The online historical map of Qian Yan (366 A.D.) and Qian Qin (370 A.D.) in the Sixteen States period of the Eastern Jin Dynasty comes from the first volume of the Atlas of Chinese historical manuscripts, edited by Guo Moruo. The scale of the map is 1:9 million, and the main marks in the map are: historical map of Qian Ya and Qian Qin.
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