The twenty-four solar terms are related to spring, summer and autumn.

Among the 24 solar terms in China, beginning of spring, Changchun, beginning of autumn and beginning of winter have entered the spring, summer, autumn and winter.

Related explanations:

1. beginning of spring: It is the first solar term among the 24 solar terms in the Ganzhi calendar, also known as the solar terms of the beginning of the year, beginning of spring and the first month. Beginning of spring is the first year of the year, and festivals are the first month. Beginning of spring is both the first year of the year and the beginning of spring.

2. Long summer: Long summer is the seventh solar term in the twenty-four solar terms of the lunar calendar and the first solar term in summer, which indicates the official start of the summer season.

3. beginning of autumn: It is the13rd solar term among the 24 solar terms in the lunar calendar, and the first solar term in autumn, which marks the official start of the two seasons: "Autumn" means that summer is cool. When we arrived in beginning of autumn, the phoenix tree began to shed its leaves, so there is an idiom "Autumn is known by falling leaves".

4. beginning of winter: After beginning of winter, the sunshine time will continue to shorten, and the height of the sun will continue to decrease at noon. China people regard beginning of winter as beginning of winter, and during their stay in beginning of winter, it is necessary to supplement food to spend the severe winter.

Extended data

Twenty-four solar terms are a knowledge system formed in ancient times by observing the movement of the sun for a year and understanding the changing laws of the four seasons, climate and phenology in a year.

Twenty-four solar terms divide the sun's annual trajectory into 24 equal parts, and each equal part is a solar term, starting from beginning of spring and ending with severe cold. Each solar term represents different changes in climate, phenology and time.

China has a vast territory, complex geographical conditions, great differences in climate and different seasons, so the specific climatic significance of solar terms does not apply to all parts of the country. For example, beginning of spring, a climatologist, defined beginning of spring as a day when the daily average temperature is stable above 10℃ every five days, which is inconsistent with the meaning of beginning of spring in the middle and lower reaches of the Yellow River. Only Lingnan in China really enters the spring.

Twenty-four solar terms are only a reference for many regions. Because China was an agricultural society in ancient times, agriculture needed a strict understanding of the operation of the sun, and farming was carried out entirely according to the sun. The twenty-four solar terms in ancient China were based on guiding farming.

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