Okay, here is the translation following your instructions: Subject Index Research

Author: Wang Pijiang, Fu Jie
Publisher:
Publish Date: 2000-11-01
Features: This book contains six cataloging essays, all derived from lectures given to students at Central University over the years. Cataloging serves as the gateway to scholarship, and in recent times, it has been made a compulsory subject in senior middle schools and above, valued almost as much as Chinese literature. Those who hold this position often struggle to find specialized books for teaching materials. Consequently, they resort to using the Bibliography of the Book of Han or the Preface to the General Catalogue of the Four Treasuries as substitutes. The instructors, accustomed to tradition and averse to change, while the students, lost and without guidance. The purpose and utility of establishing cataloging in schools thus lose their true essence. This is a source of regret in academia.
In my view, cataloging has both essence and details: to trace the branches of the Six Arts, compare the merits and flaws of the Four Divisions of literature, externally to connect the past and present of academic knowledge, and internally to refine one's thoughts and insights. This is the essence of cataloging. To open the gateway to scholarship and establish the conventions of recording, on a grand scale, it can serve as a foundation for broad knowledge and distant achievements; on a small scale, it can assist in summarizing and extracting the essence. These are the details of cataloging.
If one emphasizes the Bibliography of the Book of Han while neglecting its context, or praises the General Catalogue of the Four Treasuries while disregarding its historical significance, or focuses on the partial while ignoring the whole, or pursues the details while neglecting the fundamentals—all these have nothing to do with the true spirit of cataloging.
The discussions in this book, though not exhaustive, cover the origins of cataloging, the strengths and weaknesses of organizing and categorizing, and the examination of official and private cataloging from the Han, Wei, Jin, and Southern and Northern Dynasties, as well as the reclassification of encyclopedias from the Song, Yuan, Ming, and Qing dynasties. These are the complex and important aspects of cataloging, which are now clearly presented. To pave the way and serve as a starting point, this is the subtle purpose of publishing this book.