Twenty-Eight Kinds of Practitioners

Master Cháng Bǎi locates this fascicle precisely: the Ground of the Hearer-Disciples unfolds across four yogic processes — the first (fascicles 22–25) just closed, covering the fourteen provisions for the path; the second (fascicles 26–29), opening now, covers establishing categories; the third (fascicles 30–32) will cover the actual structuring of yogic practice; and the fourth (fascicles 33–34) will give a detailed account of cultivation itself. This second process opens with seventeen questions, immediately condensed into a single eight-line summary verse for memorization, covering: the varieties of practitioner; how they are classified, their object of meditation, and instruction; training and conduct in accordance with it; the failure of yogic practice, yogic practice itself, and mental engagement; the yoga master's work, how many kinds of yoga master exist, and cultivation itself; the fruit of cultivation, synonyms for "practitioner," and how many practitioners there are; the causes that establish practitioners as such, demonic forces and demonic activity, and finally what it means to set out toward liberation yet achieve nothing. Cháng Bǎi notes all seventeen will be unpacked in turn across the next four fascicles, beginning now with the first and most foundational: exactly how many kinds of practitioner exist within this path.

Master Cháng Bǎi reads this as neither a good nor a bad starting point, but simply a neutral one: someone who happened not to entrench any single affliction into a dominant habit across past lives, yet also never took up the specific antidotes the treatise names elsewhere — the "purifying objects of meditation" (contemplating impurity against desire, loving-kindness against aversion, dependent origination against delusion, the elements against pride, and breath-counting against discursive thought) — nor investigated affliction's object, basis, mark, category, timing, and underlying principle closely enough to weaken it. The result is a mind where any of the five afflictions can still arise given the right trigger, just never with the fierce, self-reinforcing intensity the dominated types display — genuinely average, in other words, rather than either afflicted or purified. The ninth type, light affliction, opens immediately after as its natural counterpart: someone whose afflictions, whatever their type, are simply thin and weak across the board.

Master Cháng Bǎi contrasts light affliction directly with balanced temperament: where the balanced type never took up affliction's antidotes, the light-afflicted type genuinely has — seeing desire's real dangers, cultivating revulsion toward it, and investigating it through the treatise's own sixfold analysis (its object, basis, mark, category, timing, and underlying principle) — so that even the most attractive object barely stirs a flicker of desire, and lesser objects stir nothing at all. Fascicle 29 identifies this type as the fastest to attain genuine meditative stability, since they carry none of the heavy karmic obstructions, fierce entrenched afflictions, or unfortunate rebirth circumstances that slow other practitioners down.

"Approaching a fruit" then opens the treatise's classical four-stage framework of the path itself. Someone "approaching stream-entry" has entered the path of seeing — the first direct realization of the Four Noble Truths — but not yet completed its full sixteen-moment sequence; traditionally, once a practitioner reaches this point they are guaranteed to complete stream-entry and will not die before doing so. "Approaching once-returning" and "approaching non-returning" name practitioners in the process of eliminating further grades of affliction bound to the desire realm, whether progressing step by step through each fruit in sequence or advancing more directly, having already weakened desire through worldly meditative attainment before ever entering the path of seeing. "Approaching arhatship" names a non-returner working to eliminate the subtlest remaining afflictions, bound to the very peak of conditioned existence, on the way to final liberation. Cháng Bǎi notes the classical six preparatory contemplations behind this progress — cultivating revulsion toward the desire realm's coarseness, suffering, and obstruction, and aspiration toward the first absorption's superior, subtle, and liberating qualities — as the meditative engine driving a practitioner from one stage toward the next.

Master Cháng Bǎi treats faith-followers and dharma-followers as naming the same fundamental duller-versus-sharper distinction already introduced through dull and sharp faculties, now specifically applied to how a practitioner first engages the teaching before reaching any fruit: a faith-follower advances by trusting and following a teacher's direct instruction, without yet having the independent capacity to investigate scripture — hearing, accepting, fully understanding, reflecting on, weighing, and observing its meaning — on their own; a dharma-follower has exactly that independent capacity, and needs no outside guidance to progress. The moment either actually touches the fruit of stream-entry — the direct, sixteen-moment realization of the Four Noble Truths — their designation changes: the faith-follower becomes "one liberated through resolute faith," since their liberation was reached primarily through faith in guidance received; the dharma-follower becomes "one who has reached right view," since theirs was reached through direct investigation arriving at genuine insight. Cháng Bǎi notes both new names share the same underlying event — the mind's release from the three fetters of self-view, attachment to wrong rules and rituals, and doubt — differing only in which capacity, faith or independent insight, led there first.

