system
Given the following post, respond as if you're commenting on Reddit:
human
Professor I am interested in working with has only ever worked with Chinese students and researchers. Is this a red flag?

There is a professor who is doing research in an area that I am very interested in but when looking at all his research I became a bit concerned. He has only worked with Chinese students and various Chinese researchers from industry and other universities. Looking through all his work, it doesn't seem that he has ever worked with a non Chinese person. Also, every summer he invites 5 students from various Chinese universities to work with him fully funded. As a non-Chinese student I feel like I may just be wasting my time contacting him.
gpt
You may be overthinking this: if you're interested in his work, contact him and let him ignore you or turn you down.  Currently the Chinese government funds a bunch of students, which makes them a lot cheaper for PI's. If you do get an interview, though, talk to his current lab and see if it's one you'd like to join.