Wu Zhen is a Chinese author whose biographical details are limited in publicly available sources; all that is currently known is that the author's representative work is Shanghan Zhizhang (A Clear Guide to Cold Damage). Classified under medicine, the book deals with the identification and treatment of disorders of the cold-damage (shanghan) type and belongs to the traditional literature of Cold Damage studies in Chinese medicine. The phrase zhizhang, "pointing to the palm," suggests that the author intended to explain the key points of diagnosing patterns clearly and plainly, so that readers could grasp the main principles and match treatment to the pattern, rather than piling up elaborate theory. From the available information, Wu Zhen's writing appears practical and well organized, placing the evidence needed in clinical practice in a prominent position and reflecting the long-standing orientation of Chinese medical works toward both fidelity to the classics and service to actual diagnosis and treatment. Because the dates of birth and death, native place, and medical training cannot be verified, the author's precise place in medical history is difficult to assess, and only the surviving work offers any insight. As the only work by Wu Zhen recorded in the collection, Shanghan Zhizhang is the main basis for understanding this author's scholarly character and may also provide material for research on the transmission of cold-damage medical texts.
