A long time ago, in what is now Dalong, there was a big ditch, flowing from west to east, with clear water. On both sides of the ditch, there were large camphor trees and pine trees that a few people couldn't hold together, and chicken blood vines and green kudzu vines as thick as buckets, growing mixed. There are vine trees everywhere, tree vines and vines, the sky can't see the earth, and the earth can't see the sky. In this area, there are tigers hidden in the grass, apes jumping on the cliffs, and mountain boars running in the woods. People here are slash-and-burn, half farming and half hunting.

In the crowd, there was a young man named Honghe, who was daring and powerful. He made a living hunting, and every day he walked back and forth on a green kudzu vine as thick as a bucket that spanned the north and south sides of the ditch. This green kudzu vine was born on the south bank, climbed an old camphor tree, climbed along the thick branches to the center of the ditch, hung down several feet from the water, and climbed the branches of another big tree that grew on the north bank and extended to the center of the ditch. All the way to the north bank of the ditch, he became a "big dragon" that spanned the ditch for more than ten feet. At that time, the "dragon" crossed the water, and the water flowed under the "dragon." People on both sides of the strait relied on the "bridge" built by the "big dragon" to come and go south and north, working hard for a living, and their lives were peaceful and comfortable.

One day, Red River carried a few tiger skins on his back, and climbed from the south bank to the north bank on the Dragon, wanting to exchange the tiger skins for a few liters of grain. Strange, the "dragon" under his feet was not green kudzu vine, but chicken blood vine, as thick as a large water tank. When he returned seven days later, the vine blocked all the water in the ditch, and the top of the ditch became a sea of Wang Yang, and the bottom of the ditch was dripping without water. Nine days later, the whiskers of the "dragon head" on the south bank extended southward, blocking all the valleys and low-lying areas on the south bank; the "dragon tail" on the north bank went northward, blocking all the valleys and low-lying areas on the north bank. As a result, the upper reaches of the ditch were all flooded; the lower reaches of the ditch were dry for years. Red River thought to himself: This is not an ordinary vine, nor is it an ordinary "dragon" To drain floods and relieve drought and save the people, we must eradicate demons.

Red River sharpened and sharpened his big knife until the blade reflected a figure. The blade blew and broke, and he chose an auspicious day to cut from the "dragon tail" on the north bank. Unexpectedly, the "dragon tail" swung violently and swung the Red River over several mountains; with another swing, the water upstream of the ditch turned over the river and rushed downstream, washing away many houses and fields; the third swing buried all the big trees and vines in this area deep into the ground.

Red River was thrown out of several mountains by the "dragon" tail and fell heavily to the bottom of Qilin Mountain. There lived an old man with a silver beard and white hair in the Qilin cave. The old man carried Red River into the cave and treated Red River with his homemade knife medicine. After a few days of conditioning, Red River woke up, and after a few months of recuperation, Red River recovered. The old man told him that if he wanted to kill demons for the people, he had to go to Phoenix Mountain to find Phoenix Girl, who had great powers and superb spells. Red River said goodbye to the old man, and trekked through mountains and rivers to the bottom of Phoenix Mountain, finding a winding mountain road and climbing up. Just a few steps away, a large python drilled out of the grass, its head held high and its tongue like a black sword. Honghe pulled out his sword and said loudly, "I'm a hunter, and I don't know how many pythons that are bigger than you have killed. I have something urgent to find Miss Phoenix today, don't hurt you, please get out of the way!" After hearing this, the big python got into the grass like a gust of wind.

Red River continued to go up, halfway up the mountain, and a black, fat mountain pig blocked the way with its teeth bared. Red River pulled out his sword and said, "I am a hunter, and I usually look for you. Today, I have an urgent matter to find Miss Phoenix. If I don't hurt you, please make way!" After hearing this, the mountain pig slapped his two big ears and got into the mountain forest.

Red River continued to climb up and reached the top of the mountain. There were no big trees or old vines on the top of the mountain, but it was a flat ground with the same color of silk thatch grass growing on the ground. There were neither houses or temples, and the Phoenix girl could not be seen. Red River was puzzled when suddenly a big tiger jumped out of the silk grass, and Red River immediately drew his sword. The tiger did not pounce and stared at him from a distance of more than ten meters. Red River said, "I am a hunter, and I have fought many times with your brothers on weekdays. Although your brothers have hurt me before, many of your brothers have died miserably by my sword. Today I have no intention of hurting you. I just want to find the Phoenix girl, please go!" The tiger didn't go away, but drooped its head. After a while, it said, "Miss Phoenix has gone away." Honghe was puzzled when the tiger said again, "Miss Phoenix knew you were coming to find her, so she left the message to me." Honghe hurriedly said, "Please speak quickly!" The tiger moved to Honghe's side step by step, put his front foot on Honghe's shoulder, put his mouth to Honghe's ear, whispered for a while, and then disappeared into the vast grass.

