Introduction:The "Yun Zhen Bu Tong Xin Fa"《运针不痛心法》has been a major text in the modern history of acupuncture,yet it remains fundamentally unknown to many scholars.Superficially,the book merely contains the standard exercise for training the finger force,but after a meticulous reading of the core text;a keen researcher can possibly identify several layers of theory and practical advices summarized in merely a few sentences.According to the information provided in the original introduction,this text came from a Buddhist monk who recited it to an acupuncturist by the name Jin Zhong-cai (金仲才).A copy of the scribed text was later discovered by Cheng Danan (承淡安-1899-1957) and it was subsequently published by the China Acupuncture and Moxibustion Research Society with a commentary,in 1931.