It is found that "Twenty-four solar terms" is a unique cultural phenomenon in China, and the knowledge system behind it has not been found in other civilized systems. It is the product of the harmonious mode of Chinese civilization.

Its appearance inevitably requires some special conditions. Generally speaking, there must be objective conditions first, subjective desire second, corresponding astronomical knowledge third, and strong promotion of policies last. Only when these four factors work together can we produce this cultural phenomenon and guide production and life.

The invention process of the twenty-four solar terms:

The solar terms of 1 and 24 are an important part of the long history and culture of the Chinese nation, which embodies the historical and cultural essence of Chinese civilization. "Twenty-four solar terms" and "December construction" are the basic contents of the calendar, which were concluded in ancient times (or ancient times).

2. The ancient "Twenty-four solar terms" were determined by the direction of the top of the Beidou bucket handle, and the rotation of bucket handle pointed to the "Twelve Chens" in turn, which was called "December Construction" (or "December Order"). In ancient culture, the branch is connected with the time position of gossip, and the yin position is the root of the acquired gossip, the position at the end of the year and the beginning of the year, representing the end and beginning.

3. During the Western Han Dynasty, the name of "Twenty-four solar terms" appeared for the first time in the article "Huai Nan Zi Tian Xun". During the period of Emperor Wu of the Han Dynasty, "Twenty-four solar terms" were absorbed into taichu calendar as a supplement to the calendar guiding agriculture.

Extended data:

division

The current 24 solar terms are divided by the method of "fixing qi". The method of "fixing qi" is different from the ancient method of "bucket handle acupoints". Although the determination methods are different, the astronomical phenomena marked by them are the same.

For example, the direction method of barrel handle refers to the south as the summer solstice, and the sun points directly to the tropic of cancer; The "solid gas method" takes the summer solstice when the sun runs to 90 degrees of the yellow meridian, which is also the tropic of cancer when the sun points directly at the intersection. It takes the earth's revolution around the sun as a cycle.

References:

Baidu encyclopedia-24 solar terms