Eating glutinous rice balls from winter to day is a bowl of six, which means "six, six, and seven". Eating glutinous rice balls on the solstice in winter is a custom in the south of the Yangtze River. Eating glutinous rice balls in winter solstice is also called "winter solstice group", which can be used to worship ancestors or give gifts to relatives and friends. The ancient poem goes, "Every family eats rice bags in jiaozi, knowing that it is the winter solstice of the Ming Dynasty." During the Ming and Qing Dynasties, every household wrapped jiaozi on the winter solstice to worship the gods and ancestors, and then the family got together to eat jiaozi, also known as Tian Nian, so there was a folk saying that "jiaozi was one year older."

"Circle" means "reunion" and "perfection". Eating glutinous rice balls on the solstice in winter symbolizes family reunion, harmony and happiness.

The main raw materials of glutinous rice balls are sticky and difficult to digest, so they should be eaten in moderation. Eating too much may cause indigestion, bloating and stomachache.