August 31, 2007 12:30am CST
xi,an and athens, rome, cairo and called the world's four major ancient capitals, from the 11th century BC to the 10th century AD,a total of 13 dynasties in xi,an regime or the agreement and the establishment of regime lasted 1100 years. in 1981 the united nations education and culture organizations to determine the world's xi'an coty.
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