Imitating Chao's "Reading Records in County Zhai", it is compiled into "The Problem of Solving Zhi Zhai", which is the second well-known catalogue of private library abstracts in China. This item was originally 56 volumes. It is characterized by solving problems, introducing the author's life, giving the general idea of each book, evaluating gains and losses, and examining fallacies. Each book records not only the title, but also the number of volumes, the author's surname and official position, as well as the academic origin or edition category. In "solving problems", a few words, or memorizing ancient books, seal cutting, or explaining the process of obtaining good books. The academic value of solving problems in Zhizhai Shu Lu is comparable to that in Reading Records of Zhai Jun, and it is regarded as a "double treasure" of ancient private bibliographies. There are 3039 kinds of books recorded in the whole catalogue, with 5 1 180 volumes, which greatly exceeds the private collections around the Song Dynasty and is not inferior to the official collections at that time. The collection of books exceeds 44,486 volumes of Zhongxing Pavilion Bibliography, that is, Zhongxing Pavilion Bibliography and Continued Catalogue added by Xiaozong later. It is not difficult to imagine his contribution to the collection of ancient books and the value of the books he wrote, because he can consult and study so many and so extensive ancient books in a private collection. Another outstanding feature of the book catalogue is that it can reform the book classification according to the actual situation of books at that time. His book classification inherited the tradition of the past catalogue, followed the old categories, but made some innovations, and set up new categories such as language, history, imperial edicts, decrees, seasons, music and so on. Most of these categories were imitated by public and private catalogues after the Song Dynasty. Shu Lu in Zhizhai has rich and clear problem-solving content, or describes the deeds of characters, or explores the academic origin, or researches the gains and losses of authenticity, and pays attention to the classic version and style. As can be seen from the problem solving, he briefly recorded the publishing time and place of many ancient books, not only recording the characteristics of Beijing edition and supervised edition, but also recording the manuscripts and rubbings.
Most of the books recorded in this project have been lost since then. According to "solving problems", it provides valuable information for the textual research of ancient books and plays a guiding role in the academic origin of Song Dynasty. Originally lost, it is now sorted out by later generations from Yongle Dadian, with a total of ***22 volumes, which are divided into 53 categories, 3096 species, 5 1, 654,38+0,80 volumes. It is more than the number recorded in the official catalogue "Zhongxing Pavilion Bibliography" in the Southern Song Dynasty. It has a far-reaching influence on later generations and has an important contribution to enriching the contents of classical bibliography. On the basis of Chao He, Duan Lin wrote A General Examination of Literature.
In the process of circulation, the book Zhi Zhai Shu Lu Solve Problems has not been completely preserved. In Qing Dynasty, Four Treasures of the Study officials compiled only 22 volumes from Yongle Dadian. On this basis, Shanghai Ancient Books Publishing House absorbed the collation results of Lu in Qing Dynasty and published a more practical edition. Although the book Zhi Zhai Lu Shu Jie Puzzle is incomplete, it is still valued by Lin Xue. The general catalogue of sikuquanshu concludes: "those who don't pass on ancient books today, borrow their cliffs;" Today's biography can distinguish its authenticity and check its similarities and differences. Those that are also verified must be funded and cannot be abolished. " ①