Xi'an, formerly called Chang'an, is one of the six ancient capitals in China and also one of the four great ancient capital cities of the world (the other three are Aden, Cairo and Rome). It served as the earlist capital and has the longest history of capital intermittently. Here we have the historic site of Lantian Apeman approximately 800,000 years ago, Banpo--the historic remains of 6,000 years ago Neolithic matriarchal clan community, the most wonderful archeological found--the terra-cotta warriors and horses of Emperor Qin shihuang. During the Han and Tang dynasty,