What does the twenty-four solar terms mean?

"Twenty-four solar terms" is the product of ancient farming civilization, and farming production is closely related to the rhythm of nature. It is a knowledge system formed by ancient ancestors following the farming season, observing the movement of celestial bodies and understanding the changing laws of seasons, climate and phenology throughout the year.

Twenty-four solar terms are special festivals in the dry calendar to express seasons, phenology, climate change and establish "December construction" (festival). Initially, it was determined by the direction of rotation of the Big Dipper bucket handle. The Big Dipper rotates circularly, and bucket handle rotates around the east, south, west and north for one cycle, and each rotation cycle starts in beginning of spring and ends in the Great Cold. The current "twenty-four solar terms" are divided by the method of "fixing qi", that is, the solar terms are determined according to the position of the sun on the ecliptic; The "fixed space method" divides the sun's trajectory in one year into 24 equal parts, each 15 is 1 equal part, and each 1 equal part is a solar term, starting from the beginning of spring and ending in the great cold. "Twenty-four solar terms" is an important part of the long history and culture of the Chinese nation, which embodies the historical and cultural essence of Chinese civilization.

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