According to legend, during the Qin Dynasty, floods often occurred in western sichuan bazi, and Bing told Jiro to go upstream to have a look. Jiro approached Leiyushan and heard someone crying in the thatched cottage. Walking in, Jiro, a white-haired old lady, asked her why she was crying. She said, "There is a dragon in the Minjiang River. It's always flooding, causing a lot of harm. Everyone is afraid that it will send pigs, cattle and sheep to sacrifice it on June 24 every year. Three-year big sacrifice, but also to send virgins. My poor little granddaughter. I won't watch it! " Jiro said respectfully, "Don't worry, mother-in-law, your little granddaughter won't leave!" " "The old woman looked at Jiro carefully for a while and said," Young man, you have come to collect dragons. Be careful! "Jiro said," my mother-in-law is right. What's your name? " The old woman said, "My name is Wang and I live in Lishan. People call me Lishan's mother. " Jiro said goodbye. He took a few steps and looked back. Suddenly I saw the thatched cottage, only to know that it was a fairy who came to enlighten him. Jiro went back and told Li Bingxin what Wang Yuyan had said. They discussed for a while and came up with an idea. They want to clean up the dragon.

On June 24th, Li Bing sent a message that he would personally provide a product to Nie Long. As in previous years, an altar and offerings were set up in Jiangshen Temple, and a group of trumpeters were invited to play. After a while, the dragon came. He entered the temple gate and stared at a pair of boys and girls on both sides of the altar. He feels that these two are not like children this year, and one seems to have three eyes. The dragon has a guilty conscience and dares not move forward. The car turned around and tried to run. At this time, dressed as a virgin Jiro, his eyes closed and he flashed a three-pointed double-edged knife with a swish. Brother Jingshan Park, pretending to be a boy, came with the roaring dog. The dragon couldn't help shivering and hurried to the river. Jiro followed him to the river. The dragon rolled in the waves, turned into a duck, rushed out of the waves and flew to Ere Mountain. Jiro's eyes stared at it and immediately turned into an eagle, flying with his heels. Seeing that it was about to be caught, the dragon folded its wings and plunged into the deep pool of the mountain bend. Jiro's eyes swept away, knowing that the dragon was going to escape from the underground river, he sat down at the exit of the underground river and pretended to wash his feet. When Kong Lung came out, Jiro pinched it hard with his foot, but it was a little slow, only a few tail hairs were clipped. A fan of the dragon turned into a snake head and threw it into the water. Jiro immediately became a fish eater. Get him. As soon as the dragon washed ashore, it became a centipede and swept Jiro with poison whiskers. I didn't know Jiro had become an eight-foot cock, and he wanted to peck a centipede. The dragon quickly spits out the venom and begins to shuttle through the smoke. The dragon ran to the king of Qingcheng Mountain and became a great man. Hungry, he saw a shop by the road. He is selling Dandan Noodles, and the proprietress is rubbing noodles on the chopping board. The dragon walked into the shop and begged the old woman to give him a bowl of Qingcheng sweet water quickly. The old lady readily promised and took it out soon. Nie Longsan ate noodles twice and wanted to eat another bowl. Suddenly, his stomach hurts. It hurriedly used its specialty to press it, and the pain was even worse when it was pressed. Beads of sweat on the skull can't stop, which makes me sick. It knows it has turned around, and it looks at it. Jiro came out and was in a hurry. Wow! I vomited all the noodles I ate, except a thick one stuck in my throat. When it looked underground, the noodle became a chain, stuck in the throat and hooked on the apex of the heart. I want to ask the old woman later. She has been holding the chains for a long time and gave them to Jiro. Jiro took her hand and said, "Thank you, Lishan's mother. This evil Longquan got it. It tried to escape, so it ran out and rolled into the ditch. Jiro followed him to grab the chain and pulled it down. The dragon showed its true colors and swept away with its tail. Jiro sat on a big stone, and his ass printed two holes in the stone. The edge of the rock swept by the dragon is as smooth as jade, and now it is called "dragon rolling edge", but it still hasn't escaped. Jiro led it from Wangpoyan Longdongzi Tunnel to Fulongtan at the foot of the pile, locked it on an iron post there and told it to spit water to irrigate the field.

In order to commemorate the contributions of Li Bing and Jiro, people built a temple on the pile called "Fulongguan". That is, the Erwang Temple.