In China, dressed quite normally, so you should not take with them something special and extravagance. For official events worth taking a jacket and tie, suit or a strict dress. It is best to use a small but capacious suitcase or bag on wheels. Prepare to what you have to often change clothes, the weather in China is variable. With film, all sorts of toiletries problems you will not. Worth taking an essential set of medicines and an extra pair of glasses (if you use glasses).