Pack lightly and bring casual clothing. A comfortable pair of walking shoes is essential. Bring shirts, a sweater and a jacket that can be worn in layers as needed. Shorts and jeans are permissible. China has humid summers and cold, dry winters; you should pack your bags while keeping in mind the season in which you are traveling. Definitely check on weather reports for the cities you are visiting during the week prior to your trip in order to be best prepared upon arrival.
China's electrical system operates on 220/240 volts AC, 50 Hz. Most hotels have two and three prong sockets that need specific adapters for use with U.S. made appliances. It is advisable to bring your own electric converters and adapter plugs if you will need to use electrical appliances during your tour. *Please see FAQ about plug adaptors.
Long-term travel can cause tourists to develop stomach upset; therefore personal toiletries and medications including Imodium and Lomotil are advisable additions for your list of things to pack.
Slide film and certain types of batteries are difficult to find in some areas of China, so pack plenty of these items. Print film and videotapes are available in China, but are cheapest when purchased in the U.S. Thus, it is also a good idea to carry these items in sufficient supply.
Besides credit cards and traveler's checks, bring cash because there are often occasions where only cash is accepted. Also note traveler's checks are becoming more difficult to cash in Chinese banks, therefore, have cash on hand in case of difficulties.