Research on Version Appraisal of Ancient Books in China

China's ancient books have been passed down through the ages, with a huge number and a wide variety. The same kind of books have been copied many times, and the versions are complicated and numerous, which has caused many difficulties for future use and academic research. Therefore, the version identification of ancient books has become an indispensable basic research work. It is necessary to have extensive knowledge of literature and history, edition and bibliography, and long-term practical experience to engage in the edition appraisal of ancient books.