What is solar term song?

There are many versions of the solar term song, as follows:

Standard Edition: Spring rains shake spring and clear valleys, and summer is full of summer. Autumn dew, autumn frost, little snow in winter and cold in winter. The two festivals remain unchanged every month, with a maximum difference of one or two days. The first half of the year is June 2 1 day, and the second half is August 23.

Classic Edition: The spring rain is falling, the insects are awake, and the vernal equinox is near the Qingming Festival. Before picking tea in Grain Rain, it is full in summer, with a sickle of awn seeds. It is only a little summer until the summer solstice, and the heat is in the dog days. In beginning of autumn, it is summer, the white dew flies south, the autumn equinox is cold, and the first frost turns red. There will be a little light snow in beginning of winter. The snow indicates a bumper harvest year, and the winter solstice is a few days, with slight cold and severe cold.

"Twenty-four solar term song" is a small poem compiled for the convenience of remembering the twenty-four solar terms in the ancient calendar of China, and there are many versions circulating. Solar terms refer to the 24 solar terms and climate. It is a calendar made in ancient China to express seasonal changes and guide farming. It is the crystallization of the long-term experience and wisdom of the ancient working people in China.