Yin Yang Shiyi Mai Jiujing Yin Yang Shiyi Mai Jiujing The Yin Yang Shiyi Mai Jiujing (), or Cauterization Canon of the Eleven Yin and Yang Vessels, is an ancient Chinese medical text that was excavated in 1973 from a Han-dynasty tomb in Mawangdui Han tombs site (Hunan province) that had been sealed in 168 BCE. It was handcopied in seal script on the same sheet of silk as the "Recipes for Fifty-Two Ailments" and another text on cauterization during the Qin dynasty, around 215 BCE. The text describes the pathways of eleven vessels or channels ("mai" 脉) inside the body, as well as the
Yin and yang with fire, sky, the sun, masculinity and daytime. The yin-yang symbol, having no "officially standardized" rendition, has been the basis of much artistic variation, most of it "frivolous" (that is, "merely" artistic, with no philosophical/mystical meaning, e.g., tattoos). Yin and yang also applies to the human body. In traditional Chinese medicine good health is directly related to the balance between yin and yang qualities within oneself. If yin and yang become unbalanced, one of the qualities is considered deficient or has vacuity. In the "I Ching", originally a divination manual of the Western Zhou period (c. 1000–750 BC), yin and