For a Ph.D. in chemistry I assume? Trust me, there are plenty of Chinese (in chemistry) at just about any US University you want to go to.
The loneliness wears off in about 1 week. Then it gets exciting because it's a new place with new people. Then, you're too busy to feel lonely. Before long you've done your Ph.D. and it's sad to leave. You'll feel like you can't return back to your homeland because you've been Americanized.
Then when you go back home, it won't even feel like home anymore. But you won't care, because you'll be wearing your Trump hat and T-shirt and you'll be making it rain dollar-dollar bills