Why does the winter solstice include jiaozi?

The winter solstice is an important solar term in China's traditional folk customs. Jiaozi is an indispensable table food for the rich and the poor, dignitaries and ordinary people from the winter solstice of the lunar calendar every year.

The custom of eating jiaozi in the winter of solstice has been handed down to commemorate Zhang Zhongjing, a "medical sage", who gave up medicine in the winter of solstice. Because Zhang Zhongjing died on the solstice of winter, he also made a "cold-dispelling and charming ear soup" for everyone. In memory of him, everyone will eat jiaozi on the solstice in winter. There is a folk proverb: Eat jiaozi on the solstice in winter, but don't freeze your ears. Because the shape of jiaozi is similar to ears, if you eat hot jiaozi on the solstice in winter, your ears will be protected this winter. This is a good wish of people.

The picture comes from the internet.