Master Cháng Bǎi explains "fetters" as afflictions that bind beings to the three realms, unite them with suffering, and poison body and mind at the root — and notes a natural question the Abhidharma-mahāvibhāṣā addresses at length: since a stream-enterer actually eliminates all eighty-eight conceptually-based afflictions, why does the treatise single out only these three? Twenty separate reasons are offered there, boiling down to a few key ideas: these three are the most representative, since every other affliction ultimately traces back to one of them (wrong views branching from self-view, indulgent asceticism from attachment to rules and rituals, and further confusion from doubt); they are the most stubborn, persisting even in subtle form as habitual residue long after being formally cut (an arhat, for instance, might still say "my bowl" or "my robe" out of old habit, even with no genuine belief in a self left to possess anything); and naming them specifically matches how directly they obstruct the three approaches to liberation through emptiness, wishlessness, and signlessness. Cutting all three guarantees a stream-enterer can never again descend to an unfortunate rebirth, and guarantees eventual arhatship — at the very most, seven more round trips between the human and heavenly realms, fourteen lives in total, before reaching the final limit of suffering.

Master Cháng Bǎi identifies "one interval remaining" as a once-returner who has pressed on to eliminate all but the very last, lowest grade of desire-realm affliction, leaving only a single further rebirth among the desire-realm gods (or, in a parallel human variant, a single further rebirth among humans) before reaching arhatship in that very life — the "interval" being that one remaining birth standing between the practitioner and final liberation.

He then unpacks the three gradations of nirvana reached in the intermediate state itself — the transitional consciousness-body traditionally understood to exist between death and the next rebirth. All three describe a non-returner who died in the desire realm carrying unusually strong momentum from prior practice, and who completes the elimination of the remaining subtle afflictions bound to the two higher realms sometime during that in-between state rather than waiting for rebirth to actually occur. The three differ only in exactly how much of that interval elapses first: the fastest attains it the instant the intermediate-state body arises, like a spark from flint gone before it's even fully visible; the middle speed attains it after some time has passed but before rebirth is actively underway, like sparks thrown from a red-hot iron under the hammer, extinguished before they can fall; and the slowest attains it only once already moving toward the next rebirth, not yet arrived, like those same sparks vanishing just before striking the ground. All three, different only in timing, are together classed as one single type: parinirvana in the intermediate state.

Master Cháng Bǎi contrasts nirvana with effort against its counterpart: here the remaining afflictions yield only through genuinely sustained, effortful practice after rebirth, not automatically. He then describes the ascending type as a non-returner who, rather than completing the journey in the first absorption, dies there and rises through each successive level — the second, third, and fourth absorptions, through the four "pure abodes" at the peak of the form realm, and, for a duller variant, on through the formless absorptions to the very summit of conditioned existence — reaching final liberation only at whichever level marks the top of their particular ascent. Two temperaments distinguish this type: those who love wisdom, who practice absorption mixed with insight and reach liberation at the form realm's highest peak, and those who love concentration, who practice absorption alone and reach liberation only at the very peak of the formless realm. Each further divides into three, by how much of the intervening ascent is actually traversed: a "full leap" bypasses every intermediate level entirely, going directly from the first absorption to the final peak; a "half leap" skips some levels but not all; and a "traversal of every level" passes through each heaven in strict sequence, omitting none. Together with the earlier three-fold intermediate-state nirvana, nirvana upon rebirth, nirvana without effort, and nirvana with effort, this ascending type completes what the treatise calls the "seven destinies of the good person" — seven distinct routes by which a non-returner reaches final arhatship.

