one

Note 1 is an explanation of the details in this article, which is listed separately in order not to affect the length.

Citation refers to quoting other people's opinions in the paper, respecting intellectual property rights and being irresponsible, so it is marked.

Reference refers to the literature learned in the writing process of this article.

two

Footnotes are used to mark the order with symbols and explain the meaning of a word or a person, that is, comments. The words or names explained by comments are at the bottom of this page. Footnote is a sequence symbol.

three

Comments are generally placed in explanatory positions and expressed in brackets. Quotations are numbered in the middle of the paper, and then marked in the footer of the page, which is also a footnote. References are listed at the end of the paper.