Generally, when labeling published papers and works, you need to explain the words "tied for the first author" and "equal contribution" and "same contribution", and then explain in detail the chapters and parts you are responsible for. There is no difference between grading and evaluating professional titles.

It should be noted that there is a rule that the first author only recognizes the first order. It means that when the author of the paper countersigned, although they tied for the first author, in some places only the first one was adopted.

Extended data:

The first author is different from the correspondent and creative contribution, and the correspondent often acts as the most authoritative person in the field of papers. Foreign tutors still value the first contributor (generally, whoever writes a paper is the first).

For the signature of scientific research papers, each journal has more detailed provisions; However, when the paper signature is used to evaluate professional titles, the weight of the first author is obviously heavier than that of the second and third authors, but lighter than the personal signature. Due to the complexity and diversity of scientific research, for example, hundreds of people sign a paper in bioinformatics.