１９３６年９月，向达赴英国伦敦阅读敦煌卷子，描述了他亲见的《灸经图》，记入《伦敦所藏敦煌卷子经眼目录》：Ｓ·６１６８铜人针灸图。另Ｓ·６２６２铜人针灸图，与Ｓ·６１６８当是一书，裂为数段。这当是中国传世最早的针灸图。 这幅图的正中、头部正上方，竖写着“明堂 In September 1936, he read Dunhuang exams in London, England, and described his “moxibustion meridian diagram” as it appeared in the London Eye Catalog of Dunhuang Examinations: S. 6168 Bronze Acupuncture. Another 6262 bronze acupuncture map, and S · 6168 when a book, split into several paragraphs. This is the earliest Chinese acupuncture map handed down. The middle of this picture, just above the head, vertical writing "Ming Tang