Master Cháng Bǎi identifies five distinct grades within this dull-root arhat type, distinguished by how they relate to the ever-present risk of losing their meditative attainment: the retrogressive type, prone to genuinely losing it when distracted by excessive activity, idle talk, quarreling, travel, or illness; the thought-prone type, who, fearing that same loss, contemplates ending their own life rather than risk falling back under affliction's power; the guardian type, who actively and successfully protects what's been attained through vigilant effort; the abiding type, who — while free of the strongest causes of relapse — simply maintains a stable plateau without further advancing, lacking the extra effort needed for genuine progress; and the progressive type, whose real capability lets them push forward through refining their own faculties toward the next classification, unshakeable attainment. Cháng Bǎi explains why this whole grade is called "time-liberated": their freedom manifests only when six specific favorable conditions actually converge — fine clothing, excellent food, comfortable bedding, a genuinely quiet dwelling, teaching precisely suited to their needs, and companionship with virtuous, easy-to-live-with fellow practitioners. Lacking any of these six, genuine liberation simply doesn't manifest for this type — hence "liberated only at the right time," when conditions happen to align.

Master Cháng Bǎi distinguishes the two final arhat types by exactly what has and hasn't been overcome: a wisdom-liberated arhat has genuinely ended every affliction — the obstruction to liberation itself — through the power of wisdom alone, but hasn't necessarily mastered the eight liberations' full meditative absorption, the deepest levels of concentration up through cessation itself; a both-liberated arhat has accomplished both, ending affliction through wisdom and also mastering the complete nine successive stages of absorption, including the cessation attainment, so that both the obstruction of affliction and the separate obstruction to deep concentration are fully overcome. The both-liberated arhat, Cháng Bǎi notes, is also the type most naturally associated with fully developed supernormal powers, since complete mastery of absorption is what supports their fullest expression.

With this, the treatise's complete taxonomy of twenty-eight practitioner types — the very first of the second yogic process's seventeen questions — closes in full, spanning every stage from the most basic temperamental distinctions through the subtlest refinements of full liberation.

Master Cháng Bǎi previews how each of the eleven principles maps back onto categories already given: faculty-difference produced the dull- and sharp-facultied pair; assembly-difference sorts practitioners across the sevenfold monastic and lay community; temperament-difference produced the seven types dominated by desire, aversion, delusion, pride, discursive thought, balanced temperament, and light affliction; vow-difference distinguishes those who have taken up the hearer-disciple's aspiration, the solitary-realizer's, or the bodhisattva's; practical-approach-difference produces the four classical combinations of painful-slow, painful-fast, pleasant-slow, and pleasant-fast progress toward realization; path-fruit-difference produced the eight types approaching or abiding in each of the four fruits; effort-difference produced faith-followers and dharma-followers; concentration-difference distinguishes non-returners who master the eight liberations from arhats who do; rebirth-difference produced the eight non-returner sub-types tracking exactly how many further rebirths remain; retrogression-difference produced time-liberated and unshakeable arhats; and obstruction-difference produced wisdom-liberated and both-liberated arhats. Every one of the twenty-eight types just completed, in other words, traces back to exactly one of these eleven organizing principles — the treatise now turns to explain each principle in its own right, beginning with the difference of faculty.

Master Cháng Bǎi reads the anger-type as the desire-type's near-total opposite: withered, rigid features rather than soft ones; a harsh, combative manner rather than an easygoing one; genuine willingness to harm others through word or deed; work and discipline that can't hold steady, precisely because irritation keeps disrupting follow-through; a perpetually furrowed brow, a face that never opens, a downward, sidelong glare, and real envy at others' good fortune. The one advantage Cháng Bǎi notes: anger, once recognized, is comparatively easy to develop genuine revulsion toward — its ugliness is obvious even to the person feeling it, unlike desire's more disguised, pleasant-seeming grip.

The delusion-type, by contrast, is marked less by hostility than by a kind of pervasive dullness: slow reactions, slow speech, habitual laziness, tasks left unfinished, weak eloquence, poor memory, little genuine self-awareness, and views easily bent toward whatever's plausible-sounding rather than actually examined — someone genuinely attached to indulgence yet unable to articulate why, easily swept along by others' influence and direction since their own convictions were never firmly grounded to begin with. Cháng Bǎi notes this type faces the hardest road of the three: not lacking desire or anger's obvious energy to redirect, but lacking the basic clarity needed to even recognize what needs redirecting.

Master Cháng Bǎi closes the temperament principle noting the discursive-thought-type's restlessness extends even into their formal commitments — unsteady discipline, unsteady undertakings, mirroring the same scattered quality visible everywhere else in their conduct.

