The origin of the twenty-four solar terms

Twenty-four solar terms originated in the Yellow River Basin and are the crystallization of the long-term experience and wisdom of the ancient working people in China. As early as the Spring and Autumn Period, solar terms such as mid-spring, mid-summer, mid-autumn and mid-winter were set. After continuous improvement and perfection, by the Qin and Han Dynasties, the 24 solar terms had been completely established. In BC 104, the taichu calendar written by Deng Ping officially set 24 solar terms in the calendar, and defined the astronomical position of the 24 solar terms.

The origin of the twenty-four solar terms

Twenty-four solar terms are special festivals in the dry calendar, indicating the change of natural rhythm and establishing "December construction". At first, it was based on the changing stars. The Big Dipper rotates in cycles, and bucket handle rotates around the east, south, west and north in cycles, which is called one of the "years old". Each rotation cycle begins in beginning of spring and ends in severe cold.

The current "twenty-four solar terms" are formulated according to the position of the sun on the return to the ecliptic, that is, the annual movement track of the sun is divided into 24 equal parts, each 15 is 1, and each 1 is a solar term, starting in beginning of spring and ending in severe cold. "Twenty-four solar terms" is an important part of the long history and culture of the Chinese nation, which embodies the historical and cultural essence of Chinese civilization.

The twenty-four solar terms are beginning of spring, Rain, Sting, Vernal Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoxia, Daxia, beginning of autumn, Chushu, Bailu, Autumn Equinox, Cold Dew, First Frost, beginning of winter, Light Snow, Winter Solstice, Slight Cold and Severe Cold. The twenty-four solar terms are a kind of ancient China.