Beginning of winter solar terms mean autumn harvest and winter storage. China used to be a farming society. People who have worked for a year should take advantage of beginning of winter to have a rest and reward their families for their hard work over the past year. There is a proverb that "beginning of winter fills the winter and the mouth" is the best metaphor. In the north, I like to use jiaozi as a nourishing food in early winter.

China's ancient medical explanation: The arrival of this solar term is that the yang is hidden, the yin is extremely abundant, the vegetation is withered, the insects are hidden, and all activities tend to stop, so as to hibernate and save energy for the next spring. Since you need to recharge your batteries, you must take food supplements in winter to enhance your immunity, so you choose jiaozi, which is easy to get, as a food supplement material.

According to legend, this thing is called jiaozi, which comes from the saying "at the time of intercourse" New Year's Eve is the turn of the old year and the new year, and beginning of winter is the turn of autumn and winter. There is a folk custom that jiaozi can't help eating during coitus. So on that day in beginning of winter, all kinds of jiaozi will sell like hot cakes.