I think you're making the wrong distinction here, it's not about whether the result came from a known or unknown paper mill in that country. It's about whether there is a culture of fraud and fakeness that permeates that country and that scientific community. And there is certainly a culture of fraud and fakeness in China, from tofu dreg buildings, to fake food and gutter oil, to drugged olympic athletes, to fudged economic numbers.

Let me give just one example of how prevalent the culture of fakeness has pervaded through China. Nowadays, because the economic decline, people are eating out less, and restaurants are getting less and less traffic. Therefore, they needed to cut costs. So some restaurants started using pre-packaged food, and just heat those up in the microwave and serve them up as cooked dishes. Because other restaurants couldn't survive without doing the same cost-cutting behavior, they've all started doing the same things. Thus, most restaurants in China are now serving pre-packaged food. And there's a backlash from consumers, so now even less people eat out. And then restaurants started using expired pre-packaged food. Oh, and because expired pre-packaged food has a tendency to cause diarrhea, some restaurants in China have started adding Loperamide into the dishes to prevent diarrhea.

Fake it until you make it out of China mentality.