Medicine, Logic, Linguistics, and the Practical Arts — The Ground of Hearing Complete

Master Cháng Bǎi confirms the eightfold path's now-familiar mapping onto the three higher trainings (precepts: right speech, action, livelihood; concentration: right mindfulness, right concentration; wisdom: right view, intention, diligence) — the same structure already met from a different angle at fascicle 14's item 3, restated here as the direct cause of a trainee's final severance of the five upper fetters and attainment of arhatship. The eight kinds of person he reads simply as the four fruits doubled: the path leading toward each fruit, and the fruit itself once attained — eight stages in all, from the very first steps toward stream-entry up through full arhatship.

He walks through the seven flawed forms of giving as a genuinely practical checklist of what corrupts an otherwise generous act: laziness (slow or half-hearted response to a genuine need); giving that fights one's own reluctance the whole way through, whether from fear of running short or from attachment to a prized possession; giving followed by regret, sometimes merely habitual giving inherited from family custom rather than genuine intention; giving that secretly expects future repayment; giving delivered with contempt, tossed at the recipient rather than offered with respect; giving motivated by hope of even greater wealth in return; and giving performed to be seen and praised. Flawless giving, by contrast, is giving genuinely dedicated to liberation itself, giving as a deliberate provision toward that same liberation, and — specifically for a bodhisattva — giving toward one's own future wealth and favorable rebirth not for personal enjoyment but precisely so as to have the resources to relieve others' material want before then teaching them the Dharma, since a mind consumed by basic need has no room left to actually hear a teaching. Cháng Bǎi treats the "three wheels empty" principle — no real giver, gift, or recipient ultimately found — as what genuinely purifies giving of all seven flaws at once, whether practiced by a śrāvaka seeking personal liberation or a bodhisattva seeking to benefit others.

Master Cháng Bǎi confirms the eight bases of mastery are the same eight already translated in fascicle 12, here regrouped into three: the first two (observing form, in fewer or greater number, still within one's own or another's body) and the second two (the same observation once inner form has been let go, observed only in others) both build on the first two liberations, while the final four (observing pure blue, yellow, red, and white light) build on the third liberation's purified light. What this section adds beyond fascicle 12's account is a precise five-part definition of "mastery" itself: mastery means the mind, not the object, now sets the terms (形奪卑下, the mind's own form dominating whatever inferior appearance the object presents); the mind's power subdues whatever weaker pull the object exerts (制伏羸劣); the mind can conceal the object at will, making it appear or vanish on command (能隱蔽他); the mind remains free of both craving and aversion no matter how vivid or repulsive the object becomes (厭壞所緣); and the mind can freely convert one into many or many into one, purity into impurity or impurity into purity (自在迴轉) — five distinct senses in which the practitioner, rather than the object, is now unmistakably in control.

He draws out one further point worth real attention: this same purifying observation of "small or great, pleasant or repulsive, inferior or superior" objects is not confined to formal sitting meditation at all — it applies equally to ordinary objects encountered in daily life, before any meditative absorption is even entered. Walking past a bakery, hearing a beautiful or discordant sound, meeting an attractive or unattractive stranger — all of it can become the same practice of observing without craving or aversion, calm's steady attention paired with insight's discerning investigation, exactly as within formal sitting. Cháng Bǎi treats this as the whole point the treatise wants understood: mastery achieved in meditation is meant to carry directly into ordinary experience, not remain sealed off within it — with this closing insight, "eight things," inner wisdom's eighth numeric category, comes to its end.

Master Cháng Bǎi notes the nine fetters (craving, hostility, conceit, ignorance, view, [wrong-rule] attachment, doubt, envy, and stinginess) simply cross-reference an already-familiar list rather than being newly explained here, and were already named in an earlier fascicle's account of what binds a mind to suffering.

