Xi'an is one of the seven ancient city in China as it has not only a long history but has been the capital city of many deudal dynasties at different times in chinese history.Xi'an is also the staring point of the ancient silk road.The city flower of Xi'an is that of pomegranate and the city tree is the chinese scholar tree.what's more Xi'an,luoyang,nanjing,beijing,kaifeng,hangzhou,an'yang are the most famous ancient city in china.