The winter solstice is as big as a year, which is a folk proverb. Refers to the old folk custom, saying that the winter solstice is more important than the New Year's Day. Every winter solstice, people string relatives to worship their ancestors, and the streets and lanes are very lively. This proverb also shows on the other hand that the origin of the winter solstice means that the end of the year is near and the New Year is not far away.

According to the traditional theory of Yin-Yang and Five Elements, the winter solstice is an important solar term of "Yin-Yang transformation", so there is also a saying that "the winter solstice is a sun-born", and the setting of leap months is based on the winter solstice. The ancients thought it was a lucky day. For a long time in the past, the winter solstice was a "big New Year", for example, the winter solstice in the pre-Qin period was a "big New Year". Moreover, during the thousands of years from the Han Dynasty to the late Qing Dynasty, the winter solstice was once "as big as a year" or "second only to a year".