Vow-difference then opens a genuinely significant doctrine: a practitioner may formally take up any of the three vehicles' vows — hearer-disciple, solitary-realizer, or bodhisattva — but the treatise insists an underlying spiritual lineage, cultivated across countless past lives, ultimately determines where they will actually end up regardless of which vow they happen to adopt in the meantime. Someone of hearer-disciple lineage who takes up the bodhisattva vow, for instance, will eventually abandon it and settle back into the hearer-disciple's path; the same logic applies symmetrically to the other two lineages. Cháng Bǎi frames this as the treatise's own answer to why sincere religious aspiration sometimes doesn't "stick" — the vow is a surface commitment that can shift, but lineage is a much deeper current beneath it that ultimately wins out. He also flags that the rest of this section narrows its scope deliberately: everything from here forward concerns specifically the hearer-disciple's vow and lineage, since that is this treatise's primary subject.

Master Cháng Bǎi notes the remaining six principles function purely as cross-references, each simply re-deriving categories from the original taxonomy of twenty-eight already given in full: path-fruit-difference regenerates the eight types approaching or abiding in each fruit; effort-difference regenerates faith-followers and dharma-followers; concentration-difference regenerates the body-witness specifically, distinguished from an ordinary arhat by having mastered the eight liberations without yet having exhausted every affliction; rebirth-difference regenerates the eight non-returner sub-types tracking exactly how many further lives remain; retrogression-difference regenerates the contrast between the time-liberated arhat (whose attainment can lapse) and the unshakeable arhat (whose attainment cannot); and obstruction-difference regenerates the contrast between the wisdom-liberated arhat (who has ended affliction but not fully mastered absorption) and the both-liberated arhat (who has accomplished both). Cháng Bǎi flags one substantive digression along the way: the Abhidharma-mahāvibhāṣā's own list of twenty paired comparisons explaining exactly why some practitioners' attainment remains vulnerable to relapse while others' does not — trust in a teacher versus independent conviction, unexamined versus thoroughly examined entry onto the path, weak versus fully developed causal and applied strength, faith-led versus wisdom-led practice, and so on through nineteen more such pairings, each following the same pattern: the first member of the pair correlates with vulnerability to relapse, the second with genuine stability. With this sixth and final principle, "establishing practitioners" — the second of the second yogic process's seventeen questions — closes in full, its eleven organizing principles together accounting for the complete taxonomy of twenty-eight practitioner types given at the fascicle's opening.

Master Cháng Bǎi previews all four categories of meditative object before the treatise unpacks them one by one. Purifying objects are the five already familiar from fascicle 24 — impurity against desire, loving-kindness against aversion, dependent origination against delusion, analysis of the elements against pride, and breath-counting against discursive thought. Skillful objects are the five kinds of skillfulness — in the aggregates, sense-fields, elements, dependent origination, and the possible and impossible — already introduced as the basis for specific- versus common-characteristic reflection. Objects that purify affliction cover both the worldly path (contrasting a lower meditative level's coarseness against a higher level's refinement, through the six preparatory contemplations) and the world-transcending path (the sixteen aspects of the Four Noble Truths). Pervasive objects, opened first here, are called "pervasive" precisely because every one of the other three categories is, in the end, approached through one of these four modes — they describe not what is contemplated, but how any object whatsoever is actually engaged in meditation: as an image still accompanied by analytical discrimination, as an image held free of such discrimination, as the direct realization of a thing's ultimate nature, or as the mastery achieved once genuine practice bears fruit.

Master Cháng Bǎi walks through how a meditation object actually gets constructed: whether through independent investigation (for the sharper dharma-follower) or through a teacher's direct guidance (for the more dependent faith-follower), a practitioner forms a mental image genuinely corresponding to whatever's being contemplated — vivid enough that, held in meditative equipoise, it functions as though directly present, the way a corpse's impurity can be made to appear in the mind's eye as clearly as it once appeared to the physical eye. Once formed, this image is examined through four progressively deeper modes of discernment: discerning its specific nature (what the aggregates are and are not, for instance), discerning its shared nature (their impermanence, suffering, and non-self), broadly investigating it through a first, coarser pass, and broadly scrutinizing it through closer, more refined examination.

