao (善導, 613–681). *Guān-jīng sì-tiē shū* 觀經四帖疏 (*Commentary on the Sūtra on the Contemplation of Amitāyus*, Four-Fascicle Commentary), compiled by Shandao of the Tang, four fascicles. Taishō vol. 37, no. 1753. **Primary source** of this paper (structural tools). 2. Zhiyi (智顗, 538–597, spoken), Guanding (灌頂, 594–632, recorded). *Guān wúliàng shòu fó jīng shū* 觀無量壽佛經疏 (*Commentary on the Sūtra on the Contemplation of Amitāyus*), spoken by Zhiyi. Taishō vol. 37, no. 1750. **Primary source** of this paper (intra-Buddhist commentarial lens). 3. Zhiyi (智顗, 538–597, spoken), Guanding (灌頂, 594–632, recorded). *Móhē zhǐguān* 摩訶止觀 (*Mahāyāna Calming-and-Contemplation*), spoken by Zhiyi, recorded by Guanding. Taishō vol. 46, no. 1911. **Primary source** of this paper (four *samādhi*s). ### III. Modern Scholarship 1. Gómez, Luis O. *The Land of Bliss: The Paradise of the Buddha of Measureless Light*. Honolulu: University of Hawaiʻi Press, 1996. Key secondary reference for the doctrinal architecture of T0365's contemplative program and its relation to Pure Land ontology. 2. Tanaka, Kenneth K. *The Dawn of Chinese Pure Land Buddhist Doctrine: Ching-ying Hui-yüan's Commentary on the Visualization Sūtra*. Albany: SUNY Press, 1990. Background reference for the reception history of T0365-type contemplation in early Chinese Pure Land. ### IV. Sūtra & Śāstra Index | Abbr. | Full Title | Reference | Translator / Author | Date | |---|---|---|---|---| | T0360 | *Sūtra of Immeasurable Life* | Taishō vol. 12, no. 360 | traditionally attributed to Saṅghavarman | Liu-Song (attribution disputed) | | T0365 | *Sūtra on the Contemplation of Amitāyus* | Taishō vol. 12, no. 365 | Kālayaśas | Liu-Song Yuanjia, ca. 424–442 CE | | T0366 | *Shorter Sukhāvatīvyūha Sūtra* | Taishō vol. 12, no. 366 | Kumārajīva | Later Qin, 402 CE | | T0418 | *Pratyutpanna-samādhi Sūtra* | Taishō vol. 13, no. 418 | Lokakṣema | Later Han, 179 CE | | T0643 | *Sūtra on the Ocean-Samādhi of Buddha-Contemplation* | Taishō vol. 15, no. 643 | Buddhabhadra | Eastern Jin, ca. 418–422 CE | | T0277 | *Sūtra on the Practice Method of Contemplating Samantabhadra Bodhisattva* | Taishō vol. 9, no. 277 | Dharmamitra | Liu-Song Yuanjia, ca. 424–442 CE | | T1524 | *Upadeśa on the Sūtra of Immeasurable Life* | Taishō vol. 26, no. 1524 | Vasubandhu; tr. Bodhiruci | Northern Wei, sixth century | | T1750 | *Commentary on the Sūtra on the Contemplation of Amitāyus* | Taishō vol. 37, no. 1750 | Zhiyi | Sui | | T1753 | *Commentary on the Sūtra on the Contemplation of Amitāyus* (*Four-Fascicle Commentary*) | Taishō vol. 37, no. 1753 | Shandao | Early Tang | | T1911 | *Mahāyāna Calming-and-Contemplation* | Taishō vol. 46, no. 1911 | Zhiyi, rec. Guanding | Sui | | T1962 | *Five Expedient Gates of Buddha-Recollection* | Taishō vol. 47, no. 1962 | attributed to Zhiyi (authorship disputed) | crystallized between Sui and Tang | ### V. Cross-Reference to Series Papers | Referenced Paper | Invocation Point in Present Paper | Function | |---|---|---| | NIAN-P06 | §2.5, §IV | T0418 *pratyutpanna-samādhi* background; constant-walking *samādhi* lineage in T1911 | | NIAN-P07 | — | T0361 buddha-field ontology background (not directly invoked here) | | NIAN-P08 | §2.4 | Shandao's five right-practices; *niàn*-*chēng* verbal analysis | | NIAN-P09 | §I, §3.3, §VI | T0360's forty-eight-vow designed architecture; vow 18's floor-not-pinnacle position; Part IV dual-architecture meta-thesis | | NIAN-P11 | §I, §3.3, §VI | T0366's "holding the name" compression; the convergence-or-new-architecture question | | NIAN-P17 | §V | *Laṅkāvatāra* / *Ghanavyūha* full Yogācāra reading (not unfolded here) | | NIAN-P22 | §2.4, §IV, §V | Full development of Shandao's ordinary-being-into-recompense-land, two-kinds-of-deep-faith, right-determining-act, essential-and-extensive gate | | NIAN-P23 | §IV, §V | Tiantai's buddha-recollection classification and T1962's five-gate architecture | --- *CBETA collation: all T-number / X-number citations verified against the CBETA Electronic Tripiṭaka 2024 edition.* *Repo: github.com/pointing-at-the-moon/six-practice-gates · CC BY-NC-SA 4.0* *NIAN-P10 · 釋慧鏡 (Shi Huijing) · 2026-04-17*