He reads the nine abodes as completing the count already begun with the seven stations of consciousness explained in full at fascicle 14's §56: the same seven, expanded by two further special states that don't quite count as consciousness "settling in gratified" the way the seven proper do — beings without perception (whose six active consciousnesses are simply absent) and the peak of existence (whose mental activity is too subtle to classify as clearly present or absent) — bringing the total to nine. Only the evil destinies are excluded from the count entirely, since no being is ever described as gratified there, however long they may in fact reside. Between them, the nine abodes map every single location in the entire three-realm cosmos where any being's existence actually unfolds — the treatise's most complete geographical inventory of saṃsāra itself.

Master Cháng Bǎi confirms the ten totalities (earth, water, fire, wind, blue, yellow, red, white, space, and consciousness, each contemplated as pervading without limit or gap) as the final fruit of the same sequence already translated in fascicles 11–12: liberation first makes an object available to resolve, mastery then lets the mind control it at will, and totality finally extends that same mastered object without any boundary at all — three stages of the identical meditative material, deepening at each step. He notes the treatise itself defers further technical detail to the Compendium of Determinations, treating this brief mention here as sufficient closure rather than fresh exposition.

He reads the ten factors of one beyond training as the familiar eightfold path completed by two further factors unique to full arhatship: the eight path-factors sort into precepts (right speech, action, livelihood), concentration (right mindfulness, right concentration), and wisdom (right view, intention, diligence) — the same three-training structure met repeatedly throughout this numeric catalogue — while the ninth and tenth factors, right liberation and right knowledge, belong to no trainee, only to one who has finished training entirely. Right liberation is the settled confidence of having actually broken free of affliction; right knowledge is the arhat's own certainty — already met at fascicle 13's account of an arhat's two-part self-knowledge — that this freedom is both real and permanent. Cháng Bǎi notes that a buddha's own five aggregates rank highest among these, a pratyekabuddha's in the middle, and a śrāvaka's lowest, not because the aggregates themselves differ in kind but because the depth of realization behind them differs.

With the ten totalities and the ten factors of one beyond training named, the treatise's own closing line makes the milestone explicit: everything covered since section 43 of fascicle 13 — the threefold textual division, the four-verse concept catalogue running from "word" through "the sacred teaching," the ten principles comprehending the teaching's meaning, and this entire numeric catalogue climbing from one thing through ten — is comprehended within inner wisdom (內明處), the first of the five sciences named at the Ground of What Is Attained Through Hearing's very outset. Inner wisdom itself, spanning roughly three full fascicles of source material, is now complete.

Master Cháng Bǎi maps all four aspects onto the four noble truths without hesitation: recognizing an illness's symptoms is the truth of suffering; understanding what actually caused it is the truth of origination; eliminating an illness already present is the truth of cessation; and the ongoing means that keep it from recurring is the truth of the path — the same structure, he notes, citing the *Xiǎnyáng Shèngjiào Lùn*, that organizes every one of the treatise's four truths elsewhere. He reads this brief treatment as entirely deliberate: medicine here is offered as a worldly convenience, useful for sustaining the very body practice depends on, but the deeper point sits just beneath it — the body itself is inescapably subject to illness only because it is subject to birth at all, and birth traces back to ignorance; treating symptoms and even their proximate causes, however genuinely valuable, never reaches that root the way the Dharma's own four truths do. He adds a brief historical note that Indian medical learning — the physician Jīvaka renowned in the Buddha's own lifetime, later authors such as Nāgārjuna associated with medical treatises still preserved in the Tibetan canon, and the classical eightfold division of medical specialties (general ailments, ophthalmology, wound care, pediatrics, toxicology, and the rest) — traveled into China alongside Buddhism itself, leaving traces still visible in classical Chinese medical texts centuries later. With this brief treatment, the science of medicine is complete, and the treatise turns next to logic.

Master Cháng Bǎi glosses "examining a meaning" as the work of establishing a thesis — such as impermanence, non-self, or the peace of nirvāṇa — through the reasons and examples that support it; "all the matters" are everything that goes into that work of proof. He previews what each of the seven headings will cover: the nature of discourse sorts all debate into six basic kinds; the venue names where a debate should properly be held; the basis is the largest heading by far — the actual logical machinery of proof, built on valid reasons and examples grounded in direct perception, inference, and scriptural authority; the adornment covers the skills that let a debater grasp both his own position and his opponent's and present persuasively; defeat names the ways an argument fails; withdrawal asks whether a debate is even worth entering into; and the methods of greatest use describe the benefits — for oneself and others — that follow when the first six are done well.

