On September 9, one year, on the Double Ninth Festival, a famous doctor named Wu came back with two disciples to collect medicine and stayed in a hotel near the mountains and rivers. In the evening, the hotel is very lively. Three apprentices are drinking, and a group of rich children at the next table are making noise. Dr. Wu asked the hotel owner what they were doing, and the owner replied that they were eating crabs in a competition to see who ate more. The winner will have priority to hunt deer tomorrow. This group of young people became more and more crazy. Before long, empty crab shells piled up on the table into a hill. Dr. Wu is well aware of the dangers of medicated diet and eating crabs. Before leaving the table, he gently advised: "Listen to the doctor's words, crabs are cold, so don't eat too much, otherwise cold pathogens will damage the spleen and stomach, and it will be too late to regret!" This group of teenagers are very unhappy. Someone shouted: "we spend money for fun, how can we listen to your discipline!" " Dr. Wu said patiently, "Crabs eating too much will make your stomach uncomfortable, and then you will worry about your life!" " Several teenagers were already very impatient and shouted in unison, "Go and drink your wine. It's none of your business if we eat to death." Then continue to eat and drink. Seeing this scene, the shopkeeper smiled. He said to Dr. Wu, "You don't have to worry about them. These children are seldom happy, so let them go! " Dr. Wu said to the shopkeeper, "They will stay with you tonight, and someone will get sick at night." See what you do! " The shopkeeper disagreed and said impatiently, "mind your own business and don't mess up mine!" " With a sigh, Dr. Wu had to explain to his two disciples, "After you finish your meal, go to the back hill to pick perilla for emergencies. "In the middle of the night, those teenagers really shouted that they had a stomachache, some sweated, and some rolled on the ground in pain. The hotel owner was also shocked. In his panic, he suddenly remembered Dr. Wu, so he quickly woke up Dr. Wu and his two apprentices. Doctor Wu comforted them and said, "I have prepared herbs for my two apprentices. Fry them quickly, which can save the teenagers." A teenager said in shame, "Sir, please don't care, save our lives!"! ""The herbs were quickly cooked, and the teenagers drank the soup. Soon their stomachs stopped hurting and they felt much more comfortable. The shopkeeper inexplicably asked what medicine Dr. Wu used. Dr. Wu said, "This medicine is called Perilla frutescens and Xinwen, which can relieve the coldness of crabs." Everyone was impressed.