Why do northerners eat jiaozi on the solstice in winter?

The reasons why northerners eat jiaozi in winter solstice are as follows:

Jiaozi was invented by Zhang Zhongjing, a doctor from Nanyang in the Eastern Han Dynasty. In winter, Zhang Zhongjing gave alms to "Quhan Joule Soup" to treat frozen ears for ordinary people, which saved many people's lives and people remembered him.

Later, Zhang Zhongjing died in the winter of solstice. In memory of him, every family will eat jiaozi on the solstice in winter. It is said that if you eat jiaozi on the solstice in winter, your ears will not freeze off, and "Joule" and "Joule" are homophonic, so this tradition is formed.

The tradition of eating jiaozi in the northern region has a stronger festive meaning. As one of the twenty-four solar terms, the winter solstice was determined by the ancients in the Spring and Autumn Period more than 2,500 years ago by observing the sun with soil, and it is the earliest of the twenty-four solar terms.

On this day, the northern hemisphere has the shortest day and the longest night. The ancients believed that from winter to the future, the days became longer and the yang rose, so people held celebrations on this day.