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This book is a popular book on ancient book reading methods written by Chinese scholar Hu Huaichen. The main contents include: what are ancient books, why should we read ancient books, the relationship between ancient books and today's society, methods of reading ancient books, the three key points of reading "fine", "expert" and "tong", to understand the academic origin and origin of ancient books when reading ancient books, necessary reference books for reading ancient books, concepts that should be gained from reading ancient books, etc. The author has a profound foundation in traditional culture, is familiar with ancient classics and reading methods, and at the same time has modern consciousness. He has made appropriate analysis of the issues that should be paid attention to when reading ancient books. The language is easy to understand, humorous, and the examples are easy to draw. This book is short in length, full of knowledge, interest and practicality, and provides ordinary readers with the gateway to ancient classics and traditional culture.