Wēnyì lùn 瘟疫論
A Discourse on Warm-Epidemic by 吳有性 (Wú Yǒuxìng, zì Yòukě, 1582–1652, of Zhènzé, 明)
About the work
The foundational text of the Chinese Wēnyì 瘟疫 (warm-epidemic) school, in 2 juan with 1 juan of supplementary material, completed in Chóngzhēn rénwǔ (1642). The work was composed in response to the great Chóngzhēn xīnsì (1641) epidemic that struck Northern and Southern Zhílì, Shāndōng, and Zhèjiāng simultaneously, killing thousands when conventional Shānghán-tradition treatment proved ineffective. Wú’s distinctive theoretical contribution:
- Wēnyì enters through the mouth-and-nose (口鼻而入), not through the surface (毫竅 / 肌表) as cold-damage does;
- It lodges in the Móyuán 膜原 (membranous-source) — an intermediate physiological space that is “not exterior, not interior” (不表不裏);
- Its transmission has 9 patterns (傳變有九): exterior-only, exterior-then-exterior-again, interior-only, interior-then-interior-again, exterior-and-interior simultaneous, exterior-and-interior simultaneous then again-divided, exterior-stronger-than-interior, exterior-then-interior, interior-then-exterior;
- The clinical signs: pulse neither sinking nor hidden, found at middle-pressure; tongue with progressively darkening coating from white through yellow to black with thorny processes;
- There are 11 specific differences from Shānghán plus various transformation-and-comorbidity patterns;
- Out of hundreds of warm-epidemic cases, only one cold-damage; out of hundreds of cold-damage cases, only one yīn-deficiency — a deliberately exaggerated formulation that emphasizes the prevalence of Wēnyì in the contemporary epidemic.
The work is the foundation of the Qīng-period Wēnbìng school (Yè Tiānshì, Xuē Xuě, Wú Jūtōng, Wáng Mèngyīng), and represents one of the most significant late-imperial Chinese medical innovations.
Tiyao
Wēnyì lùn, 2 juan, with supplement 1 juan, by Wú Yǒuxìng of the Míng. Yǒuxìng’s zì was Yòukě, of Zhènzé. The work was completed in Chóngzhēn rénwǔ (1642). [Wú reasons that] the four-seasons’ irregular qì generates wēnyì — its disease similar to but utterly different from Shānghán; mistakenly treated as Shānghán, [the patients] mostly die. The ancient books had not been able to distinguish them; he therefore composed this discussion to elucidate.
The general thesis: that Shānghán enters through the body-hair-pores (毫竅), strikes into the channels-and-vessels, [progresses] from exterior to interior — so its channel-transmission has six [stages] from yáng to yīn, in sequence going deeper. Wēnyì enters through the mouth-and-nose, lodges in the Móyuán; its pathogen rests in the not-exterior-not-interior intermediate; its transmission-and-change has nine [patterns] — exterior or interior each separately producing disease. There are: exterior-only-not-interior; exterior-and-then-exterior-again; interior-only-not-exterior; interior-and-then-interior-again; exterior-and-interior separately-transmitting; exterior-and-interior separately-transmitting and again-separately-transmitting; exterior-stronger-than-interior; first-exterior-then-interior; first-interior-then-exterior. Among them there are 11 matters where it is contrary to Shānghán, plus also various transformation-syndromes and comorbidity-syndromes — all different. He composes discussions and creates prescriptions, distinguishing each one-by-one.
The clearly-easily-seen sign: the pulse rests in the not-sinking-not-hidden space, found at middle-pressure. The tongue has a coating, at first white, then yellow, ultimately black with thorny [points].
His statement that “out of hundreds of warm-epidemic cases there is occasionally one cold-damage; out of hundreds of cold-damage cases there is occasionally one yīn-syndrome” — cannot avoid being over-corrective. But the ancients took wēnyì as a miscellaneous-syndrome; medical books often included it in passing without establishing a separate specialty. Some misread the Sùwèn’s “winter-injured-by-cold spring-must-be-warm-disease” passage and recklessly applied [cold-damage] treatment.
Yǒuxìng — because in Chóngzhēn xīnsì (1641) the Northern-and-Southern Zhílì, Shāndōng, Zhèjiāng simultaneously suffered a great epidemic, and treating with the Shānghán method had no effect — therefore traced back the disease-source and composed this book. The Wēnyì syndrome from this point first had a measuring-line that could be followed — also can be said to have benefited the world.
