従楊玄操文的片断看『明堂経』在唐代的流伝状況 : 以『医心方』和『外台秘要方』等文献為線索

摘要

In this paper, two sections in scroll 2 of the Yixin fang by Yang Xuancao and Yang Shangshan are analyzed by focusing the comparison on two points : (1) How the Mingtang jing as a work on acupuncture and moxibustion is seen by two professionals of the Tang Dynasty in this field and (2) How they view the standpoints of other schools as recorded in the Yixin fang towards the Mingtang jing. The viewpoints of the other schools are also recorded in the Yixin fang, demonstrating the variety of approaches to acupuncture and moxibustion, as well as the breakthrough over the Mingtang jing. Through a careful study of the biography of Yang Xuancao and the relationship between Yixin fang and Waitai miyao fang, the fragment of an important treatise was identified, which has to be from the lost Mingtang yinyi by Yang Xuancao. This fragment was analyzed to reveal features of this lost work and to lead to the following proposition : Yang Xuancao seemed to be making far less effort annotating the Mingtang jing but rather concentrated on working on the Mingtang yinyi in which he took a completely different stance towards the taboo connected with moxibustion, which are in conflict with those put forward in the Mingtang jing. The reasons for this might be that he realized that the Mingtang jing had to be updated with respect to the social developments since the period of the Six Dynasties. So he integrated the viewpoints of the other schools into his Mingtang yinyi and attempted to expand the Mingtang jing. From this it is possible to gain some insights into the range of distribution the Mingtang jing enjoyed during the Tang dynasty.