The Xiadu or Lower Capital of Yan (Chinese: 下都; pinyin: Xiàdū) was one of the capitals of Yan during the Warring States period of ancient China. Xiadu may have been the largest city in the world from 400 to 300 BC, with an estimated peak population over 300,000.
The Xiadu or Lower Capital of Yan (Chinese: 下都; pinyin: Xiàdū) was one of the capitals of Yan during the Warring States period of ancient China. Xiadu may have been the largest city in the world from 400 to 300 BC, with an estimated peak population over 300,000.
Source: Wikipedia "Xiadu" · CC BY-SA 4.0
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