The rule is to pack lightly, and bring casual clothes. A sturdy, comfortable pair of walking shoes is a necessity. A sports coat and a nice shirt for man, and one or two dresses or pantsuits for women will suit the most formal occasions to be encountered in China. Travelers should bring shirts, sweaters and jackets that can be worn in layers to suit a range of climates. Shorts (for both men and women) are fine for summer days though not recommended when visiting religious shrines. Remember, dress for Comfort, not for Style.
Checklist: Electrical converter and adapter plugs. China's electrical system operates at 220 volts. Razor, alarm clock.
Common toiletries, cold and digestive medications, lip balm, sanitary napkins and any over-the-counter medicines you generally use.
Chewing gum, mints or throat lozenges to keep your mouth moist.
Reading materials, including a guidebook on the places you will visit.
Sunscreen lotion and sunglasses.
A light raincoat or an umbrella.
Camera & film. And be sure to pack extra batteries and a charger.
A notebook to keep track of all the exciting things happening on the trip.