Why do you eat jiaozi on the solstice in winter?

In memory of Zhang Zhongjing, people eat jiaozi on the solstice in winter.

According to legend, when Zhang Zhongjing returned to his hometown in his later years, it coincided with the snowy winter. Many people displaced by the war live in the streets without food and clothes, and many people's ears are frozen. Zhang Zhongjing couldn't bear to see this, so he set up a clinic east of Nanyang Pass. Let the disciples make stuffing with mutton, pepper and some herbs for dispelling cold, and then wrap it into jiaozi. Give alms to the people. This jiaozi has cured many villagers of their frozen ears.

On the solstice of that winter, Zhang Zhongjing's life ended, and many people came to Changsha to mourn. You pick and I carry, which makes Zhang Zhongjing's grave very big. He also built a temple in front of Zhang Zhongjing's grave, which is now the medical shrine.

From then on, every year from winter to September, everyone scrambled to eat jiaozi. There is a proverb that "ears are not frozen in jiaozi from winter to Sunday".