It is said that before the ancestors governed the water, they divided the Middle Earth into nine states, namely Ji, Yan, Qing, Xu, Yang, Jing, Yu, Liang, Yong, and Jiuzhou. Each state is extremely vast. The size of a state is so big that it is impossible for ordinary people to complete it in their lifetime. After controlling the water, the sea turned into mulberry fields, and many lands became the seabed, and the area of the Middle Earth also shrunk for a lot of time. This world trend, long-term unity will be divided, and long-term division will be combined. After thousands of years, people only call the land under their feet Shenzhou. On this day, the land of China can be said to be a gathering of heroes, with war, peace, stability, and chaos.