The Han and the making of the canon

Why the literate bureaucracy of the Han was decisive for a medical canon to exist at all.

The Warring States had plenty of medical practice; what they lacked was any body able to gather it. Imperial unification created archives, literate officials, and a palace library, and with it the need to compare copies and decide what deserved keeping. At the end of the first century BCE, Liu Xiang and his son Liu Xin collated those holdings and classified them. The bibliographic treatise of the Han Shu preserves that work and gives medicine, for the first time, a place with categories of its own inside official knowledge.

The section on the arts of the body separates the medical classics from the recipe classics, and adds the bedchamber arts and the arts of longevity. That neighbourhood unsettles modern readings, which would prefer a medicine already purged of everything else, but it reflects how things were classified then. Of the titles listed, virtually none survives: the catalogue works as the floor plan of a demolished building.

• Imperial cataloguing precedes and enables the very idea of a medical work of reference.
• The Han Shu’s Yiwenzhi reworks the inventory of Liu Xiang and Liu Xin.
• The arts of the body are subdivided into four branches, not medicine alone.
• Of most listed titles we keep only the name.

Yiwenzhi 艺文志 A bibliographic treatise included in a dynastic history. The Han Shu’s is the oldest surviving annotated catalogue of Chinese writing, and the chief source on the medical books circulating under the Han.

The late Han setting in which the period’s most influential medical work was written.

The last decades of the Han brought rebellion, civil war, mass displacement, and mortality. Literary sources of the period describe outbreaks that emptied whole towns; a much-quoted letter by a prince of the time laments the loss of nearly an entire circle of writers in a single wave. Against that background, the preface to the Shang Han Za Bing Lun states that two thirds of the author’s clan died within a few years, and that most deaths came from what his age called cold damage.

Two cautions are worth keeping. The first is philological: the preface reaches us through the same chain of transmission as the rest of the work, and how literally it should be read is disputed. The second is historical: “cold damage” was a broad category for abruptly beginning febrile conditions, not the name of one disease. Identifying it with a modern infectious agent is an operation the sources do not license.

• The late Han combines warfare, displacement, and recurring epidemics.
• Zhang Zhongjing’s preface presents the work as an answer to a family disaster.
• The literal authenticity of that preface is a matter of philological debate.
• Shang han names a category of its own period, not a present-day diagnosis.

Shang han 伤寒 “Cold damage”. A Han-period classificatory category for acutely beginning conditions attributed to an outside assault. It is a historical term inside its own system, not the translation of any modern nosological entity.

How the Neijing corpus is put together, and what the Nanjing does with it.

The Huangdi Neijing is neither one book nor the work of one author: it is a corpus in two parts, Suwen and Ling Shu, made of texts from different hands and periods gathered under the Yellow Emperor’s name. It shows on the inside, where chapters contradict one another, repeat, or use the same term in different senses. The dialogue form between sovereign and counsellor is no minor literary device: it turns doctrine into something asked about and justified, rather than merely prescribed.

The Nanjing proceeds otherwise. It takes eighty-one difficult issues and answers them one by one, with a systematic ambition the Neijing lacks. Its choices proved durable: it concentrates pulse examination at a single site on the wrist instead of spreading it across several regions of the body, and it gives coherent order to the eight extraordinary vessels. Its date and authorship are uncertain; the traditional ascription to Bian Que does not hold.

• Suwen and Ling Shu gather textual layers from different authors and moments.
• The internal contradictions are a feature of the corpus, not a copyist’s slip.
• The Nanjing answers eighty-one issues with systematic intent.
• Concentrating the pulse at the cunkou is the Nanjing’s decision, not the Neijing’s.

Cunkou 寸口 The segment of the radial artery at the wrist where the Nanjing concentrates pulse examination. Choosing it as the sole site simplifies a procedure that earlier texts had distributed across several regions.

What the Shennong Bencao Jing is, and how its repertoire is built.

The Shennong Bencao Jing is the first materia medica the tradition handed down as a book. It records three hundred and sixty-five substances of plant, mineral, and animal origin, sorted into three ranked classes. Each entry is short and follows a fixed format: name, flavour, thermal quality, and a terse list of applications. The total matches the days of the year, which suggests the framework owes something not only to accumulated observation but to the correlative thinking that then ordered any body of knowledge.

The work vanished as an independent book and was reconstructed from quotations preserved in later repertoires, above all in Tao Hongjing’s work and in the great Song compilations. Hence modern editions do not fully agree: they differ in order, in the placement of some entries, and in which phrases belong to the original text and which are added commentary. It is a reconstructed historical text, not a manual of use.

• Three hundred and sixty-five entries sorted into three ranked classes.
• A fixed per-entry format: name, flavour, quality, and tersely stated applications.
• The total answers to a correlative logic, not to an empirical count.
• The book was lost and reconstituted from quotations in later works.

Bencao 本草 “Roots and herbs”. The name of the materia medica genre in China. It designates a kind of book — descriptive and classificatory — and names a whole bibliographic tradition running into the nineteenth century.

What actually lies between the third century and the edition in your hands.

Almost none of the great Han books arrived by continuous copying. The best-documented case is Zhang Zhongjing’s: his work scattered after his death, was gathered and rearranged by Wang Shuhe in the third century, and only in the eleventh, when an imperial office of the Song set about correcting medical books, took the two-work form read today. Between author and edition there are at least two editorial layers, each with its own criteria and interests.

For the Shennong Bencao Jing the procedure was different: there was no manuscript to rescue, so scholars extracted the quotations scattered through later works one by one and recomposed the text. The method has its own name, jiyi, and yields uneven results, because whoever quotes does so partially and sometimes adapts. An honest edition states where each fragment comes from; a popularizing one tends to present the result as though it were the original.

• Zhang Zhongjing’s work passes through Wang Shuhe and the eleventh-century Song editors.
• The split into two books is a later editorial decision, not the author’s.
• The Shennong Bencao Jing was recomposed by jiyi, out of others’ quotations.
• Always check which edition you hold and what it declares about its sources.

Jiyi 辑佚 The reconstitution of a lost work by gathering the quotations other surviving books made from it. It can recover vanished texts, but the result depends on what others chose to quote, and how faithfully.