Chinese who have done/are doing their higher studies abroad, who did/do you find more comfortable and easier to socialize with - the locals (Americans in case of USA, British in case of UK) or other internationals (Indians, Persians, Koreans, etc.)?

Just asking out of mere curiosity - I'm currently studying in the States, but aside from my coethnics I tend to not interact with others (except for study/work purposes).

While I'm good at English, I find it tough to socialize with Americans for some reason.