Abstract: The Zhouyi Zhengyi, Shangshu Zhengyi, Liji Zhengyi and Chunqiu Zhengyi with Yang
Shoujing’s preface and postscript are the witnesses for Yang’s books-searching in Japan. They have special
values that cannot be replaced by the records books as Riben Fangshuzhi. These books are master copies of
the single-copied edition of four Confucian classics block-printed by Liu Chenggan’s Jiayetang, which is
of great significance to know the block-printed by Liu Chenggan. However, these books collected in Fudan
University Library are obscure. And so far, no scholars has special exploration towards the four books.
The paper focus on the four books, aims to straighten out the sequence of events, and analysis of their
special values of witness of the return of ancient Chinese books and records from Japan, the heritage of the
single-copied edition of Confucian classics which have been stopped for seven hundred years, the textual
research of single-copied edition of Confucian classics block-printed by Jiayetang and the preservation of
the unpublished preface and postscript of Yang Shoujing. It is recommended that these rare books should
be photocopied and published.

Key words: Yang Shoujing, Preface and postscript, Single-copied edition of confucian classics, Values