He adds, as orientation rather than translation, that Indian logic developed in two broad phases: an older tradition and a "new logic" reorganized several centuries later around eight technical categories — valid and fallacious proof, valid and fallacious refutation, and the four combinations of direct perception and inference with their fallacious counterparts. This treatise reflects the older tradition; Cháng Bǎi treats the newer scheme only as background for readers who may encounter it in later commentarial literature, not as something the root text itself teaches here.

Master Cháng Bǎi reads "self-nature" as the plainest possible claim a thesis can make — that something exists or does not — and grounds it explicitly in the Yogācāra three-natures teaching already met in earlier fascicles: what is dependently arisen and what is perfectly realized are both posited as having being, while what is merely imagined and clung to is posited as having none. "Differentiation," the second kind, is everything else a thesis might claim about a thing once its bare existence is settled — permanent or impermanent, conditioned or unconditioned, and so on through an open-ended list the treatise explicitly declines to close, since any meaningful property a debater might wish to establish about something falls under this second heading. Together, he notes, the two kinds cover the entire space of what a philosophical claim can assert: that something is (or is not), and what it is like.

Master Cháng Bǎi glosses the three conditions plainly: the object must actually be present and directly cognized right now, not merely inferred (this rules out inference standing in for perception); the cognition must be this instant's bare contact, not a memory of a past object or an anticipation of a future one (this rules out thought and imagination masquerading as perception); and the cognizing sense faculty must not itself be disordered or deceived, whether by illness, drugs, or illusion (this rules out hallucination and trickery counting as perception). Together the three isolate perception's genuine core: an undistorted faculty, meeting a present object, with no intervening thought.

As background, he notes Dignāga's later, more technical fourfold division of what counts as direct perception — the five sense consciousnesses' bare first instant of contact; the accompanying sixth consciousness in that same instant, before naming and conceptualization begin; the mind's own reflexive awareness of its own cognition; and meditative consciousness, whether mundane concentration or the non-conceptual wisdom of the noble path. He treats this only as a later systematization useful for orientation — what follows here is the root text's own threefold framework, worked out condition by condition.

Master Cháng Bǎi treats the five sensory deceptions as a rogues' gallery of illusion familiar from everywhere in life: mistaking a shimmering mirage for actual water; a diseased eye seeing two moons where there is one; a spinning torch tracing a false ring of fire (deception of shape); jaundice or color-blindness painting everything the wrong hue (deception of color); and the seasick illusion of trees rushing backward past a moving vehicle (deception of function) — he adds the classic image of a fast-moving torch-tip appearing as a solid ring of flame for deception of shape specifically. The two "pervading" mental deceptions then compound any of the five: deception of mind is simply taking pleasure in an illusion once it has occurred, while deception of view is worse still — actively endorsing the illusion, telling others it is real, and clinging to it stubbornly even when shown otherwise. He notes the progression is deliberate: an honest mind that notices "that was just a mirage" has avoided deception of mind and view even though the initial sensory deception briefly occurred; real epistemic harm begins only once the false perception is embraced and defended.

On the closing fourfold summary, he shows how it maps directly back onto everything just covered: perception via the five physical senses and perception received by the mind (the two sub-cases of "not deliberated" from the previous section) together make up ordinary "worldly" direct perception, which is automatically also "pure" in the limited sense of being undistorted — but a further, higher pure direct perception exists that ordinary beings never touch: the non-conceptual wisdom of a noble one directly realizing the two truths, seeing existence and non-existence, the surpassable and the unsurpassed, exactly as they are. With this fourfold summary, the sixth means of proof — direct perception, the treatise's single longest topic — is now complete in full.

