Chang also known as mei Xianshui rivers, source to screen Fu Ping Jiangxian northwest Shanxi lu Jia-dong, in Yangmei in Hong Kong to Miluo river, 84 km long, the valley area of 670 square kilometers.

昌江河又名梅仙水，源出平江县西北部幕阜山西麓傅家洞，于杨梅港入汨罗江，长84公里，流域面积670平方公里。

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Du Fu defends against a siege the Chang an ten years, is precisely the Datang prosperous times blowing up for rain time, the prosperous times surface is covering a series of social crisis.

杜甫困守长安十年，正是大唐盛世山雨欲来风满楼的时期，盛世表面下掩盖着一系列的社会危机。

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