I work at an Australian university that has a good reputation in China and so attracts many Chinese international students. Possibly even 50% of the student population here is Chinese. I've personally found them to be extremely polite, courteous and easy to deal with.

The only cultural differences that get on my nerves is rubbish disposal and sometimes Chinese men seem to be a little rough with their girlfriends (It's entirely possible I'm just misinterpreting what I'm seeing). But if there is a location where a large number of Chinese people hang out, it will often be covered in trash and cigarette butts.

But I also remember a decade ago when the thing that annoyed everyone about Chinese people was constant spitting everywhere, yet that isn't really an issue anymore. So I'm sure in time our cultures will synchronize further.

Disclaimer edit: I’m slightly uncomfortable making statements like this about a particular group of people. This sort of conversation on the internet can do downhill fast. So I want to emphasise that I’m just referring to differences in culture and that I’m optimistic these differences will resolve themselves organically.