Under the heading are the first, second, third and author, usually in the order of contribution. The completion of a paper is usually completed by many people, and the main participant in a scientific research paper is the author of the paper. The more advanced you are, the greater your contribution to this article. Among all the author positions, the most important are the first author and correspondent. The first author is the first and the person who contributes the most to the article. Journalists' foreign periodicals are the last.