[Differentiate and analyses between the term "horizontal insertion of needle" and relative terms]

In Terminology of Chinese medicine, as a canonical name, also known as "hengci" or "yanpici" , "pingci" (horizontal insertion of needle) was explained that the needling method which the body of needle and the acupoint skin about 15 angle. Through literature study, this explanation was found that correspond to hengci and yanpici, and the other terms such as "zhizhenci" , "wozhenci" , "hengzhen" , "hengci" , "yanpici" , "pingzhenci" and "pixiaci" are all synonyms. However, the primary meaning of canonical name pingci in original document -Bianque Shenying Zhenjiu Yulong Jing(, The Jade Dragon Manual of Bianque on the Spirited Response of Acupuncture and Moxibustion) was completely different with the modern explanation, it means that after insertion of needles without considering reinforcing or reducing methods, only thought about "deqi" , which was the even reinforcing-reducing method in embryo, and had nothing to do with the angle of the needles. Therefore, it is worth discussing that "pingci" and its corresponding or relative terms carefully in practice.