Since the beginning of this century, a number of works on classical bibliography have been published. Famous ones are Yao Mingda's History and Bibliography of China, his Introduction to Bibliography, Wang Bijiang's Bibliography Research and Jiang's Bibliography Outline. In 1930s, Yao Mingda compiled a variety of bibliographic documents by using the collections of libraries in Beijing, Hangzhou and Shanghai. On this basis, it was compiled into China Bibliography and Bibliography History. The former is divided into three chapters: principle, history and method, which not only answers the questions of what is bibliography and its classification, cataloging and indexing, but also discusses the origin of bibliography and its evaluation of ancient cataloguers. The latter is the expansion of the former's historical chapter. Yao Mingda thinks that in the history of bibliography in China, the spirit of the times is hardly different. Therefore, this book does not take the times as the key link, but discusses the development of the history of bibliography in China in detail, including theory, traceability, classification, constitution, proofreading, historical records, religious catalogue, special record and introduction, so as to make its origin complete. He thinks that the biggest feature of China's bibliography is that it re-classifies but neglects cataloguing, with abstracts but no indexes. He advocated subject catalogue and elaborate abstract, making bibliography the most popular common sense known to everyone. Yao Mingda believes that "the purpose of bibliography is to compile complicated books into a concise catalogue, so that readers can find books according to the catalogue and study knowledge from books". The purpose of bibliography is to make the catalogue the most complete, understandable and convenient, so that everyone can learn with it. His view on the role of bibliography is a step forward than the previous view that bibliography is only for studying ancient catalogues. He made a serious study on ancient bibliography and bibliography, and evaluated their achievements and shortcomings realistically, especially on Liu Xiang and his son, Zheng Qiao, Zhang Xuecheng and others. For example, Zhang Xuecheng's achievements in bibliography, he said, "Most of them have their indelible bibliography value", "It is really admirable to discuss the catalogue in this realm". His research on Buddhist bibliography is systematic. On the basis of textual research and comments on Buddhist bibliographies of past dynasties, he believed that Wei and Jin Dynasties were the initial period of Buddhist records, the Southern and Northern Dynasties were its founding period, the Sui and Tang Dynasties were its heyday, and it gradually declined after the Song Dynasty. Yao Mingda's other viewpoint on bibliography research is to link bibliography with related disciplines. He believes that proofreading, library science and philology are the basic knowledge of bibliography, ethics, history and word retrieval are the auxiliary disciplines of bibliography, and education, China literature and textual research are the related disciplines of bibliography. In a word, Yao Mingda's two bibliography works are the most accomplished and informative research results since this century. Yu Jiaxi's "Introduction to Bibliography" was a textbook for teaching Bibliography in the Beijing Normal University from 65438 to 65438. He made a systematic study on the significance, function and origin of bibliography, the evolution of catalogue types in past dynasties and the catalogue system (title, description, preface, edition, preface and postscript). He believes that "to cover the meaning of bibliography in our country means to distinguish academic chapters and examine the source in the mirror" Whether bibliography can realize the academic research on the origin of chapter identification and mirror examination depends on the quality of each component such as title, description, preface and edition. Yu Jiaxi pointed out the title "So the Origin of a Book"; Narrating "so the origin of a person"; The preface, "Therefore, examine the origin of a family", is an indispensable part of all. In particular, the narrative (abstract) "It is best to have problems with the cataloging bibliography." He also took the existence or absence of abstracts in ancient bibliographies as the standard for dividing the nature of bibliographies. On the basis of inheriting predecessors' experience, he proposed that the abstract must focus on the author's behavior, the author's era and the author's academic, because the author is related to the content and quality of the book. Only by writing the abstract well can we "make the readers of the book want to treat him as a human being, and the highest one will be promoted and the second one will be fascinated by the past." Where is the connection of his life experience, and his arm is pinned down? Scholars only have a general idea, and then they have tested it in their books, where is their will, beyond the surface of language and writing, and get a glimpse of its depth. According to the bibliography compiled by Liu Xiang and his son, Yu Jiaxi thinks that the preface has the function of "distinguishing chapters and studying the original", and "the three are not prepared, and