In majoy cities such as Beijing, Xian, Shanghai, from Mar.to June; from Sep. to Nov. is the best season in China. Some cities in Yunnan like Kunmin, Lijiang, Shangerila, the whole year is like spring. For Tibet tour, May-Oct, is best season, for Yangzte Cruise , Sep. &Oct. is high seasons and if for resoult to Hainan winter is high season, and for skii, also it is winter to go to Harbin. As China is a very large country, before you start your travel, according to your travel theme, first you\\\\\\\\\\\\\\\'d better search for some travel information on some website such as chinatraveldepot.com and decide your travel destimations.