You'll need a valid passport, any necessary visas, your tickets and itinerary, wallet, credit cards and traveler's checks when you travel to China. Keep an extra copy of your travel documents separate from your originals in case they're lost or stolen.
Carry prescription medications, vitamins, aspirin, antacids, sunscreen and lip balm, and diarrhea, anti-inflammatory and cold medications. Tuck a list of your allergies, a note of your blood type and any medical conditions you have safely inside a first-aid kit in case of emergency.
Pack casual clothes made of natural fibers that dry quickly, a pair of sturdy walking shoes, a sun hat, sunglasses, we- weather gear, underclothing and one or two formal outfits.
China runs on 220-volt electricity, so you'll need a power converter, an adapter plug and an electrical transformer. Also pack your cell phone (if it's set to work internationally), a digital camera, a travel alarm clock and all necessary chargers.