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City Profile---- Dongying

author：Dong Subei
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Previous: There was a "extinction" crisis in China, the national population was less than 7 million, which was less than the Stone Age, the difficulty of household registration statistics at the end of the Eastern Han Dynasty and the chaotic number of hukou in the Three Kingdoms at the end of the Han Dynasty, the scene and reason for the sharp decline in population from the end of the Eastern Han Dynasty to the beginning of the Three Kingdoms
Next: Wu Xiaoliang: The quietest sea