Teacher, please answer the question about the 24 solar terms in Song Dynasty! Please. !

The last two sentences mean that the 24 solar terms are divided into two sections every month. These two festivals are the 6th and 2nd1of each month in the first half of the year, and the 8th and 23rd in the second half of the year. But it hasn't been fixed yet. No more than two days. Note that it is the solar calendar. For example, in beginning of spring this year, it was February 4th, and it rained on February19th. Yes, no, not just two days. Twenty means twenty.

Twenty-four solar terms were divided by the wise people in ancient China according to the position of the sun on the ecliptic through careful observation of nature and life. The interval between two adjacent solar terms is 15 degrees, and every 15 degrees is a solar term. In order to facilitate memory, people have compiled 24 solar terms songs.

"Twenty-four solar terms" reflect the influence of the sun on the earth and belong to the solar calendar category. It is a knowledge system formed by observing the movement of the sun in a year and understanding the changing laws of the four seasons, climate and phenology in a year.

It not only plays a guiding role in agricultural production, but also affects the food, clothing, housing and transportation of ancient people, and even cultural concepts. The current lunar calendar absorbs the solar terms of the trunk calendar as a supplement to the calendar, and is adjusted to conform to the tropic year through the "leap method" to form a combined calendar of yin and yang.