Characteristics and origin of solar terms in beginning of autumn

1, beginning of autumn solar terms are characterized by sultry weather, and rainfall, rainstorm and humidity all tend to decrease or decrease.

2. Regarding the origin of solar terms in beginning of autumn, the twenty-four solar terms wrote: "beginning of autumn, July Festival. Make a word to understand spring. In autumn, everything gathers here. "

3. beginning of autumn is the 13 of the 24 solar terms, which is the product of ancient farming civilization. In the pre-Qin period, some places in China formulated 24 solar terms according to the changes of stars.

4. During the period of Emperor Wu of the Han Dynasty, the twenty-four solar terms were absorbed into the taichu calendar, and the winter solstice was determined by standard table photogrammetry, and the solar terms were divided according to the "average time method". Today, the 24 solar terms are based on the position of the sun on the return to the ecliptic.