Yang Shangshan

Yang Shangshan a court physician and medical compiler of the early Tang dynasty (flourished in the seventh century) who edited and annotated the Yellow Emperor's Inner Classic and produced an influential encyclopedic digest of earlier medical learning.

Life and Background

Yang Shangshan lived in the first half of the seventh century, during the early and confident decades of the Tang dynasty. He served as a physician in the imperial medical service and held office in the court of Emperor Taizong, the ruler who consolidated Tang power and presided over an era of prosperity, scholarship and administrative reform. Little is recorded of his private life, but his official position gave him access to the medical books preserved in the imperial libraries.

The Sui and early Tang courts gathered and copied manuscripts on a great scale, and scholars were set to collate and systematise the inheritance of earlier ages. Yang worked within this enterprise. He was not primarily an innovator in theory but an editor and a compiler of unusual care, one who sought to preserve, arrange and explain the medical texts that had survived the disorder of the preceding centuries.

His scholarship rested on a close command of the classics of the tradition and on practical experience at court. He read widely, compared versions of the ancient works, and was deeply concerned with the problem of textual corruption: the way that manuscripts copied and recopied over centuries accumulate errors, omissions and interpolations that obscure the original. His answer was the disciplined work of collation and commentary.

Editing the Inner Classic

Yang Shangshan's most important work was his edition of the Yellow Emperor's Inner Classic, the foundational text of Chinese medicine, and in particular of the Basic Questions, its first great division. The Basic Questions had reached his time in a disordered condition, its chapters disarranged and its text uncertain. He reorganised it, divided it into twenty-four scrolls and eighty-one chapters, and supplied a commentary to explain its difficult passages, its archaic terms and its theory of the body.

His edition became the standard recension of the Basic Questions, and it is through his labours that the work was transmitted to later ages in the form in which it is now known. He also produced an edition of the second division of the classic, the pivot of the spirit, together with a separate treatment of its essential teaching. These editions fixed the canon and were copied and reprinted for centuries.

In his commentary he explained the obscure language and set out the conceptual scheme of the classic: the correspondence between the human body and the seasons, the doctrine of yin and yang and the five phases, the role of the emotions in illness, and the methods of preserving health through moderation and the regulation of daily life. By making the old text intelligible he made it usable, and he secured its authority as the common foundation of the tradition.

The Great Compendium

Yang Shangshan is also remembered for a large encyclopedic compilation of earlier medical writings. The work gathered together material from many sources, including the theoretical canon, the pharmacology of the materia medica, the methods of diagnosis and the formulas and prescriptions of the classical physicians. It presents theory and remedy side by side, so that the reader can move from the principles of medicine to the concrete treatment of disease.

The compilation preserves passages from books that have since been lost, and for this reason it is valued by historians as a source for the early development of Chinese medical thought. It shows how the various strands of the tradition, drawn from different schools and periods, were welded into a single body of doctrine, and it gives a picture of the state of medicine as it was taught and practised at the Tang court.

In assembling such a work Yang aimed at completeness and at order. He classified the material, arranged it so that related topics stood together, and added his own explanations where the sources disagreed or were obscure. The result was a reference library in miniature, a companion to his editions of the classic and a demonstration of the value he placed on the conservation and clarification of inherited knowledge.

Method and Scholarship

Yang's approach to his texts was that of the textual scholar as much as the physician. He compared variant readings, noted discrepancies between versions, and distinguished the original words of the classic from the later additions of commentators. Where a passage was corrupt he sought to restore it, and where its meaning was uncertain he set out the rival interpretations before offering his own judgement.

He was careful to mark the boundary between the received text and his own commentary, so that the reader could tell what belonged to the ancient work and what was the editor's contribution. This attention to the integrity of the sources, unusual for his time, made his editions trustworthy and helped to establish the critical study of medical texts as a scholarly discipline.

His medical outlook was strongly classical. He held that health depends on living in accord with the seasons and the natural order, on moderation in food, work, rest and pleasure, and on the cultivation of a calm and balanced mind. Disease, in this view, arises when these harmonies are disturbed, and the physician's task is to restore them by understanding the patterns of the whole rather than by attending only to isolated symptoms.

Influence and Legacy

The influence of Yang Shangshan's work was lasting because it shaped how the founding classic was read. His arrangement of the Basic Questions and his explanations of its teaching were adopted by later editors and physicians, and his commentary was cited in the medical compendia of the Song, Ming and Qing. Through him the concepts of the classic entered the standard vocabulary of Chinese medicine.

He stands for the role of the editor and compiler in the transmission of knowledge. Without the patient work of collation and commentary carried out by scholars such as Yang, the ancient medical classics might have survived only in fragmentary and confused form. His editions made them coherent and teachable, and so kept alive a tradition that would otherwise have been diminished.

Later physicians honoured him as a custodian of the canon, one whose medical learning was inseparable from his literary scholarship. In the history of the field he is remembered as a bridge between the medicine of the classical age and the systematising scholarship of the Tang, a figure whose careful reading preserved the foundations on which the whole later tradition was built.

See also

• Yellow Emperor's Inner Classic
• Tang dynasty medicine
• Yin and yang
• Traditional Chinese medicine