Winter Solstice is one of the twenty-four solar terms, also known as "Winter Festival" and "Winter Festival". Some people believe that it is both a solar term and a festival. In the Zhou Dynasty, it was the New Year's Day, which used to be a very lively event. days.
In ancient books, it seems that we can also find evidence that the Winter Solstice is a festival. There are documents that record that the Yang Qi rises in the Winter Solstice, and the emperor is long, so congratulations. In other words, people originally celebrated the Winter Solstice to celebrate the new year. The arrival of the Winter Solstice as a festival originated in the Han Dynasty, but the first month of the Zhou calendar was November of the Xia calendar, which flourished in the Tang and Song Dynasties. Therefore, the first month of the Zhou Dynasty is equal to the current November.