Many authors * * * have completed the research of the subject and written and published sci papers, all of which have their own contributions. Signing the second author of sci papers is of course useful, but whether this purpose meets the personal needs of the second author depends on the prescribed evaluation requirements.

By default, the authors of sci papers are signed according to each author's contribution, that is, the higher the author's signature, the greater the weight. The second author of sci papers has a very good position compared with the authors with lower signatures, such as the third author and the fourth author, but has a better position compared with the second author, namely the first author and the correspondent author.

Sci papers are a very good way to score points for evaluating professional titles, but the title unit limits the scope of sci authors. In other words, participants who publish sci papers may lose extra points because the author's position does not meet the requirements of professional titles. Generally speaking, most professional title units recognize the first author and correspondent author of sci papers, and a few units may include the second author or even the third author in the recognition scope.