Recent archaeological excavations at the site of the ancient Stone City of Houchongzhai, located in Qingshuihe County in the Inner Mongolia Autonomous Region of China, have revealed significant new details about its sophisticated three-level defensive system.



Dating between 4300 and 4500 BC, duri

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Liangzhu , Zhejiang , China , Yangshao , Henan , Inner Mongolia , Nei Mongol , Mongolia , Qingshuihe , Jilin , Longshan , Anhui , Chinese , , Stone City , Qingshuihe County , Inner Mongolia Autonomous Region , Early Longshan , Stone Age , Chinese Academy ,