The study of philology has the characteristics of paying attention to the use and expression of language, the standardization and aesthetic feeling of language, studying language from a literary perspective, paying attention to historical documents and interpreting cultural classics. Philology is an independent discipline, which is used to annotate the classic works of ancient cultural heritage, such as politics, history and literature, so that people can read ancient books. Generally, it includes philology, exegetics, phonology, collation and so on. , is a general term for studying language and writing from a literary perspective.