There are no punctuation marks in ancient articles, and readers must mark the places where they should pause with circles and dots according to the meaning of the text. A complete sentence is followed by a circle (. ), generally use a dot (,) at the pause, and use ","at the slight pause. Later it gradually developed into punctuation marks in modern Chinese.
Sentence: Sentence, punctuated with "."; Reading: the sound Dà u is the same as "tease", and punctuation is ",".