The small point of the paper is the period. A period, a punctuation mark, is in the form of ".",which means "."in English. Punctuation used at the end of a statement. Period (. ) or a period (. ) is a punctuation mark used at the end of a statement. The time used in the article is:

Pause at the end of the statement, with a period. " ;

At the end of a soothing imperative sentence, a period is also used. " ";

It can also be used in sentences with more complete meanings. " ";

In some cases, a period can also be used at the end of a soothing rhetorical question. "A period indicates the end of a sentence and the beginning of a new sentence, reminding readers that the expression of this sentence is over. Western-style period; (British English: period; American English: A period is also called a period. Western-style periods are different from ellipsis in Chinese.

The point in the text of the paper should be pause, while the point in the reference is the origin.