What solar terms eat jiaozi in the north?

Jiaozi will be eaten in winter in the northern part of the solstice.

The proverb says: On 10/day, when the solstice of winter comes, every family will eat jiaozi. This custom is said to commemorate the medical sage Zhang Zhongjing, who gave up medicine on the solstice of winter. Therefore, in the north of China, during the winter solstice of the lunar calendar, jiaozi has become an indispensable holiday food for both the rich and the poor.

The winter solstice is the middle of 1 1 month in 24 solar terms, and it is the fourth solar term in winter. Winter solstice is regarded as a big holiday in winter. There is a folk saying that winter solstice is as big as a year, so the ancients called it "sub-year" or "off-year". In some coastal areas of southern China, the traditional custom of offering sacrifices to ancestors during the winter solstice is still continuing. In some areas of northern China, it is a custom to eat jiaozi every winter solstice.