Among the 24 solar terms, how many solar terms are included in the connection between summer and summer?

Among the 24 solar terms, there are six solar terms in this sentence: Long Summer, Xiaoman, Mangzhong, Summer Solstice, Small Summer and Great Summer.

1, Long Summer is the seventh solar term among the 24 solar terms and the first solar term in summer, representing the beginning of summer. Usually on May 5th or 6th every year, it marks the end of spring and the beginning of summer.

2. Xiaoman is the eighth solar term among the twenty-four solar terms, which usually falls on May 20th or 2 1 every year, marking the beginning of filling maturity of summer crops.

3. Ear seed is the ninth solar term among the twenty-four solar terms, which usually falls on June 5th or 6th every year, marking the maturity of summer crops and the beginning of harvest season.

4. The summer solstice is the tenth of the 24 solar terms, generally around June 2 1, which indicates the longest sunshine time in the northern hemisphere and the midpoint of summer.

Slight summer heat and great summer heat are the twelfth and thirteenth solar terms among the 24 solar terms, which are around July 7 and July 23, respectively, marking the beginning and peak of the summer heat period.

The meaning of the twenty-four solar terms:

1, reflecting the change of four seasons: the twenty-four solar terms divide a year into 12 solar terms and 12 gas, and each solar term and gas are separated by half a month. This way of time division reflects the law of seasonal changes and helps people to better arrange agricultural production and life. For example, solar terms such as vernal equinox, autumnal equinox, winter solstice and summer solstice clearly show the division of four seasons and the replacement of seasons.

2. Reflect the phenological characteristics: The 24 solar terms are closely related to the phenological characteristics. Each solar term has its specific phenological performance, which reflects the periodic changes of natural environment and biology. For example, insects start to move when they are frightened; By Qingming, the vegetation began to sprout; During the first frost, the leaves of plants began to fall off. These phenological characteristics are all manifestations of periodic changes in nature.

3. Reflect astronomical meteorology: The 24 solar terms reflect the profound understanding of astronomical meteorology in ancient China. Each solar term has its own specific astronomical and meteorological significance. For example, at the vernal equinox and autumnal equinox, day and night are equal; In summer solstice, the sun is the highest; On the solstice in winter, the day is the shortest. These astronomical and meteorological changes are closely related to the growth and harvest of crops and guide people's agricultural activities.