It is said that there was a man who had a lot of grain in his house during the winter solstice, and then he made the grain into bricks and built the wall of his house. Later, in the famine years, the people knocked down the wall of his house and took out all these bricks to eat. This is the rice cake, which has spread to the present.

The winter solstice has two connotations: nature and humanity. It is not only an important solar term among the 24 solar terms, but also a traditional folk festival of ancestor worship in China. The winter solstice is one of the four seasons and eight festivals, which is regarded as a big holiday in winter. In ancient times, there was a saying that the winter solstice was as big as a year. The custom of winter solstice is different in content or detail because of different regions. In southern China, there is the custom of offering sacrifices to ancestors and feasting on the winter solstice. In the northern part of China, it is a custom to eat jiaozi every winter solstice.