In reality, due to different situations, it may happen that both authors want to be the first author, and most journals are not allowed to have two correspondent authors.

Can two correspondents appear in the same journal? First of all, we should know what the correspondent is mainly responsible for, and the correspondent is mainly responsible for the external contact of the article. In reality, due to different situations, there may be cases where both authors want to be the first author, which is best avoided.

So what should the author do in this case? First, the author can sign two authors in the article. If the newspaper doesn't allow it, they will automatically choose the first correspondent as the correspondent. The author can also write and ask why two authors are needed. Maybe the society will accept your request.