Rhetoric angle includes positive expression and side expression. The positive expression of characters' appearance and scenery description in narrative and the straightforwardness in argumentative are all positive expressions of language. Sideways express the description of characters in narratives, and attack by innuendo in argumentative essays.

Figureofspeechrhetoric, that is, text or decorative text. "Xiu" means modification, and the original meaning of "word" is the word of debate, which was later extended to all words. The original meaning of rhetoric is to modify speech, that is, a language activity in which various language means can be used in the process of using language to get the best expression effect possible.