Master Cháng Bǎi walks through the six as a diagnostic sequence. First, inventing a self where there is none — every variety of "I," permanent or annihilated, embodied or formless, is a false addition to the five aggregates, which contain no such owner. Second, its mirror error: denying real distinctions that do exist, which he identifies specifically with the "nihilistic emptiness" some Mahāyāna students fall into — treating dependent origination and its causal texture as themselves illusory rather than as precisely how emptiness actually operates. He retells the well-known Chan story of the fox-spirit elder to make the point vivid: a teacher who once denied that a great practitioner still falls under cause and effect was reborn a fox for five hundred lives for that single wrong word, freed only when a later master corrected it to "not obscured by cause and effect" rather than "not subject to" it — the moral being that even a small doctrinal error about causality carries real weight.

Third, treating what the Buddha stated flatly (impermanence, suffering, non-self, as universal truths) as merely partial — and its opposite, treating what the Buddha deliberately left unanswered (whether the world is eternal, whether a Tathāgata exists after death, and the other classic fourteen unanswerable questions) as something requiring a definite answer after all; Cháng Bǎi notes the Buddha's silence on these was itself principled, not evasive, since answering would either encourage further false views or simply serve no purpose for liberation. Fourth, confusing what does and does not admit further differentiation — such as claiming conditioned and unconditioned phenomena are ultimately no different from each other — and getting causality backward, as claiming good conduct brings suffering and bad conduct brings happiness. Fifth, reversing purity and defilement by claiming wrong practice under a false teaching purifies while right practice under the true teaching defiles. Sixth, confusing the provisional and the ultimate — treating a merely conventional label as if it captured reality's true, ineffable nature, the classic error of mistaking the finger pointing at the moon for the moon itself.

With these six errors named and their reverses confirmed as the standard for "not contradicting the nature of things," scriptural authority — the eighth and final means of proof — is complete. This closes the entire basis of discourse (論所依), the third of the seven headings on logic and by far its largest, spanning both kinds of thesis and all eight means of establishing it. The treatise next turns to a closing question-and-answer clarifying how these pieces fit together, before moving to the fourth heading: the adornment of discourse.

Master Cháng Bǎi treats the opening question as the whole heading's real justification: things are exactly what they are, with or without anyone naming them — sound was impermanent long before any debater said so — so why bother positing a thesis and proving it at all? His answer, following the root text closely, is that language and proof exist entirely for the listener's sake, not for reality's: an opponent or student who has not yet seen a truth needs it demonstrated in terms they can verify for themselves, which is exactly why the treatise elsewhere cross-references the Bodhisattva Ground's teaching that ultimate reality is beyond language, and yet language remains indispensable as the raft that carries a listener to the point where they can finally see for themselves and no longer need the raft.

He then reads the ordering of the remaining questions as strict logical necessity, not mere convention: the thesis must come first because a debate needs a stated position before anything else is possible; the reason comes next because a bare thesis persuades no one without grounds; the example comes third because even a stated reason means nothing until it is anchored to some fact both sides already accept; and only once thesis, reason, and example are all on the table does it make sense to ask the deeper question — whether the reason and example actually support the thesis or merely restate it in disguise, which is exactly what the similar class, dissimilar class, and the three sources of valid knowledge exist to test. A reason is "in conflict" with its thesis, he explains, either when it is genuinely indeterminate — equally compatible with the thesis being true or false — or when it turns out to be nothing more than the thesis said again in different words, proving nothing new; a reason is "not in conflict" only when it is both determinate and genuinely independent of what it is meant to prove. Only reasons and examples that pass this test count as valid means of knowledge at all — everything else is merely apparent proof, persuasive in form but empty underneath.

With this closing question-and-answer, the basis of discourse (論所依) — the third of the seven headings on logic, covering both kinds of thesis and all eight means of establishing it, and by a wide margin the largest single topic in this fascicle — is now complete in full. The treatise turns next to the fourth heading: the adornment of discourse.

