The Monkey King returned from his apprenticeship without a decent weapon in his hand. On the recommendation of the monkeys, the Monkey King came to the Dragon Palace in the East China Sea to look for precious weapons. Seeing that the Monkey King was powerful, the Dragon King of the East China Sea naturally dared not neglect him, so he showed all the precious weapons in the Dragon Palace to the Monkey King. Some in the Monkey King looked at it and said no, others took a trick that was too light, so the Dragon King led the Monkey King to the place where the anchor needle was. The Monkey King saw this monster's precious weapon and liked it very much. He stuck the anchor needle so big that he was about to poke a hole in the sky.
Then the Monkey King turned the anchor needle into a weapon the size of a stick, and held it in his hand to play, which was a good weapon to weigh his hand. The Monkey King was so happy that he played regardless. The Dragon Palace in the East China Sea was disturbed by the Monkey King. In order to send the Monkey King away as soon as possible, the Dragon King of the East China Sea gave the Monkey King a suit of clothes. The Monkey King was so happy that he went to Huaguoshan water curtain cave to show off his precious weapons. The Dragon King of the East China Sea has no anchor needle, and there is nothing he can do for the Monkey King, so there is no way to talk about his suffering. Dinghai Shenzhen was originally a magic iron trained in the gossip furnace of Taishang Laojun, but it was borrowed by Dayu, who is in charge of water conservancy.
Dayu used the divine iron borrowed from Taishang Laojun to control the endless flood. In addition, the spring water, the source of the flood, was blocked. From then on, workers can no longer come out of the spring to make waves. That's why there are myths and legends about Dayu's water control. In fact, this is mainly because the anchor needle has played a great role in the seabed.