Cao Yingfu is an early twentieth-century expert in the Chinese medicine field of Cold Damage studies. This is a collection of his case histories using Chinese herbal medicine and Classical Formulas as well as essays and commentaries on those cases.
Up to now, there has not been much published in English on Cao Yingfu, but his Jing Yan Shi Yan Lu (Records of Experiences with Classical Formulas), as well as his commentaries on both the Shang Han Lun and Jin Gui Yao Lue, were extremely influential on a whole generation of Chinese medicine luminaries, including Qin Bowei (whose personal reflections of Cao as a teacher are translated here), Jiang Zuojing (who was instrumental in collecting these case histories, comments and records) and Liu Duzhou himself.
What is almost unique in Cao's writings is how he shares his intimate thought processes regarding diagnosis, differentiation, and choosing a formula. More, he goes beyond that and shares his doubts and trepidations when handling a particularly difficult case, and why he ultimately selected the approach he used.