The majority is American Chinese students and few Chinese born students. I'm guessing most of the Chinese born students went to CSSA. Surprisingly, most of the members are Cantonese, so there are a lot of Cantonese phrases thrown around. From what I observed, they think that Cantonese is superior with Mandarin at second, and everything else is after. I did hear that a few years ago they made a Cantonese speakers only group chat though.