Wang Mu (1908-92) received the Longmen ordination in his youth. He taught Internal Alchemy (Neidan) and, in his own country, was held in high regard by both practitioners and Taoist scholars. He served as a board member of the China Taoist Association and was for some time in charge of its research activities. He is known outside China mainly for his annotated edition of the "Wuzhen pian" (Awakening to Reality), the text at the basis of the outline of Internal Alchemy that he provides in the present book.