But who knows, she used to be a disgusting smelly river. The water in the upper reaches of this river is also cold, but after flowing to this place, it becomes dark red, turbid and smelly. Where this smelly sewage flows, crops in Zhang Mu will turn black and rot, and people there will get sores and itching. No one knows the reason, and people can't stand suffering. They have left their homes and fled to the upper reaches, and there is no one in the lower reaches of this river.
One day, the family escaped from the pass. When they reached the river, they were so tired that they stopped breathing. There are three people in this family, one is old and the other is young. Their daughter Axiu is beautiful and smart. The old man is an old Chinese doctor. He examined the river carefully and found that the rust water in this place had infiltrated into the river. This rust water can only precipitate and become clear if a kind of skin called evergreen is planted with human blood. But this kind of grass called evergreen goes deep into Horqin prairie, with a long road and high mountains, and wolves, insects, tigers and leopards everywhere. In order to eradicate this stench, Axiu's family decided to search for 7749 days and finally collected evergreen seeds in the depths of the grassland. However, on the way back, the old couple died of fatigue. Axiu buried his parents in tears and walked for more than a month before returning to this place.