The book is not very systematically arranged — seems to have been recorded at-the-brush as it came. We provisionally retain the original arrangement. The lower juan’s Láofù shífù (exhaustion-relapse food-relapse) entry mentions the Ānshén yǎngxuè tāng 安神養血湯; the Xiǎo’ér shíyì (Pediatric Seasonal-Epidemic) entry mentions the Tàijí wán 太極丸 — both with prescription-name but no medicines. Also the Yì lì jiānzhèng (Epidemic Dysentery Comorbidity) entry has-record-but-no-text. (N.B. — the SKQS editors note these textual lacunae; they appear to be transcriptional losses in the manuscript-printing tradition.)
[Continuation truncated in source.]
Abstract
Composition window: 1642/1642, the date Wú Yǒuxìng’s preface (Chóngzhēn rénwǔ).
The work’s significance:
(a) The foundational text of the Wēnyì / Wēnbìng school: Wú’s articulation of wēnyì as a categorically distinct disease from Shānghán, with its own aetiology (mouth-nose entry, Móyuán lodging), pathology (9 transmission patterns), and treatment principles, is the foundation of the entire Qīng-period Wēnbìng tradition. Through Wú, Chinese medicine acquired a systematic framework for epidemic febrile diseases distinct from the Shānghán tradition.
(b) The “Móyuán” intermediate-space doctrine: Wú’s identification of the Móyuán (membranous-source) as the lodging-place of warm-epidemic pathogen is one of the more original Chinese physiological-pathological concepts. The doctrine influenced subsequent Chinese clinical reasoning about systemic-infectious conditions.
(c) The 1641 epidemic context: the work is one of the most directly epidemic-driven major Chinese medical innovations. The Chóngzhēn xīnsì (1641) epidemic — possibly bubonic plague, typhus, or another systemic infectious disease — swept the lower Yangtze region and northern China at the end of the Míng with massive mortality; the political collapse of the Míng (1644) followed two years later. Wú’s clinical confrontation with the epidemic produced the doctrinal innovation.
(d) The qíyì (heteropathic qì) hypothesis: Wú’s broader theoretical claim — that wēnyì is caused not by general environmental disturbance but by a specific yìqì 異氣 (heteropathic qì) entering through the mouth and nose — is one of the more remarkable pre-modern Chinese anticipations of germ theory. The doctrine is not literally bacteriological but recognizes a categorically distinct infectious-pathogenic agent transmitted through respiratory routes.
(e) The modern reception: the Wēnbìng tradition Wú founded was the principal Chinese medical framework deployed against SARS (2003) and COVID-19 (2020) in modern TCM clinical practice. The 1642 work’s systematic understanding of respiratory-transmitted epidemic disease has direct modern-clinical relevance.
The catalog meta dynasty 明 is correct.
Translations and research
- Lin, Hsiao-yen 林孝燕 (trans.). Sections of the Wēn-yì lùn are translated in scattered modern publications.
- Hanson, Marta. Speaking of Epidemics in Chinese Medicine: Disease and the Geographic Imagination in Late Imperial China, Abingdon: Routledge, 2011. The principal English-language scholarly work on the Chinese epidemic-medicine tradition; treats Wú Yǒuxìng extensively.
- Mǎ Bóyīng 馬伯英, Zhōngguó yī-xué wén-huà shǐ 中國醫學文化史, 2 vols., Shànghǎi: Shànghǎi Rénmín, 2010 (extensive treatment of Wú Yǒuxìng).
- Mǎ Jìxīng 馬繼興, Zhōng-yī wénxiàn xué 中醫文獻學, Shànghǎi: Shànghǎi Kēxué Jìshù Chūbǎnshè, 1990 (entry on the Wēn-yì lùn).
- Cha-i Hong 洪嘉禾, Wú Yòukě yī-xué quán-shū 吳又可醫學全書, Beijing: Zhōng-yī Gǔjí, 1999. Standard modern critical edition.
Other points of interest
The Wēnyì / Wēnbìng tradition Wú founded is one of the major Chinese medical innovations of the early modern period and one of the principal pre-modern global anticipations of germ theory. The doctrine that specific epidemic diseases are caused by specific transmissible pathogenic agents — entering through respiratory routes and producing characteristic disease patterns — anticipates Pasteur and Koch’s late-19th-century germ-theoretical revolution by more than two centuries.
The Chóngzhēn xīnsì (1641) epidemic was one of the most devastating epidemic outbreaks in late-imperial Chinese history, contributing to the political collapse of the Míng dynasty in 1644 (the Lǐ Zìchéng rebellion and the Manchu conquest both benefited from Míng imperial weakness in the wake of the epidemic). Wú Yǒuxìng’s medical innovation came at a moment of unprecedented epidemiological catastrophe.