The world's ten ancient civilizations - xi 'an

There are five continents in the world, four oceans, more than one hundred countries, and is recognized only four ancient civilizations, China xi 'an is one of them.
Xi 'an and Athens, Rome, Cairo, four big ancient capital of civilization, xi 'an has 7000 years of civilization, founded more than 3100 years history, is China's zhou, qin and han dynasties, sui and other 13 dynasties established their capitals here, as the Chinese capital and political, economic and cultural center of more than 1100 years, the ancient capital of civilization still retains many historical style and features, from China after the establishment of important cultural relics unearthed in xi 'an national and tom
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