>Students from China were singled out by many faculty members interviewed. “Cheating among Chinese students, especially those with poor language skills, is a huge problem,” said Beth Mitchneck, a University of Arizona professor of geography and development.
https://www.wsj.com/articles/foreign-students-seen-cheating-...
and the second quote is anecdotal. it might be easier to spot the cheater who doesn't write english well if their papers are obviously better written than the student speaks.
it would simply be more difficult to catch cheaters who speak and write english fluently.
it's possible that chinese students cheat more in school, even a significant amount more, even their style of cheating may be drastically different, but I still find it somewhat strange that that gets so much focus in a system that is like what cycling used to be:
https://www.cleveland.com/metro/index.ssf/2017/02/cheating_i...