To put it simply, exegetics is a science to explain the meaning of ancient books, especially in the pre-Qin and Han dynasties, but it will be expanded in the future, and it will also involve the interpretation of common sayings and loanwords since the Han and Wei Dynasties.
Don't talk about the main study, just look at the catalogue of a book.
Function: it is helpful to Chinese teaching, especially classical Chinese teaching; Contribute to the collation of ancient books; Contribute to dictionary compilation; It is helpful for historical research, traditional Chinese medicine research and other research involving all ancient documents. "All ancient documents should use exegetics as a research tool."
Don't say how to study, read books by Guo Zaiyi and others.
Exegetics used to be brilliant, but now it is revived with people's re-understanding of Chinese studies.