6. Male-female relationships
Alas, the image of the loose American woman perpetuated by Hollywood movies is alive and well globally including in China. If a man makes unwanted advances to you, say loudly the Chinese word for "No," (bu) which is pronounced like the English word "Boo!" If you say it forcefully, it will be in the correct tone. If you are a man, don't be touchy-feely with Chinese women lest they think you are propositioning them.
7. Public displays of affection
While younger Chinese can be as openly demonstrative as Westerners, if not more so, older Chinese are not used to PDAs. Be aware of your surroundings. Around older Chinese anything more than holding hands with your partner or a quick peck on the check might embarrass people.
8. Respect for elders
It's fine to open doors and give up a seat to an older person of either gender. And don't be offended if younger Chinesemale or femaleoffer you an arm going up stairs or other assistance if you are older. They don't think you're infirm. They're just trying to be polite.
9. Smiling
Chinese smile for more reasons than Americans. A smile can mean the person is embarrassed, trying to be helpful, curious, happy or friendly. In the middle of an argument, smiling means that the speaker doesn't want this to become personal. When all else fails, smile in China. It shows you have no ill intentions and can work wonders in getting better service.
10. Tipping
If you plan to return to a restaurant, then tip. Guidebooks say not to, but in fact most Chinese know enough about the Western world to know that tipping is practiced regularly in other countries. Tips are rarely (in our experience, never) refused and create goodwill.