What are the 24 solar terms?

The full text of the solar terms Song is as follows:

1, Spring rain shocks Spring Valley Day: Rain in beginning of spring shocks Grain Rain in the vernal equinox. The first spring refers to the beginning of spring and the second spring refers to the vernal equinox.

2. Midsummer, Midsummer and Midsummer: refer to the names of six solar terms: Long Summer, Xiaoman, Mangzhong, Summer Solstice, Slight Summer and Great Summer.

3. Autumn dew and autumn frost: beginning of autumn, Grade Three, Bailu, Vernal Equinox, Cold Dew and First Frost respectively. Beginning of autumn: Autumn is coming. Heat: The heat is the end of a hot summer day. White dew: The weather turns cold and the dew condenses into white. Autumnal equinox: divided equally between day and night. Cold dew: Dew is cold. First frost: it's getting colder and colder, frosty.

4. Winter snow and winter slight cold: refer to beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold respectively. Beginning of winter: The beginning of winter. Xiaoxue: It's starting to snow. Heavy snow: the amount of snow increases and the ground is covered with snow. Solstice of winter: the cold winter is coming. Xiao Han: It's getting cold. Great cold: the coldest time.

The origin of the twenty-four solar terms

Twenty-four solar terms originated in the Yellow River Basin. As early as the Spring and Autumn Period, four solar terms were set, namely, mid-spring, mid-summer, mid-autumn and mid-winter. After continuous improvement and perfection, by the Qin and Han Dynasties, the 24 solar terms had been completely established.

BC 104, Deng Ping (early Han Dynasty). The taichu calendar, which was formulated by Emperor Wu of the Han Dynasty, officially set 24 solar terms in the calendar, and defined the astronomical position of the 24 solar terms. "Solar term" and "neutral qi" appear alternately, each lasting 15 days. Now people have called "solar terms" and "neutral gas" solar terms.