There are 34 solar terms in a year.

Twenty-four solar terms: beginning of spring, rain, fright, vernal equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoshu, beginning of autumn, Chushu, Bailu, Autumn Equinox, Cold Dew, Chufrost, beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold.

1, beginning of spring: When the bucket handle of the Big Dipper points northeast, it is beginning of spring, the first of the 24 solar terms, corresponding to the twelve branches of the moon, which is the first in a year. It means to begin to enter the spring, "yang and thorns, everything is spring." In early spring, everything is full of vitality, and the four seasons begin from now on.

2, rain: At this time, the spring breeze blows, the ice and snow melt, the air is humid, and the rain is increasing, so it is called rain. People often say: "Spring blossoms, and rain is busy to send fertilizer."

3. Stinking: This solar term means that after the beginning of spring, the climate gets warmer, the spring thunder starts to shake, and all kinds of hibernating animals that are dormant in the soil will wake up and start to move, so wake up. During this period, the eggs laid by overwintering insects will also begin to hatch.

Vernal equinox: In vernal equinox, the sun is above the equator. This is the 90-day vernal equinox of spring. On this day, the northern and southern hemispheres are equal in day and night, so it is called the vernal equinox. After this day, the direct position of the sun continued to move from the equator to the northern hemisphere, and the northern hemisphere began to have long days and short nights. So the vernal equinox is the beginning of spring in the northern hemisphere.

5. Qingming: At this time, the climate is refreshing and warm, everything "spits out the old and absorbs the new", flowers and trees sprout new branches, everything begins to grow, and the earth presents a quiet scene in spring. "Huainanzi Astronomical Training" said: "Fifteen days after the vernal equinox, the bucket refers to B, and the Qingming wind is coming." Qingming Wind is a refreshing breeze. "When I was in 100 questions" said, "Everything grows at this time, clean and bright. So it's called Qingming.

Grain Rain: It means that rain breeds grain. Because rain nourishes the earth and grains can grow, Grain Rain is called "Rain gives birth to hundreds of grains". As the saying goes, "Before and after Grain Rain, you reap what you sow".

7. Changxia: This is the beginning of summer. Since then, everything has grown vigorously. Traditionally, long summer is regarded as one of the most important solar terms when the temperature rises significantly, the summer heat approaches, thunderstorms increase and crops enter the peak season.

8. Xiaoman: It comes from Xiaoman. Summer crops such as barley and winter wheat have already borne fruit, and the seeds are full, but not yet mature, so it is called Xiaoman.

9. Miscanthus: At this time, it is most suitable for sowing grain crops with awns, such as late rice, millet and millet. If you plant awns and crops after this time, it will not be ripe. At the same time, "awn" refers to crops with awns such as wheat and barley, and "species" refers to seeds. Awn seeds indicate the maturity of awned crops such as wheat.

10, Summer Solstice: When the sun is at the "Summer Solstice Point" at 90 degrees of the Yellow Meridian, it is almost directly above the Tropic of Cancer, and the sun is the highest in the northern hemisphere at noon. This day is the longest day and the shortest night in the northern hemisphere. From this day on, it entered the hot season, when everything in the world grew most vigorously.

1 1, Xiaoshu: It's already very hot, but it's not the hottest time yet, so it's called Xiaoshu. At this point, it is already around the beginning.

12, Great Summer: Great Summer is the hottest solar term in a year. Before and after the second volt, high temperature weather of 40℃ often appears in many places in the Yangtze River basin. Do a good job in heatstroke prevention and cooling. There is a lot of rain in this solar term, so we should pay attention to the flood control and waterlogging prevention in the proverb "little summer heat, big summer heat, drowning rats"

13, beginning of autumn: From this day on, autumn began, with crisp autumn air and clear moon. Since then, the temperature has gradually decreased from the hottest time.

14, summer: At this time, the summer heat has come to an end. The heat of summer is about to dissipate. This is the turning point of the temperature drop. It is a symbol of cold climate and indicates the end of summer.

15, Bailu: The weather turned cold and the water vapor on the ground condensed.

16, autumnal equinox: the autumnal equinox is the same as the vernal equinox. The sun shines almost directly on the equator, and day and night are almost equal. From this day on, the position of direct sunlight continued to move from the equator to the southern hemisphere, and the days became shorter and the nights became longer in the northern hemisphere. According to China's autumnal equinox theory, this day is exactly half of the ninety days in autumn, so it is called autumnal equinox. But in astronomy, it is stipulated that autumn in the northern hemisphere begins with the autumnal equinox.

17, cold dew: After the white dew, the weather turned cold and dew began to appear. When it comes to cold dew, there is more dew and the temperature is lower. So some people say that cold is dew, white first and then cold, which means that the climate will gradually turn cold. Water vapor condenses into dew.

18, first frost: it's already cold, and there is frost, so it's called first frost.

19, beginning of winter: beginning of winter. Winter, as the end, means that after a year of field work, crops will be harvested. Beginning of winter, most parts of China are about to freeze, and farmers all over the country will gradually transfer to agricultural activities such as farmland water conservancy capital construction.

20, Xiaoxue: The temperature dropped and it began to snow, but it was not the season of heavy snow, so it was called Xiaoxue. Before and after the light snow, it began to snow. Due to global warming, generally only Shaoguan and Qingyuan in northern Guangdong will snow. Snowfall in some parts of the south is two solar terms later, while the north has entered the freezing season.

2 1, heavy snow: before and after heavy snow, there is snow gradually; It's already the severe winter of "thousands of miles frozen, Wan Li snowing" in the north.

22. Solstice of winter: On the solstice of winter, the sun shines almost directly on the tropic of Capricorn. The northern hemisphere has the shortest day and the longest night, and it begins to enter several cold days. Astronomy stipulates that this day is the beginning of winter in the northern hemisphere. After the winter solstice, the direct sunlight gradually moved northward, and the days in the northern hemisphere gradually became longer. As the proverb goes, eating noodles on the solstice in winter will make the day longer.

23, slight cold: After the slight cold, it began to enter the cold season. Cold air is cold for a long time, and slight cold means that the weather is cold but not extreme.

24. Great cold: Great cold refers to extremely cold weather. Around the Great Cold is the coldest season of the year. The great cold occurred just after March 9 and at the beginning of April 9. As the saying goes, "3949 walks on the ice".