(1) An important augment to doubt Classic of Documents in ancient scripts is that it appeared later, and it is taken it as a "pseudograph".

(2) The widespread of pirated books, pseudograph and books that caused misleading nowadays have made vicious impact on the mental health of readers.

(3) Because of many reasons, Yanzi's Spring and Autumn Annals was always looked on as a pseudograph, and its value in Chinese literary history was ignored in a long time.

(4) This paper makes some supplementary introduction to the reasons why the pseudographs are caused, and gives the author's opinion on discriminating pseudograph and how to appraise pseudograph correctly.

(5) Kongzi Jiayu (The Confucian School's Analects) is an important work for researching Confucius' life and thoughts. Taken as a pseudograph for a long time, it hasn't been well studied.