I Came from the Mud

This is a time-travel story. A modern person traveled back to the time of Dayu more than 4,000 years ago, crawled out of the burial pit, and witnessed the whole process of Dayu's flood control and establishment of the Xia Dynasty. His name is "Ni", which is the name given to him by Yu. Because he crawled out of the mud and grew out of the ground. This story is about his life. It was also the life of Dayu. It was also the life of countless people in that era.