Those of us on this expat forum who are actually real foreigners (and no the fake accounts) would normally say things like "Xin Nian Kuai Le", or "Sheng Ri kuaile",  or even "Zhong qui jie kuai le" as appropriate to the various people around us (work colleagues, friends, maybe even at the shops and bars we frequent).

Do you get this in return - such as having the locals say (in English) "Happy New Year" etc?

I have had a few "Merry Christmas" from friends and colleagues (usually English teachers) on wechat, and at the expat bar that I hang out in... but the local shops etc... nothing! (although, some do try "Xin Nian Kuai Le", and I might get that over the next couple of days.

Have you ever been shocked by a "Feliz Cumpleanos" or similar??