It's a pattern that I happen to find every time I do a little research into any subject in biology or do a bibliometric analysis

For example: I search bacterial nanowires to see if I can find their electrical properties and I find this:
>https://www.sciencedirect.com/science/article/pii/S0092867419302910
>FengbinWang, Yangi Gu, Cong sheng
>https://pubs.rsc.org/ko/content/articlelanding/2011/sm/c1sm05611e/unauth#!divAbstract
>Kar Man Leung, Qiuquan Guo, Yuri Gorby, Jun Yang
>https://www.sciencedirect.com/science/article/pii/S0092867417307109
>Dong-yeon D.Lee,Jintao Liu
Now I search microbial fuel cells
>https://www.sciencedirect.com/science/article/abs/pii/S0378775309011744
>YingzhiZeng,Yeng Fung Choo, PingWu
>https://www.sciencedirect.com/science/article/abs/pii/S073497501830082X
>Ming Li, Xiaoyu Tian, Tingyue Gu
>https://www.sciencedirect.com/science/article/abs/pii/S0960852410011946
>Hsiang-Yu Wang, Chih-Yung Huang, Duu-Jong Lee

And so on and so on with other subjects. And I know that if I were to do a bibliometric analysis of any of these I would surely find that the chinese authors are really prominent to some degree in comparison with let's say french or or german authors. Yet many times I also happen to find in those analysis that China doesn't tend to be the main source of those papers but that it's rather the US and Europe.

Now I'm not expert in Asia to say if those are actually vietnamese or Cambodian names or if this happens in other fields too. But that's why I'm asking here, maybe someone that actually works in research knows what is really going on.