The winter solstice, also known as the southern solstice, winter festival, sub-year, etc., has two connotations of nature and humanity. It is not only an important solar term in the 24 solar terms, but also a traditional ancestor worship festival in China. The winter solstice is one of the four seasons and eight festivals. It is regarded as a big festival in winter. There is a saying in ancient folk that “the winter solstice is as big as the year”. The customs of the winter solstice vary in content or details due to different regions. In southern China, there is a custom of worshiping ancestors and feasting on the winter solstice. In northern China, there is a custom of eating dumplings on the winter solstice every year.