Xia Dynasty is the first hereditary dynasty recorded in Chinese history books. It is generally believed that the Xia Dynasty was a country in the form of tribal alliance. The "Family World" in Chinese history began with the establishment of the Xia Dynasty, which pioneered the hereditary throne of China for nearly 4000 years. From Tang, Yu to Xia, Shang, and Zhou dynasties, emperors and vassals ruled separately. After Dayu successfully controlled the flood, he divided the world into nine states: Ji, Yan, Qing, Xu, Yu, Yang, Jing, Liang, Yong, casting nine tripods as symbols of national power, so Jiuzhou became
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