Well, I was talking about the Chinese students who come to the US to study. I gave a couple lectures in China, but never taught a formal course.
One thing that stands out though: I was told beforehand that the audience would have an excellent command of English. That turned out to be absolutely false. A translator was needed and, even so, I think hardly anyone understood me. I still got applause though, I’m sure out of politeness.
I’m not surprised. Even in Hong Kong the people use more Chinese, than English.
The cheaters we encountered were all located in mainland China proper. I’ve had only good experiences with Chinese immigrants to the US - hard working, honest and intelligent.