What is China's classical philology?

China's classical philology is a subject that comprehensively applies the theories and methods of edition, collation, catalogue, annotation, textual research, discrimination, compilation and retrieval. Scientifically analyze, sort out and study the ancient documents in China, and then explore the laws of the generation, dissemination, exchange and utilization of ancient documents, and summarize the laws and methods of analyzing, sorting out and studying ancient documents. On the other hand, China's classical philology generally includes the following branches, namely, morphology of classical literature, edition of ancient books, collation of ancient books, bibliography of ancient books, annotation of ancient books, textual research of ancient books, discrimination of ancient books, compilation of ancient books and retrieval of ancient books.