Xi'an is the capital of Shaanxi province in People's republic of China and a sub-provincial city. As one of the most important cities in Chinese history, Xi'an is one of the Four Great Ancient Capitals of China for it has been the capital of 13 dynasties, including the Zhou, Qin, Han, and the Tang. Xi'an is also renowned for being the eastern terminus of the Silk Road and for the location of the Terracotta Army made during the Qin Dynasty. The city has more than 3,100 years of history. It was called Chang'(literally "Perpetual Peace") in ancient times. (Wikipedia)