Cháng Bǎi then draws out a passage he considers genuinely important: Maitreya's own question to the Buddha in the Saṃdhinirmocana Sūtra, asking how many of these four pervasive objects belong to calming meditation, how many to insight, and how many to both. The Buddha's answer corrects a natural but mistaken assumption. It is not that calming takes conventional truth as its object while insight takes ultimate truth, or that only insight can engage emptiness while calming is somehow restricted to ordinary appearances — both truths can be approached through either mode. The image free of discrimination — held in sustained, non-analytical attention — belongs to calming, regardless of whether what's held is a conventional or an ultimate object; the image accompanied by discrimination — actively discerned and investigated — belongs to insight, again regardless of which truth is involved; and the two remaining pervasive objects, the very limit of things and the task accomplished, belong to both together. Cháng Bǎi stresses this dissolves two common errors at once: assuming genuine insight always means intellectually analyzing something (so that sustained, wordless attention couldn't count as insight), and assuming calming can never engage emptiness directly (so that resting attention on ultimate reality itself would somehow not count as calming). The real distinction is procedural — sustained focus versus active discernment — not a difference in what is being looked at.

Master Cháng Bǎi clarifies that "free of discrimination" doesn't mean the image itself disappears — it means the four modes of active analysis used in insight practice (discerning, thoroughly discerning, investigating, scrutinizing) are simply set aside, while the same image continues to be held in mind through sustained attention alone. He walks through the nine stages once more in this specific context: drawing the mind inward from external distraction; evening out its grip so each moment matches the last; catching and correcting it the instant it wanders; anticipating and forestalling distraction before it even arises; taming the mind's response to the ten alluring or aversive marks that would otherwise scatter it; calming it against the eight subtler kinds of preoccupying thought and the five hindrances; calming it utterly, correcting even momentary lapses the instant they appear; sustaining effortful but unbroken one-pointed focus; and finally resting in genuinely effortless, self-sustaining balance — concentration functioning on its own, without strain. This is meditation's central technical vocabulary, worth holding in mind as one clean, non-analytical mode of engaging any object at all — the object no longer analyzed, but never actually abandoned either, since letting go of it entirely would leave nothing left to concentrate on.

Master Cháng Bǎi explains "the limit of things" as reached only by holding two complementary kinds of understanding together. Exhaustive particulars means mapping a phenomenon's full specific range without remainder — confirming that the five aggregates between them cover the entirety of conditioned experience, that the eighteen elements and twelve sense-fields between them cover the entirety of specific phenomena, and that the Four Noble Truths cover the entirety of what's genuinely worth knowing — nothing left uncounted, nothing left unclassified. Universal nature, by contrast (which the treatise takes up next), means grasping what all these particulars share in common — their impermanence, suffering, emptiness, and non-self. Cháng Bǎi stresses that neither aspect alone completes the picture: understanding suchness without having exhaustively mapped its particular instances risks a hollow, ungrounded abstraction cut off from dependent origination's actual workings, while mapping particulars without ever grasping their shared nature risks endless cataloguing that never arrives at genuine insight. Emptiness doesn't obstruct dependent origination, and dependent origination doesn't obstruct emptiness — both together, cause and principle, phenomenon and nature, are required for the limit of things to be genuinely reached.

Master Cháng Bǎi applies the same four principles of reasoning already used on the five aggregates back in fascicle 25 — dependence (the aggregates arise only through causes and conditions, and are only ever picked out through conventional naming), function (each aggregate performs its own distinct, non-substitutable role), proof (verified through scripture, direct perception, and inference together), and natural law (their impermanence, suffering, emptiness, and non-self are simply how things are, not further derivable) — as the method by which universal nature is actually established, rather than merely asserted. He notes the treatise elsewhere calls this same universal nature by seven names depending on context — the suchness of flux (all conditioned things arising without any fixed prior ordering), of characteristics (the twin emptiness of person and phenomena), of mere cognition (all conditioned activity being, at bottom, consciousness), and the suchness proper to each of the Four Noble Truths — different facets of the identical underlying reality. With this second aspect established, "the limit of things" — exhaustive particulars and universal nature together — closes as the third pervasive object, itself serving as the object of both calming and insight meditation together, since it can be approached either through sustained attention or active discernment depending on how a practitioner engages it.

