Are you in academics? If you see some Chinese is cheating on his paper. You cannot effectively prove that the whole academic people are cheating. Given the basic ratio out there. Top-schools rarely cheat(https://www.natureindex.com/annual-tables/2017/institution/a...), Tsinghua is top tier. And its graduates are welcomed by top tier schools in Europe/US or tech companies. As for cheating, there are metric-system problems in China. For instance, to be a physician in China, you will be buried in day-to-day operations, however, if you want to climb up, you will need to have essays. I am not saying those cheaters are right, they are definitely wrong, but the system need to reconfigure itself as well.