Did the 24 solar terms originate in China or abroad?

1 and "Twenty-four solar terms" are the crystallization of the great wisdom of working people in ancient China, and a unique calendar system summarized by our ancestors in the process of understanding and coexisting with nature by grasping the laws of the objective world. In 20 17, the United Nations approved China's "24 solar terms" to be included in the UNESCO representative list of human intangible cultural heritage.

2. It is inferred that the twenty-four solar terms originated in the Yellow River basin. Before the Spring and Autumn Period, there was no strict division of four seasons in China. Four solar terms, midsummer, midsummer, midsummer and winter solstice, were set in the Spring and Autumn Period. People began to have the concept of four seasons: spring, summer, autumn and winter.

3. After entering the Warring States Period, Wei Renshi Shen compiled a catalogue including the running relationship between 28 stars and five stars, which was the first catalogue in the world, and since then, China astronomy has entered a new era.

4. With the continuous development and perfection of astronomy, the 24 solar terms were completely established in Qin and Han Dynasties. Until the Western Han Dynasty, the names and orders of the 24 solar terms recorded in Huai Nan Zi Shi Zexun were basically the same as those of later generations, and remained unchanged for more than two thousand years. This can be seen as a sign of the stereotypes of the 24 solar terms.