the function is incomplete". In addition, Yu Jiaxi thinks that bibliography has developed to a certain stage, and cataloging, proofreading and edition are a family study. He said: "In the past, Liu Xiangfeng wrote a letter to proofread books. The book he made was the second title, the second in the book, and the books other than Chinese books were combined by several books. Most of this book is mistaken for one, and then the author's behavior and intention to write the book are described. At that time, there was no engraving, and the so-called books other than Chinese books were cabinet books and folk engravings after the Song Dynasty. If it is true, then catalogue, proofreading and edition are also a science. Research on Wang Bijiang's Bibliography was first published in 1934. In the preface, he said: "The origin of bibliography, the gains and losses of division and integration, the mutual investigation with official and folk records during the restoration of the Han, Wei and Six Dynasties, and the classification of series after the Song, Yuan, Ming and Qing Dynasties, the most difficult and important one of the so-called bibliography, is suddenly ready. "The book discusses the achievements and characteristics of bibliography in different periods according to several stages of historical development. He believes that bibliography "compares the gains and losses of six arts and four arts, based on ancient and modern academic mail and inner spirit." "The use of the heart. The purpose of this bibliography is also. Show the way of doing research, start the rules of recording, from the capital of knowing everything to the help of mentioning mystery. The last section of this bibliography is also ". His bibliography research still pursues the aim of Jiang Inheritance and Zhang Xuecheng's "distinguishing chapters and studying the origin of mirrors", and puts bibliography into the category of proofreading, discussing the cataloging history and contents of proofreading bibliography. He summed up the debate about catalogue and textual research since Ganjia, and thought that textual research in a broad sense includes collation, cataloging, edition, compilation, identification of forgery and so on. And Zheng and Zhang's so-called textual research is actually more important than bibliography. "After the middle of Qing Dynasty, after extremely developed collation, bibliography has been self-generalized. After the introduction of western book classification and the rise of domestic libraries, bibliography and narrow proofreading parted ways and became a vassal country. " Jiang believes that the contents of proofreading bibliography include collecting books, proofreading words, setting chapters, writing narratives, finding lost books, distinguishing fakes, classifying books and cataloging. Other monographs on classical bibliography include Du Dingyou's New Meaning of Collation (1930), Zhang Shunhui's Wide Collation (1945), Zheng's Bibliography of China History Department (1933) and Qian Yaxin's Bibliography of China History Department. Liu Jize's Introduction to Bibliography (193 1), Zhou Bibliography (1935), Bibliography (1933) and Cheng Bibliography Series (65438+). These works have made beneficial research on the definition, research object, history, content, significance, relationship with other disciplines and compilation methods of bibliography from different aspects. The monographs published since 1949 include China Bibliography Series (1984), An Introduction to Classical Bibliography by Lai Xinxia (198 1), and China Ancient Bibliography Outline by Luo (1984). History of Bibliography in China edited by Lu (1984), Introduction to Bibliography edited by Wuhan University and Peking University (1982), Bibliography edited by Qiao (1986). In addition, in order to deepen the research of bibliography and truly become the knowledge of reading and learning, some special bibliography works have appeared, such as Catalogue of China History Books edited by Chen Bingcai (1984) and China Literature Bibliography edited by Xie Zhuohua. Some documents of philology, edition, collation, cultural history, academic history, book history and other disciplines have also given some research on classical bibliography.

To sum up, in view of the long history of China Bibliography and its important contribution to the development of Chinese civilization, bibliographers and scholars from other disciplines spoke highly of the excellent tradition of "distinguishing chapters and examining the origin of mirrors" in classical Bibliography, and conducted many beneficial studies and discussions. Their research work, whether systematically discussing the history of the occurrence and development of bibliography in China, expounding the achievements and characteristics of bibliography in various historical periods and the thoughts and contributions of bibliographers, or discussing the guiding role of bibliography in reading, scholarship and scientific research, and studying the system, types and bibliographic compilation methods of bibliography, aims at trying to establish China's leading position in the world bibliography research history, inherit the rich heritage and excellent tradition of bibliography, and carry forward it in the academic development history of China culture.