Master Cháng Bǎi reads mastery of both positions as a discipline of genuine intellectual honesty: a practitioner studies and practices their own tradition out of real conviction, but studies an opponent's position with equal rigor purely to understand it accurately — reading, reciting, and reflecting on it without ever practicing it — because only a debater who actually understands what the other side believes can identify where it goes wrong, rather than attacking a caricature. He notes this cuts against a natural temptation to dismiss an unfamiliar teaching without first learning it well enough to critique it fairly.

On speech's five virtues, he glosses each briefly: free of coarseness means avoiding crude regional slang; readily understood means using vocabulary the audience actually shares; vigorous and clear means language shaped skillfully enough to carry real persuasive force, not just correct content; coherent means the thesis, reason, and example stay logically connected from start to finish rather than drifting; and wholesome in meaning means the discourse actually leads a listener toward a better rebirth or, better still, toward liberation itself — rather than toward the distorted views of permanence, pleasure, self, and purity the treatise has repeatedly warned against. He adds that the treatise goes on to specify nine further marks of well-formed speech (freedom from disorder, from coarseness, clarity, proper measure, coherence with the meaning, correct timing, decisiveness, clarity, and continuity) which together produce these same five virtues — refined technique in service of genuinely persuasive, genuinely truthful communication, not eloquence for its own sake.

Master Cháng Bǎi maps fearlessness across the same six assemblies named earlier as fitting venues for debate — the crowd, the mixed human-and-celestial assembly, the royal court, the judges, the wise, and the learned — noting that genuine fearlessness always shows in three registers together: the mind (no inward dread), the body (no visible trembling), and speech (no stammering); a debater who is calm in mind but still shakes visibly, he notes, has not yet actually mastered fear. Dignified restraint he reads as simple patience — never interrupting, never rushing to speak before the moment is actually right. Being worthy of respect he connects to the classical five qualities required of anyone empowered to point out another's fault within the monastic community — speaking only at the right time, only about what is true, only for real benefit, only gently, and only from a mind of genuine goodwill — the same standard, he notes, that separates constructive correction from mere criticism.

On the twenty-seven virtues, he treats them as a single organic consequence of cultivating the five adornments together rather than twenty-seven separate achievements to pursue one by one — natural authority, trustworthiness, tireless composure, an unshakable memory for both one's own and an opponent's position, a voice that never tires even across a full day of debate, and ultimately a reputation earning the title "great master" (阿闍梨/ācārya-level renown). The closing simile — comparing these virtues to jewelry that makes an already handsome person radiant — makes the same point the entire heading has been building toward: none of these twenty-seven virtues is decoration bolted onto discourse from outside; they are what genuinely skillful, sincere discourse simply looks like from the outside, the way real splendor is not manufactured by jewels but only revealed by them. With this, the adornment of discourse — the fourth of the seven headings on logic — is complete, and the treatise turns to its darker mirror image: the fifth heading, discourse's defeat.

Master Cháng Bǎi groups the thirteen set phrases into six paired admissions plus a closing formula: unskillful versus skillful discourse, poor versus good observation of the logical relations at stake, lacking versus possessing principle, lacking versus possessing capacity in one's reason and example, and one's own position overcome versus the opponent's standing established — each pair naming exactly what failed, so that conceding defeat is itself an act of intellectual honesty rather than mere capitulation. The thirteenth and final formula, "let this matter rest, I will say no more," he treats as the classical, dignified way of ending a debate entirely rather than trailing off. He illustrates the spirit of it with a modern instance: the early-twentieth-century scholar Ouyang Jingwu, who debated Dharma-master Fazun repeatedly and reportedly told his own students near the end of his life that he had lost and the matter should be dropped — precisely the same graceful concession the treatise formalizes here nearly two millennia earlier. Formal concession, Cháng Bǎi stresses, is actually the best of the three ways to lose: it ends the exchange cleanly, without the flailing self-defense the next section describes.

