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Keywords from Image Description:
Weishui. en The map shows the Wei River in Shaanxi China as it flows eastward towards the Yellow River It is from the Shui Jing Zhu or Commentary on the Waterways Classic The map is probably from the Three Kingdoms period third century AD Map from Shui Jing Zhu My photo of map by Sang Qin third century AD revised by Li Daoyuan