According to historical legend, in ancient times, floods were flooded, and Dayu was ordered to control the water.
According to investigation, the flood was caused by a monster in the water, the dragon. This dragon can stir up waves in the water, stir up the water, wash away the embankments built by people, flood the land and villages, and cause hundreds of people's homes to be destroyed and displaced.
Da Yu Mingcha secretly visited, one day, came to the Yuzhou City North Guanshi Bridge, found a naughty boy playing in the water, fixed his eyes on it is the dragon changed.
It turned out that an old couple with no children and no daughters in the north of Yuzhou City took in a child who had been washed away by the water as a righteous son. This child is not interested in anything, no matter whether it is spring, summer, autumn or winter, he loves to play in the river all day. The old couple was afraid that the child would have something to lose, and every effort to dissuade them was still to no avail, so they had to come by his nature.
In order not to alarm the dragon, Dayu quietly left and secretly watched the dragon's whereabouts. When he learned that jiaolong had taken human form and was adopted by an old couple, he came to the old couple's home to talk with the two old people.
When it was noon, the old man left him to eat, and he did not resign, and the old man asked his wife to make noodles to entertain the guests.
While he was eating, the child came back from the river, and when he saw Dayu turn his head and run, Dayu picked up a noodle from the bowl and said "change", and the noodles became a thick and long iron cable and put it on the child's neck.
Da Yu shouted, "Animals, don't you want to show your original form yet!" The child suddenly turned into a dragon several feet long and as thick as a bucket.
The two old men were frightened and scattered. Dayu explained the truth to the two old men.
Then, the dragon was tied with an iron rope and imprisoned in an octagonal well.
Since then, the floods have subsided and the people have lived a life of peace and contentment.