Explain the 24 solar terms sentence by sentence:

1. beginning of spring: "Li" means beginning, and "Spring" means foolishness, which means that everything begins to come alive. It symbolizes the beginning of spring, when the temperature rises and everything wakes up, spring returns.

2. Rain: It means that the weather in China gradually warms up, the snowfall stops, it begins to rain, and the rainfall begins to increase gradually.

3. Scare: The thunder started, which alarmed everything. The temperature and ground temperature gradually increased, the land thawed, spring ploughing began, and the animals that were dormant underground began to wake up and unearthed.

4. vernal equinox: the vernal equinox is the midpoint of three months and 9 days in spring. On this day, the sun shines directly on the equator, which is the day when day and night are equally divided. The vernal equinox and the autumnal equinox were called the equinox in ancient times, that is, day and night were equal.

5. Qingming: The weather is clear, the temperature is getting warmer, the vegetation is sprouting, and everything is thriving. It's a folk grave-sweeping festival.

6. Grain Rain: Rainfall is increasing gradually, and timely rainfall is extremely beneficial to grain growth. "filial piety" cloud: the bucket refers to Chen as Grain Rain, and the rain gives birth to a hundred valleys.

7. long summer: In summer, the temperature rises significantly, and everything will grow rapidly with the warm climate.

8. Small fullness: fullness means that the yang is full. Xiaoman means that the yang has not yet reached its strongest state. Full also means full grains, and the grains of summer crops such as wheat are gradually full and begin to bear fruit and mature.

9. Miscanthus species: "Miscanthus" refers to some crops with awns, and species means seeds. The awn seed indicates that the awned crops such as wheat and barley are mature and can be harvested. At this time, it is also the season of busy sowing late-season crops, millet and millet, so it is also called "awn seed".

1. Summer solstice: On this day, the sun shines directly on this regression line, which is the longest day and the shortest night in this hemisphere. The ancients had an anode, and yin qi began to grow. The day is here, the day is long, and the shadow is short, so it is the summer solstice. It marks the arrival of hot summer.

11. Slight summer heat: "Summer heat" means hot. Slight summer heat refers to the hot weather, but it has not yet reached the hottest time.

12. Great summer heat: the hottest period in a year.

13. beginning of autumn: "Autumn" means that the crops will soon mature. Beginning of autumn is the beginning of autumn, which indicates that the temperature begins to drop. It belongs to cool weather with crisp autumn air and clear moon and wind.

14, summer: "Chu" means "stop". It means that the hot summer day has come to an end.

15. White dew: water and soil moisture condenses into dew. Because at this time, the temperature gradually turns cold, the day is warm and the night is cold, and it is easy to reach the condition of condensation into dew. Therefore, the dew in the season is heavy and white, so it is called Bailu.

16. Autumnal equinox: In the middle of 9 days in three months in autumn, the sun shines directly at the equator like the vernal equinox, and the length of day and night is equal.

17. Cold dew: Cold is the gas of cold dew, and it turns white first and then cold, which means that the climate turns cold gradually. At this time, the temperature is already very low, and the vegetation is gradually wilting.

18. first frost: "Frost" is the condensation of water vapor on the ground when it meets cold weather. Therefore, the frost does not fall in first frost, but it means that the weather is cold and the first frost will appear on the ground.

19. beginning of winter: Even at the end of winter, things will be hidden at the end. It means to collect the crops after harvest, indicating that this day is the beginning of winter.

2. Light snow: It means that the temperature drops, so the rain turns into snow, but the snow season has arrived, but the amount of snow is not large.

21. Heavy snow: The temperature continued to drop, and the snowfall also increased from small to large, and snow began to appear on the ground.

22. Winter Solstice: On this day, the sun shines directly on the tropic of Capricorn. On this day, the day is the shortest and the night is the longest in this hemisphere. In ancient times, there was a saying about this day, that is, the cathode arrived, the yang began to grow, the sun went south, the day was short, and the shadow was long, so it was the winter solstice. Indicates the arrival of cold winter.

23. slight cold: "cold" means that cold air has accumulated for a long time. Slight cold means that it has not reached the coldest time.

24. Great cold: It means extreme cold, which is the coldest season in a year.

the origin of twenty-byte gas

the twenty-four solar terms are the traditional solar terms of the Chinese nation, which originated from the ancient farming culture in China. It is a specific time of the year according to the position of the sun running on the ecliptic and the orbit of the earth. As early as the Spring and Autumn Period and the Warring States Period, ancient Chinese farmers began to observe, study and record the phenomenon of solar terms, forming an ancient and accurate system of 24 solar terms.

according to farmers' observation of the natural environment and the needs of crop growth and development, the 24 solar terms divide a year into 24 uniform time periods, and each solar term marks the change of seasons and the transfer of farming. These solar terms include beginning of spring, Rain, Surprise, Spring Equinox, Qingming, Grain Rain, long summer, Xiaoman, Mangzhong, Summer Solstice, Slight Summer Heat, Great Summer Heat, beginning of autumn, Chushu, Bailu, Autumn Equinox, Cold Dew, first frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Great Cold.

Through the 24 solar terms, people can arrange farming activities reasonably according to the changes of seasons, help agricultural production and protect the growth and harvest of crops. At the same time, the twenty-four solar terms also reflect the awe of nature and the emphasis on seasonal changes in ancient China culture, and become one of the unique cultural symbols of the Chinese nation.