Beginning of winter's neglect of jiaozi Bowl's frozen ears is a folk song handed down from ancient times to commemorate the medical sage Zhang Zhongjing. Speaking of the origin of this sentence, I also want to tell the story of Zhang Zhongjing, a medical saint. Zhang Zhongjing is from Gedong, Nanyang. Treatise on Febrile Diseases, written by him, is a masterpiece of doctors and is regarded as a classic by doctors in past dynasties. Zhang Zhongjing has a famous saying, if you advance, you will save the world, and if you retreat, you will save the people. Not a good thing, but also a good doctor. He boiled mutton, pepper and some herbs to remove cold in a pot, then took out mutton and medicine, chopped them up, cooked them with bread to make ears like ears, and gave them to everyone who came to ask for medicine, two ears and a big bowl of broth. After eating pepper and drinking Quhan soup, people are warm all over, their ears are hot, and their frostbitten ears are cured. Later generations learned to look like Joule, wrapped it up and made it into food, also called jiaozi or flat food.