"Winter Solstice Noodles in jiaozi Summer Solstice" is a folk proverb, which means that you will eat a jiaozi on the winter solstice in most parts of the north, which means reunion. On the summer solstice, you should choose to eat noodles, which indicates good weather.

Eating jiaozi on the winter solstice is the standard of the northern winter solstice. As the proverb goes, "On October 1st, when the winter solstice arrives, every household eats dumplings." This custom was left in memory of Zhang Zhongjing, a "medical sage", who gave up medicine on the winter solstice.

Since ancient times, there has been a folk saying in China that "noodles are eaten on the winter solstice and jiaozi on the summer solstice". Although there are differences in eating customs on the summer solstice, eating noodles on the summer solstice is a custom in many areas. There is a folk saying that "eating noodles on the summer solstice makes a day shorter". Because new wheat was harvested after the summer solstice, eating noodles on the summer solstice means tasting new things.