Master Cháng Bǎi treats "task accomplished" as naming the actual fruit born from sustained practice of everything already described — the seven mental engagements (from first apprehending an object's mark through resolute understanding and beyond) brought to full completion. This completion produces what the treatise calls a "transformation of basis" (āśraya-parāvṛtti): the coarse, obstructive residue built up by affliction is genuinely extinguished, and — crucially — the practitioner's engagement with the object goes beyond the mental image relied on throughout ordinary practice, arriving instead at undefiled, direct, non-conceptual realization of the object's actual nature. Cháng Bǎi notes six classical grades of this transformation, ranging from the modest weakening of afflictive tendencies still possible at the preparatory stages, through the genuine breakthrough of the path of seeing, the progressive deepening of the path of cultivation, up to the complete transformation of full buddhahood — with the hearer-disciple's own attainment, discussed here, representing what's called the "lesser" transformation: genuine realization of the emptiness of a fixed self, though not yet the fuller two-fold emptiness a bodhisattva eventually realizes.

He also draws out the important distinction the treatise makes between "wisdom" (智) and "vision" (見) — both simply the same underlying mental factor of discernment, differently named depending on function: wisdom knows what's absent from present experience (the past, the future, general principles), while vision directly apprehends what's immediately present; wisdom is built through hearing and reflection, vision through actual cultivation; wisdom follows the successful cutting of affliction, vision is what actually cuts it. Both, once genuinely undefiled, extend through the complete set of nine progressively deeper meditative absorptions — the four form-realm levels and the four formless spheres, and, by clear implication, the ninth and final cessation attainment beyond even those — each level bringing its own domain of direct, unmediated realization. Cháng Bǎi stresses this differs categorically from merely worldly mastery of the same nine levels, which — however deep — remains contaminated by subtle traces of self-view unless approached specifically through this undefiled path; only when genuinely undefiled do these absorptions count as "task accomplished" in the full sense meant here. With this fourth object, all four pervasive objects — the image with discrimination, the image without discrimination, the limit of things, and task accomplished — are now complete, closing the first of the four broad categories of meditative object named at this topic's opening.

Master Cháng Bǎi explains "pervasive" precisely: every object a practitioner might take up — whether one of the five purifying objects, the five kinds of skillfulness, or the paths that purify affliction itself — is, in actual practice, always engaged through one of these same four modes: as an image actively discerned (belonging to insight), as an image held in sustained non-analytical attention (belonging to calming), as the limit of things in both its particular and universal aspects (belonging to both), or as the eventual fruit of completed practice (likewise belonging to both). Nothing in meditation falls outside this fourfold structure — hence "pervasive."

He introduces Elder Kṣitigarbha as a monk known in the early tradition for his devotion to meditation, whose question to the Buddha frames everything that follows: not what to meditate on, but how the mind actually comes to rest on whatever's chosen. The Buddha's answer names three conditions together with one constant commitment: a matched object, genuinely suited to counter whichever affliction is actually strongest in a given practitioner; a corresponding object, meaning the specific inner image that must actually be brought clearly to mind once the right object is chosen; an undistorted object, meaning the image formed must actually be correct — a corpse contemplation that accidentally produces a beautiful image, for instance, has gone wrong somewhere; and, throughout all of this, never abandoning meditative stability itself, regardless of which specific object is being worked with. Cháng Bǎi treats this three-plus-one structure as the practical key unlocking the remaining three categories of object: purifying objects (matched to the five specific afflictions — impurity for desire, loving-kindness for aversion, dependent origination for delusion, analysis of the elements for pride, breath-counting for discursive thought, exactly as first introduced in fascicle 24's teaching on wakeful practice), skillful objects (the five kinds of skillfulness in aggregates, elements, sense-fields, dependent origination, and the possible and impossible, first introduced in fascicle 25, now reopening specifically to address the deeper confusion about self that survives even after affliction's grossest forms have been countered), and objects that purify affliction at its root (the worldly and world-transcending paths). Each of the three remaining categories, in other words, is really just the pervasive objects' four modes applied to a specific therapeutic purpose.

Master Cháng Bǎi closes out the "matched object" teaching by completing the five kinds of skillfulness (sense-field skillfulness for confusion about causal conditions, dependent-origination and possible-impossible skillfulness together for the four fundamental distortions of permanence, pleasure, self, and purity) and the objects that purify affliction at the root — the worldly path's contemplation of a lower realm's coarseness against a higher realm's calm (desire realm against form, form realm against formless), and the world-transcending path's direct realization of the Four Noble Truths, aimed at self-view specifically, since self-view is what pervades and underlies every realm of rebirth alike.

