Phi Jiu Shan, Tong Jiu Ze, Ding Jiu He, Ding Kyushu
These four three-word sentences extremely condensed the main merits of Dayu Zhishui. "Nine" is extremely much to say, and it should not be stuck to real numbers. In the process of controlling the flood, Dayu opened up many barren mountains, managed many lakes and swamps, dredged many rivers, and divided management areas, so that the people could carry out normal production and labor and live a peaceful and contented life.
![The ancients divided China into nine states, which nine states? What is the name of these Kyushu today?[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)