The research object of this article is the Dunhuang manuscript P.3021+P.3876. There are three main aspects to be discussed, the first is to analyze the difference between the contents of the two manuscripts, what is the original appearance of the Dunhuang manuscripts P.3021 and P.3876? The second is to discuss whether the title of "Daojiao Zhongyuan Jinluzhaihui Jiangjingwen" [道教中元金籙齋會講經文(擬)] is correct, by way of supplementary materials and instructions, I point out that there are many inconsistencies between the title and the contents. The final topic is about that Taoist priests how to use these story materials, contain the process of the ritual in religion, explain the contents of the classics, and why do they narrate these figurative stories. In addition, in this paper I investigate the source of the story about "Zhao Jianzi" [趙簡子].