Chinese Government to Chinese Citizens: Behave When Traveling Abroad

This says quite a bit:

"Keep peaceful in public places, don't talk loud and avoid sticking out," said the guidelines, seen on the Foreign Ministry's Web site Tuesday.

"Don't get involved in other people's quarrels in public places," it added, a nod to the Chinese habit of gathering in large crowds to observe or even take part in others' arguments and fights.

The suggestions also urged Chinese tourists to respect local laws and not to attempt to cut corners or make threats.

"When your legal rights are violated, avoid making things worse and resolve the problem through upright channels, not through extortion or other illegal methods," the guidelines said.

Honestly, I don't recall any unpleasant incidents from Chinese tourists in America. But I'm hoping I'm around when a Chinese gentleman hacks and spits in a plastic plant at one of the airports.