Interpretation: After the weather in beginning of spring, rain, fright, spring equinox, Qingming and Grain Rain, we arrived at Long Summer, Xiaoman, Miscanthus, Summer Solstice, Little Summer, Daxia, beginning of autumn, Chushu, Bailu, Autumn Equinox, Cold Dew, First Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Great Cold.

Twenty-four solar terms were established in ancient times. The rotation of the Big Dipper is closely related to the change of seasons: "bucket handle refers to the east, and the world is spring; Bucket handle guide, the world is summer; Bucket handle refers to the west, and the world is autumn; Bucket handle refers to the north, and it is winter all over the world. "

In ancient times, bucket handle's direction-the Big Dipper was used as the standard to judge the season, which was called sword fighting, also known as Jian Yue. Bucket handle revolves around the east, south, west and north, which is called one of the "years old" (Figure). It began in the beginning of spring and ended in the great cold.

In BC 104, taichu calendar written by Deng Ping absorbed 24 solar terms as a supplement to the calendar. Based on the Yellow River Basin. Divide the year into 24 segments, about 15 days.

In June 2006, the 24 solar terms were selected as the first batch of national intangible cultural heritage (hereinafter referred to as "national intangible cultural heritage"). 2016165438+1October 30th, 24 solar terms were included in the UNESCO representative list of human intangible cultural heritage.