As you might suspect, newly found rich Chinese are obnoxious, especially if they have got the dough to go touring around the world. And this article from the NT Times point that out loud and clear.
They behave as they would at home — there is a lot of pushing and shoving. Very few speak languages other than Chinese.
You can see the Chinese behaviour when they first descended to HK from Mainland China. Flashing their cash, rolexes, pushing everyone out of the way. Just being rude. And with more and more travelling abroad, I'm afraid this would generalised all Chinese people.