Children make dumplings at a kindergarten in Ganyu District, Lianyungang City, Jiangsu Province, December 16, 2021 to celebrate the Dongzhi Festival or Winter Solstice Festival. (CFP Photo)

The traditional Chinese lunar calendar divides the year into 24 solar terms. Winter Solstice marks the arrival of the coldest season in the year. In many parts of the country, eating dumplings or Tang Yuan is essential to the festival.