IN the period known as the Northern and Southern dynasties, China remained divided into north, the valley of the Huanghe (Yellow) River, and south, the valley of the Changjiang (Yangtze) River. In...
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IN the period known as the Northern and Southern dynasties, China remained divided into north, the valley of the Huanghe (Yellow) River, and south, the valley of the Changjiang (Yangtze) River. In...