He then explains the corresponding object and undistorted object specifically as Kṣitigarbha's question frames them: the meditative image formed in concentration genuinely resembles — without literally being identical to — whatever was originally seen, heard, or understood before entering concentration, apprehended through wisdom (which resolves doubt), vision (which investigates), and mindfulness (which sustains recall) all working together; and the object is undistorted precisely when it is understood exactly as it actually is, neither more nor less. Finally, "never abandoning meditative stability" is explained through the three balancing techniques already familiar from earlier fascicles — calming when the mind grows agitated, uplifting through joyful recollection when it grows dull, and equanimity once both are genuinely balanced and no further adjustment is needed.

Cháng Bǎi closes with the four purities this entire teaching, sustained through genuine cultivation, actually produces: purity of basis (the coarse residue of affliction extinguished), purity of object (the known matter directly seen rather than merely inferred), purity pervading the mind (freedom from craving), and purity pervading wisdom (freedom from ignorance) — the same transformation already described under "task accomplished," now confirmed as the direct fruit of everything Kṣitigarbha's question set out to clarify. With this, the entire framework of matched, corresponding, and undistorted objects — and with it, the treatise's account of purifying objects, skillful objects, and objects that purify affliction — closes, completing the third of the second yogic process's seventeen questions.

Master Cháng Bǎi treats this as the treatise circling back to give purifying objects their own full, dedicated exposition — the earlier dialogue with Kṣitigarbha only sketched the basic pairing of affliction to antidote; this passage unpacks each purifying object in real depth, starting with the richest of the five: impurity. Six kinds are distinguished: decaying impurity (the body's own physical composition, internal and external); the impurity of suffering (painful feeling and everything bound up with it); base impurity (the desire realm's five sense-objects generally); comparative impurity (anything lower looking impure only relative to something higher — form-realm phenomena appearing impure next to the formless, existence itself appearing impure next to nirvana's peace); afflictive impurity (every affliction's seeds and active manifestations across all three realms); and the impurity of swift decay (the simple fact that the five aggregates are impermanent, unreliable, and constantly breaking down).

Cháng Bǎi identifies the root cause behind most failed practice as excessive attachment to this very body — fear of cold, heat, poor food, or poor sleep quietly derails far more practitioners than any dramatic obstacle. The thirty-six-part inventory of internal decaying impurity is meant to dismantle that attachment directly, and Cháng Bǎi walks through each part in real anatomical and, often, strikingly clinical detail: hair, nails, and body hair, each considered by color, shape, and the specific disgust particular to it (a stray gray hair in one's soup, nail dirt packed with skin flakes and food residue); teeth prone to decay, staining, and bad breath; skin that no amount of washing ever makes genuinely clean, quoting the Mahāprajñāpāramitā-śāstra's own line that not even emptying the ocean over this body could make it truly fragrant; flesh, bone, sinew, and blood vessels, none of them individually appealing once separated from the illusion of a smooth, whole surface; the internal organs — heart, gallbladder, liver, lungs, intestines, stomach, spleen, kidneys — each described through its actual biological function and the diseases that afflict it; and the body's various fluids and secretions — pus, phlegm, fat, marrow, mucus, saliva, tears, sweat, feces, and urine — each, without exception, something no one would willingly touch outside the body, yet all of it continuously produced and carried within what's ordinarily mistaken for something clean and desirable. Cháng Bǎi groups the full thirty-six into three sets of twelve — surface features, internal organs proper, and the deeper visceral structures — and stresses the exercise isn't morbidity for its own sake: seeing the body this clearly and specifically is precisely what loosens the deep, often unconscious attachment that otherwise quietly sabotages a practitioner's ability to embrace real hardship for the sake of genuine practice.

