Many years ago, the cargo of toy lakes was mainly transported by small wooden vessels, which, as a result of their adult months and months of bowing and pulling, had accumulated dysentery, with eight or nine of them suffering from back pain. There was a young man named doo-jung, who was kind enough to find a cure for his suffering. In order to fulfil that wish, he said goodbye to his parents and left the house for medicine. One day, he met a drug picker on the hillside, and he walked forward with joy and left without returning his head. The mother's food supply had been exhausted, but the burden was still very low, and he went on to pray for the elderly and complained about the suffering of the husbands. Under the tear of his heart, he rushed out of the potion to deliver a piece of bark that would cure the pain on his knee to doo-jung, pointing to the high mountain, saying, “be careful when the hill is steep.” torto thanked him for his farewell and climbed along the mountain road. On the way, he met an old man who had heard that du would go up to the top of the mountain to pick up medicine, and even to stop him: "the child, i'm sure, is still young, the mountain swan is difficult to fly, and the apes are sad to climb." and he was determined to relieve his companions of the pain, unswervingly, and when he climbed to the lower half of the hill, he listened only to the crows, and the hawks lamented at the eagles as if he were going to return. It was a panic, and the stomach was so hungry, that suddenly one fell down in the mountains, and the body was hanging on a giant branch. After a while, he woke up and found himself next to the kind of tree he wanted, and then he collected it so hard. But after exhaustion, he fainted on the cliff, and was washed away by the water of the mountains into the oblivion of 800 miles. The men of toyako heard of this consumption, immediately searched for it, for many days, and finally found doo-jung's household in a mountain of trees on the edge of toyako, holding a bundle of collected bark tight on his hands, with tears on his hands, and finished with the bark he had collected, and the pain on his knees. In honour of doo-jung, the bark has since been officially named doo-jung。
