Throughout the traditional medical documents, the name of Tri-Jiao firstly appeared in Huang Di Nei Jing, then in Nan Jing, which subsequently described Tri-Jiao in details, but the content of the Tri-Jiao mentioned in it was just in name but intangible, which had caused controversy nearly in the following thousand years. Afterwards, offering their own views, continuously physicians developed and perfected the Tri-Jiao theory and attempted to come to an agreement. But the understandings of Tri-Jiao demonstr...