Master Cháng Bǎi notes external decaying impurity simply restates the nine-stage corpse contemplation already given in full in fascicle 24 — livid discoloration through scattered bone — now folded into this broader sixfold framework, together with internal impurity forming a single unified contemplation. He then moves through three further kinds efficiently: the impurity of suffering is simply the desire realm's painful bodily and mental feeling, arising the moment the body inevitably ages, sickens, or changes, dragging fear, anxiety, and grief along with it — the exact mechanism the Buddha described to Śāriputra in the Saṃyukta Āgama, where an ordinary person's ignorance of form's true nature turns its inevitable change into genuine suffering. Base impurity names the desire realm itself as the very lowest of the three realms — nothing conceivable is more degraded, since it alone contains the full range of the ten unwholesome courses of action. And comparative impurity introduces a genuinely striking relativizing move: purity itself is always relative to what it's measured against — the form realm looks impure next to the formless, and even the very peak of conditioned existence, the highest possible attainment within saṃsāra, still looks impure next to nirvana's genuine peace. Nothing within the wheel of rebirth, however refined, escapes this comparison — only liberation itself stands outside the entire scale.

Master Cháng Bǎi closes the six kinds of impurity briefly: afflictive impurity simply names every affliction across all three realms by its various technical synonyms (fetter, bond, latent tendency, secondary affliction, entanglement — twenty-six such names appear elsewhere in the treatise); swift-decay impurity names the five aggregates' basic unreliability — constant momentary change, a finite lifespan, vulnerability to sudden unexpected death, and a body never guaranteed to remain comfortable even while alive.

He then opens what he considers the real payoff of this entire sixfold analysis: five specific kinds of craving it exists to dismantle. Craving for one's own body covers both hoping for a pleasant future rebirth and clinging to present bodily comfort; lustful craving for another's body covers sexual desire specifically; craving for sense-objects covers ordinary attachment to pleasant food, scenery, and comfort; craving for form-realm absorption covers subtle attachment even to meditative bliss itself; and craving rooted in self-view covers the deepest, most pervasive craving of all — simple attachment to the felt sense of "I," present in some form across all three realms. Internal decaying impurity directly counters the first; external decaying impurity — contemplating a corpse's decay — directly counters the second, illustrated by Cháng Bǎi with a pointed exercise: vividly imagining one's own most cherished romantic attachment dying and decomposing through every stage down to a heap of ash, then genuinely asking what, exactly, was ever being loved. He further breaks lustful craving into four specific sub-cravings — for complexion, for physique, for touch, and for being served or cared for — each requiring its own emphasis within the corpse contemplation to fully dismantle, since a generic sense of impermanence doesn't always reach every specific attachment a craving mind has quietly built.

The full map, per Master Cháng Bǎi: craving for pleasant sense-objects is countered by contemplating how every pleasant feeling is shadowed by suffering (impurity-of-suffering) and how even the finest sensory pleasure available is, compared to higher states, base and unworthy of attachment (base-impurity). Craving for form-realm meditative absorption — subtle attachment even to the bliss of deep concentration — is countered by comparative-impurity, seeing that every realm, however exalted, remains impure relative to what lies beyond it, all the way up to nirvana itself. And craving rooted in self-view, the deepest and most pervasive of the five, spanning every realm of existence from the desire realm up to the very summit of the formless realm, is countered by two impurities together: naming the affliction directly (afflictive impurity) and observing the five aggregates' constant, unreliable decay (swift-decay impurity) — since the sense of a solid "self" only survives by ignoring exactly that decay. Master Cháng Bǎi closes with a clarifying point often missed: canonical texts elsewhere usually treat only decaying impurity in depth, discussing internal and external corpse-contemplation; it is this treatise's own distinctive contribution to spell out that the other five impurities are not merely background theory but each has its own precise clinical use, matched one-to-one against a specific kind of craving. The six impurities, understood this way, form a complete toolkit — not one meditation but six, chosen according to which of the five cravings most needs treatment.

A single object-family, three practices distinguished purely by the target's condition: loving-kindness wishes happiness on someone presently neutral; compassion wishes an end to someone's present suffering; sympathetic joy rejoices in someone's present happiness rather than resenting it. Master Cháng Bǎi treats this as the treatise's own compact version of the classical four immeasurables (equanimity, the fourth, is implicit in the "equally" that governs all three). Its stated clinical use closes the topic: for a practitioner whose dominant affliction is hatred — of the five affliction-types the treatise named back among the twenty-eight practitioner categories — sustained loving-kindness practice toward all beings is the specific antidote, thinning the hatred until the mind is genuinely purified of it.

The source text ends here. This closes the second of the five purifying objects (impurity and loving-kindness are now both fully treated); the remaining three — dependent-origination, the elements, and breath-mindfulness — along with the two categories that follow (skillful objects and objects that purify affliction), continue in fascicle 27.