The usage of single quotation marks refers to directly quoting other people's words, idioms, aphorisms, poems, etc. , including the special meaning of onomatopoeia, that is, it has another meaning or a new meaning in a specific language environment. For example, what the people urgently need is your silly emphasis, which means the same thing and attracts attention. Appellation refers to a name or abbreviation with certain characteristics that refers to something or a person in a specific language environment, that is, a nickname.

The usage of double quotation marks indicates direct reference. Express special meaning. The meaning expression of freshmen in a specific environment emphasizes the object of discussion. Represents a specific title. It refers to giving things an alias, a special name, an abbreviation of a technical term, an anniversary, etc. Negation and satire also belong to a special category.