1. About the origin and legend of jiaozi, the folklore was invented by Zhang Zhongjing, a "medical sage". According to legend, when Zhang Zhongjing resigned from his post and returned to his hometown, he saw many ordinary people whose ears were frozen because of the cold weather on the road and felt extremely uncomfortable. Therefore, after returning home, Zhang Zhongjing set up a medical shed in the open space of Dongguan, Nanyang, specifically to treat people with frozen ears. This is also the background of jiaozi's origin and implication.

2. The medicine made by Zhang Zhongjing is called "Jiao Er", which is to cook and chop the cold-dispelling medicine, and then cook it in the dough for the people with frozen ears. This is the origin and legend of jiaozi. At that time, it coincided with the winter solstice, so people used the custom of eating jiaozi on the winter solstice to commemorate Zhang Zhongjing's kindness.

3. At the same time, jiaozi is also a representative food during the Spring Festival, and Zhang Zhongjing in jiaozi evolved later. About the origin and meaning of jiaozi, experts explain it this way. Jiaozi is also called "Jiaozi". People enter the new year at midnight, so it is also called "Jiaozi at the younger age", which represents people's beautiful yearning for the new year.