For example, the fourth author of core journal papers or even the fourth author of international academic papers has high academic value, and the writing process involves a lot of experiments and data analysis, which is difficult for one person to complete, so most of these papers are co-authored, and it is very difficult to write and publish these papers.
It is not easy for ordinary authors to participate in these projects, which shows that the authors themselves have high scientific research ability and can participate in the scientific research of these projects, so they can play an obvious role even if they are not the first authors.