The origin of solar terms in beginning of autumn

1, beginning of autumn is the time when the sun reaches 135 degrees on August 7th or 8th every year. Twenty-four solar terms: "July Festival, set up a word to solve spring (beginning of spring). Autumn is also awkward, and this is the thing. " Beginning of autumn generally indicates that hot summer is coming and autumn is coming. After beginning of autumn (solar term), the next rain will cool down after autumn, so there is a saying that "an autumn rain will bring a cold". Cui's Four-person Monthly Order in the Eastern Han Dynasty: "It is chilly to welcome beginning of autumn; In the autumn night, it is hot to the end. " As early as the Zhou Dynasty, on the day of beginning of autumn, Emperor Tiandi personally led the princes and doctors of the Three Kingdoms and Nine Counties to the western suburbs to welcome autumn and hold a sacrificial ceremony. According to records, the plane tree planted in the basin was moved into the temple in the early autumn of Song Dynasty. When it arrived at beginning of autumn, the historian announced it loudly. After the play, the phoenix tree dropped one or two leaves to express autumn.

2. On August 7th or 8th every year, beginning of autumn is regarded as the longitude of the sun's arrival 135. Beginning of autumn's "stand" means the beginning, and "autumn" refers to the maturity of crops. Beginning of autumn means that summer will cool down and autumn will begin. This is a solar term that reflects the season.

3. According to "Twenty-four solar terms": "Autumn is also contending, and things gather here". Beginning of autumn not only indicates that hot summer is coming, but also autumn is coming. It also means that the vegetation begins to bear fruit and children, and the harvest season is here. At this time, early rice harvesting and late rice transplanting in Central China, autumn crops entered an important growth and development period. The ancients regarded beginning of autumn as an important moment at the turn of summer and autumn, and always attached great importance to this solar term.