It is "detailed exegesis and clear sentence reading".
Detailed: know clearly.
Exegesis: explaining the meaning of words and sentences in ancient books.
Ming: I understand.
Sentence reading: Ancient Chinese prose has no punctuation marks and requires readers to segment sentences by themselves. Where should there be a period? Where should the comma be? You need to mark it yourself. A complete sentence is called a "sentence" and is marked with a circle; general resting places are marked with dots. This is the period and comma used now. The ancients called "dou" "du", its pronunciation is still dòu, and its meaning is the same.
Detailed exegesis, clear sentence reading: can clearly understand the meaning of the words in the book and know where to break sentences.