Eating jiaozi in winter originated in jiaozi in order to commemorate a medical saint. Because of the different customs in different parts of our country, the ways to celebrate the winter solstice are also different. Most areas in the north will eat jiaozi, wonton or kill sheep and eat mutton. Southern regions like to eat glutinous rice balls or long rice noodles on this day, and jiaozi from winter to the sun is to commemorate the kindness of medical sage Zhang Zhongjing. There is a saying in Nanyang that jiaozi was ruined on the solstice of winter, and no one cared about freezing his ears, but also to commemorate this medical saint. Zhang Zhongjing is from Nanyang. During the Eastern Han Dynasty, he served as a satrap in Changsha. Later, he resolutely resigned and returned to his hometown to treat the people. It happened to be winter when he got home. He saw that many people were sallow and emaciated because they didn't have enough to eat. Because of the cold weather, many people's ears were frozen rotten, so he asked his disciples to set up a big pot for people free of charge on the day of winter solstice to cook soup to treat frostbite. There is mutton and chopped medicine in the soup, which was later known to be made into a flat food, that is, jiaozi, which we are eating now, so we have the custom of eating jiaozi from winter to day. This is the origin of eating jiaozi in winter. In fact, many festivals and solar terms in China have different customs and food cultures, and there are many historical and commemorative meanings behind them.