As mentioned above, Huangdi Neijing is neither a temporary work nor a one-man work, but a summary of many medical works before the Warring States Period. This can be proved not only by the fact that Suwen and Lingshu are 8 1 each, but also by the fact that Huangdi Neijing quotes a large number of ancient documents and Suwen and Lingshu quote each other.
There are about 50 kinds of ancient documents quoted in Huangdi Neijing, among which the titles and contents have been basically preserved, namely, following five styles, forbidding clothing, pulse degree, storing in this place, extrapolating from the outside, five colors, jade machine, nine needles theory, heat theory, diagnostic classics and so on. There are eight kinds scattered in the literature, such as acupuncture, disease, Tang Ming, traumatic meridian, Xia Jing, big pulse, pulse diagnosis and pulse pulse pulse. Only the titles, Beneficial Capital, Qi Heng, Qi Heng, Bibei, Jingui, Calm, Wuzhong, Wu Guo, Side, Shangxiajing, sixty poems, pulse changes, pulse changes. As for quoting ancient documents by means of "refined speech", "economy", "argument" or "so-called"