Red River left Phoenix Mountain and returned to Qilin Cave. According to the words of Phoenix girl, he bought forty-nine catties of steel, asked the famous craftsman to use 991 days to make a treasured knife, and dug nine grooves in the knife. He asked the old man of Kirin Mountain to embellish a cancer tumor at the end of each groove, and sewed nine tiger skins into a boat with a narrow top and wide bottom, and rubbed nine wild pig skins into two ropes, one tied boat and one tied sword. With complete preparations, Red River chose to fight demons on the ninth day of July. That day, Red River stood on the tiger skin boat, clutching the treasured knife with both hands, taking a deep breath, holding his breath, and using all his strength to slash at the "dragon tail." There was a loud crack, like the sky falling apart, the "dragon tail" moved, but it couldn't swing, it just trembled all over, the ditch water poured into the "dragon body" from the knife groove, and the bright red blood seeped into the ditch water.

Red River was very tired and slept in the tiger skin boat. At noon, Red River woke up and pulled out the treasured knife. The "dragon tail" where the knife was cut was more than a foot wide, and blood kept gushing out, staining a large red ditch. Red River wiped the knife clean, ate and slept in the tiger skin boat, rejuvenated, and prepared to fight again tomorrow.

After that, Honghe sliced his sword every day and drew his knife at noon, and by the ninth day of August, he had slashed a total of 30 knives. This thirtieth knife, the "dragon tail" snapped, the ditch water rushed away, and the "dragon tail" was washed to the bottom of the ditch. Honghe stood on the tiger skin boat and watched the water that rushed out of the gap, splashing countless splashes, and watched the Wangyanghai Sea upstream of the ditch slowly recede, and the dry riverbed downstream began to flow, and Honghe's heart was sweet. Just as he was happy, he suddenly found the green kudzu vine at the bottom of the "dragon body" that he was very familiar with. Honghe was worried that the green kudzu vine had also been cut, so he hurriedly used his penny to look through it carefully. Once the green kudzu was flipped, it magically surfaced and leaned tightly against the tiger skin boat, reducing the shaking of the tiger skin boat.

The water in the upper reaches of the ditch has subsided, and there is water flowing in the lower reaches of the ditch, so the local residents are curious to see what happened. When people learned that Red River was killing demons and demons for the people, they sent meals and vegetables, tea and water every day, one by one to express their condolences and thanks. Red River has received the support from residents on both sides of the river, and its spirit is even more strong. He followed the instructions of Miss Phoenix every day, cutting the knife on time and drawing the knife on time. The second and third sections… The fifteenth section was cut until the ninth day of September the following year before the "dragon head" was cut off.

On the ninth day of September, the residents on both sides of the strait came to celebrate with joy. The lions came, the phoenixes flew, and the monkeys came, so the crowd was jubilant and the beasts danced. A very beautiful girl in the crowd jumped on the tiger skin boat, helped the Red River to kill the demons, and said to everyone: "The Red River killed the demons for the people. After more than a year of hard work, the demons were finally cut into fifteen pieces and thrown to the bottom of the ditch. The floods in the upper reaches of the ditch and the droughts in the lower reaches were eliminated. In recognition of the meritorious ministers, I propose that this ditch be named'Red River '!" The girl's words were enthusiastically agreed by the people on both sides of the strait. The girl added: "This green kudzu vine is a real green dragon. It turns the vine into a bridge to benefit the people, so it is persecuted by the demons. Now there are fifteen corpses of demons at the bottom of the river, and it will become fifteen beaches. From now on, we can build a bridge across the river on the beach, and we don't need the green dragon to turn into a vine to make a bridge. I will take the great hero Honghe back to Phoenix Mountain to heal him. I will take good care of him, please rest assured. "

Someone in the crowd shouted, "Miss Phoenix! She is Miss Phoenix! At this time, cheers sounded on both sides of the ditch.

From then on, this big ditch was called the "Red River." People in other places called it the "Red River", but the local people passed it down from generation to generation and used to call it the "Red River".