It was winter when he returned to his hometown. He saw that the villagers on both sides of the Baihe River were sallow and emaciated, hungry and cold, and many people's ears were frozen. So he decided to build a medical shed in Dongguan and Nanyang, and set up a cauldron to treat frostbite on the day of winter solstice.
He boiled mutton, pepper and some herbs for dispelling cold in a pot, then took out mutton and medicine, chopped them, cooked them into ear-shaped dumplings with bread, and distributed them to everyone who came to ask for medicine with two dumplings and a big bowl of broth. People ate "Joule" and drank "Quhan Decoction", and they were all hot, their ears were hot, and their frostbitten ears were cured.
This story has been circulated among the people, and people have the custom of eating jiaozi in memory of Zhang Zhongjing on the solstice in winter. This kind of food was vividly called Joule, and later it was called jiaozi or flat food. Therefore, eating jiaozi in the winter solstice is not only to celebrate the solar terms in the winter solstice, but also to commemorate Zhang Zhongjing's kindness and medical skills.
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Zhang Zhongjing (about 150 ~ 154—— about 2 15 ~ 2 19) was born in Nieyang County, Nanyang (now Zhangzhai Village, Gedong Town, dengzhou city City, Henan Province). At the end of the Eastern Han Dynasty, a medical scientist, one of the three doctors of Jian 'an, was honored as a "medical sage" by later generations.
Zhang Zhongjing extensively collected medical prescriptions and wrote the masterpiece Treatise on Febrile Diseases handed down from ancient times. The principle of "syndrome differentiation and treatment" established by him is the basic principle of TCM clinic and the soul of TCM. In the aspect of prescription science, Treatise on Febrile Diseases has also made great contributions, creating many dosage forms and recording a large number of effective prescriptions. The therapeutic principle of differentiation of six meridians established by him has been highly praised by doctors in past dynasties.