Master Cháng Bǎi sorts the thirteen visible signs of being cornered into the treatise's own three groups: the first two — inventing a pretext to withdraw, or steering the conversation onto food, gossip, or scandal — are attempts to dodge the loss rather than face it; the middle seven — outburst, hostility, arrogance, exposing the opponent's own past faults, malice, stubborn refusal to accept the verdict, open disbelief — are misconduct that lashes out rather than concedes; and the last four — falling silent, visible dejection, a slumped and downcast posture, and sitting in thought with genuinely nothing left to say — are simple exhaustion, no longer performing anything, just out of resources. He notes the progression is itself instructive: from active evasion, through active aggression, to passive collapse — three different ways of failing to do what the previous section's thirteen dignified phrases do cleanly.

The nine faults of speech he reads as the exact photographic negative of the nine marks of perfected speech from the adornment of discourse (section 27): where that heading asked for order, gentleness, clarity, proper measure, coherence, right timing, decisiveness, transparency, and continuity, this heading names their failures one for one — and singles out the ten sub-varieties of "incoherence with meaning" (the fifth fault) as the largest and most consequential, since a reason or example that fails to actually connect to its own thesis, however fluently delivered, has failed at the one thing debate exists to do. With formal concession, visible cornering, and disqualifying speech all now covered, discourse's defeat — the fifth of the seven headings on logic — is complete, and the treatise turns to its next heading: discourse's withdrawal, on whether a debate is even worth entering in the first place.

Master Cháng Bǎi identifies the audience examination's decisive case: an assembly of committed adherents to a fixed wrong view — a crowd of non-Buddhist zealots with no interest in actually being persuaded — makes debate pointless no matter how sound the argument, since nothing can land where there is no openness to hear it; a worthy, discerning, receptive audience, by contrast, makes debate genuinely worthwhile even where the outcome is uncertain, because a receptive listener can actually be reached. He treats this as a corrective to a natural but mistaken instinct: that a good argument should always be made regardless of who is listening — the treatise insists the audience matters as much as the argument.

The final self-examination he reads as the most demanding of the three, because it requires honest self-assessment rather than merely assessing external conditions: mastery across all six of the preceding headings (the nature, venue, basis, adornment, defeat, and withdrawal of discourse already covered in this fascicle), the actual capacity to both establish one's own position and dismantle an opponent's, and — the subtlest test — whether one could actually lose gracefully, recovering equanimity rather than being destabilized by defeat. He notes this last point circles back to the thirteen dignified concession-phrases from two sections earlier: a debater unprepared to use them if needed is not yet ready to debate at all. With all three examinations — gain and loss, the assembly, and self-knowledge — now complete, discourse's withdrawal is finished, and the treatise turns to its seventh and final heading on logic: the methods of greatest use in discourse.

Master Cháng Bǎi notes this final heading deliberately draws only three of the five adornments of discourse from section 27 — mastery of both positions, fearlessness, and eloquence (folded here into "inexhaustible eloquence," which he identifies with the earlier "speech perfected in every respect") — leaving out dignified restraint and worthiness of respect, since those two describe a debater's personal bearing rather than what actually makes discourse functionally useful across any topic, any audience, and any challenge. The three that remain map exactly onto the three benefits named: broad mastery lets a debater engage any subject matter, fearlessness lets them face any assembly without being unseated, and inexhaustible eloquence lets them meet any objection as it comes. Together, he reads them as the treatise's own summary of what all thirty-six preceding components were actually for — not technical virtuosity for its own sake, but the practical capacity to teach and to protect the true doctrine wherever and whenever the need arises.

With this, Cháng Bǎi offers his own closing tally of the entire science of logic: the nature of discourse contributes six components, the venue six, the basis ten, the adornment five, defeat and withdrawal and the methods of greatest use three each — thirty-six components in total, or forty-three if the seven headings themselves are counted alongside their contents. This closes 因明處 (the science of logic) in its entirety — the third of the five worldly sciences opened back at section 10, and by a wide margin the largest single topic this translation has yet covered, spanning the sevenfold framework of discourse; the six kinds of discourse and six fitting venues; the vast basis of discourse with its two kinds of thesis and eight means of proof (positing the thesis, reason, example, similar and dissimilar class, and the three sources of valid knowledge — direct perception, inference, and scriptural authority); the five adornments and twenty-seven resulting virtues; the three kinds of defeat; the three self-examinations of withdrawal; and now, finally, the three methods of greatest use. The treatise next turns to the fourth of the five sciences: linguistics (聲明處).

