1 - If it looks like chicken... it may be something else, just in case, leave it alone.
2 - If they tell you is chicken, ask what part of the chicken or you may end up eating chicken feet or neck or something
3 - If you think the elevator or the train is crowded, don't worry they'll try to fit 10 more Chinese people in it
4 - If you want to get away from the crowds... go to your hotel room, everywhere else will have tons of people, all the time
5 - Personal space varies according to culture, a couple of inches between your face and someone else's is plenty of space for the chinese :)
6 - If you like bargaining for your purchases, China is the place for you... you can get great deals that way
7 - If you think think pedestrians have the right of way crossing on a green light on a marked pedestrian crossing, think again... cars turning into your street always have the right of way in China, so be ready to jump forwards or backwards...
8 - You can safely take a taxi in Beijing, but the driving will not be safe, they drive like crazy and they'll hardly ever know where you want to go if you give them the address... they will drive around, call someone, and kind of guess where it may be. And yes there are millions of cars on the road.
9 - They use green tea for a lot of stuff, not just beverages...
10 - If your name contains an "r" in it, get ready for a change of name, they'll find a way to make it sound Chinese... like Hen-lee
11 - If you believe in privacy and your right to disagree, China is not for you. Big brother is watching and it is obvious
10 - If you want to visit a mysterious, safe, beautiful place with lots of friendly people, proud of their culture, China is it.