Non-English Speaking Students

Why does this uni genuinely have so many non-English speaking students??? Not to mention where they're from, but most of them happen to be Chinese based on my personal experience. To add to that, I had OB(MGMT20001) and groups were assigned by the tutor. One groupmate came in to class with nothing but his phone and immediately pulled up Google Translate to talk with us and even translated the slides?? I have talked about this issue with some friends and even academic staff and they said there's nothing they can do. I just wanna know how you guys deal with this.