[Exploration on the mother edition of Wang Bing's annotated Su wen (Plain questions)].

According to Wang Bing's preface, when arranging Su wen (Plain Questions), he applied different editions of the book. But, he didn't indicate which edition was applied as the mother edition. By analyzing materials from Wang's preface, newly produced Plain Questions, etc. though the mother edition he used was based on the edition of the Liang dynasty, it was not the edition of Quan Yuanqi, but a clandestine edition of Master Zhang. Some of the chapters and texts of now extant Plain Questions editions should be the old original of the mother edition. The mother edition, Quan Yuanqi's edition, Zhen jiu jia yi jing (A-B Classic of Acupuncture and Moxibustion) and Tai su (Extremely Plain) are derived from different editions.