Dongzhi (冬至) literally means 'Winter's Arrival'. It is one of the 24 solar terms of China's traditional solar calendar. It has long been celebrated on (China's) Winter Solstice when the night is longest, and the day is shortest in the Northern Hemisphere.

In northern China where it can get bitterly cold, the people lacked sufficient warm clothing and adequate heating, so they ate hot food and drank hot liquids to stay warm. People believed that when the days were short, there was insufficient Yang energy, and they tried to eat high Yang foods according to Chinese medicinal cuisine principals.

Dumplings have been the most traditional food in the north of China for a long time. People make dumplings on Dongzhi Day with their friends and family.