Master Cháng Bǎi identifies linguistics as the treatise's account of grammar in the fullest sense: a name-body is a concept condensed into a word (like "table"), a sentence-body is a complete statement (like "all conditioned things are impermanent"), and a letter-body is the individual sounds — in Sanskrit, fourteen vowels and thirty-three consonants — that combine to build both. The five virtues of speech, he notes, are the exact same five named earlier for perfected discourse in the adornment of discourse (section 27): linguistics supplies the raw grammatical material, while the earlier heading concerned how skillfully that material gets deployed in actual debate. He treats this opening aspect as linguistics' foundation — everything the remaining five aspects cover (meaning, grammatical person, tense, number, and the treatises themselves) is built from these same three units: names, sentences, and letters.

Master Cháng Bǎi glosses the five kinds of treatise concretely: combination covers how individual letters join into words; naming covers how nouns and pronouns decline through their grammatical cases; condensed statement covers how compound words are built from simpler parts; secondary suffixation covers the endings added to noun-stems to derive new words; and verbal exposition covers how verbs conjugate. "Root" treatises, by contrast, are the foundational verses on sound itself — the phonetic bedrock beneath all five. He then retraces the tradition's own legendary lineage of increasingly compressed grammars: Brahmā's original one million verses, condensed by Indra to a hundred thousand, then by the sage Kātyāyana to twelve thousand, and finally by Pāṇini to eight thousand, the version students actually study; he adds Xuanzang and Yijing's records of five further supporting treatises used to teach specific aspects of the system, each requiring months to years of dedicated study, capped by Sthiramati's massive grammatical compendium as the tradition's most thorough achievement.

With treatises and their phonetic roots both named, linguistics (聲明處) — the fourth of the five worldly sciences, covering the construction of words, the ten (or six) domains of meaning, grammatical person, tense, number, and now the treatises themselves — is complete. The treatise turns to the fifth and final science: the practical arts.

Master Cháng Bǎi runs through the twelve briskly, as a working inventory of ordinary livelihood: farming (knowing when to plant, when to transplant, when to harvest); commerce (a merchant's practical acumen); civil service (the skill of serving well in government); the numerate trades — accounting, calculation, and seal-carving together; divination; incantation, which he notes covers everything from mainstream ritual practice to folk sorcery; construction, from private homes to public works; animal husbandry, raising livestock to sustain a community; textile work, which he notes was performed by men rather than women in some frontier regions of ancient Central Asia, unlike the household norm further east; mediation, the skilled use of persuasive speech to reconcile disputes; the food trade, restaurants and prepared meals; and music and dance, which — like every other craft on the list — genuinely requires cultivated skill to do well, not mere enthusiasm. He treats the number twelve as itself an act of skillful compression: the classical count of trades runs to three hundred and sixty, and reducing so much of ordinary human livelihood to twelve headings is, in his reading, itself an example of exactly the "condensed statement" skill just named in the previous section's account of how treatises are built.

With the practical arts named, the fifth and final worldly science is complete — and with it, so is the entire fivefold curriculum first announced back at section 10: inner wisdom (內明處, spanning fascicles 13 through the opening of this one), medicine (醫方明處), logic (因明處, this fascicle's single largest topic by far), linguistics (聲明處), and now the practical arts. The source text's own closing line makes the larger milestone explicit: with all five sciences now covered, the entire Ground of What Is Attained Through Hearing (聞所成地) — the tenth of the treatise's seventeen grounds, opened in fascicle 10 and carried across six full fascicles of source material — closes here, at the natural end of fascicle 15's source file. Fascicle 16 will open the eleventh ground, the Ground of What Is Attained Through Reflection (思所成地), on entirely fresh terrain.