Local informations of China.
Chongqing is the municipality under the central goverment, national central city, manufacture center, finance center, and largest city of upper yangtze river.
Chengdu is the capital of Sichuan Province, largest commercial center of western China.
Xi'an fomer named Chang'an in ancient times, where the starting of old silk road link China and the Europe. Nowaday Xi'an sitll the commercial and cultural center of northwest China. It's historical glory attract tens millions of people from home and world visit here every year.