1. Waking of Insects?.
Jingzhe is the third solar term, which refers to when the sun reaches 345° of ecliptic longitude, which is March 5 or March 6 every year in the Gregorian calendar.
Animals and insects have been hiding in the soil since the beginning of winter. They do not drink or eat, which is called "sting". At this time, the weather gets warmer and the earth spring thunders, and "jingzhe" means that the sky wakes up with thunder. Hibernation of hibernating animals. At this time, most areas in China enter the spring plowing season.
2. Guyu.
Grain Rain occurs every year in the third month of the lunar calendar, that is, from April 19 to 21 of the solar calendar, when the sun reaches 30 degrees of ecliptic longitude. During this solar term, the weather is mild and rainfall increases significantly, which is of great help to the growth and development of cereal crops.
Grain Rain is the sixth solar term, the last solar term in spring, and the only solar term that closely corresponds to phenology, season and farming. "The Qingming Festival cuts off the snow, and the Grain Rain cuts off the frost." The arrival of the Grain Rain solar term means that the cold wave weather has ended, which is very conducive to the growth of cereal crops.
3. End of summer heat.
The end of heat is around August 23 (22nd to 24th), when the sun reaches 150° of ecliptic longitude. At this time, the summer weather has passed or is coming to an end, so it is said that "the summer heat has ended here." There is a Chinese proverb, "After the summer heat comes, the cold comes", which means that the heat of summer gradually subsides. Since then, temperatures have gradually dropped in areas north of the Yangtze River in China. However, southern China is still hot because of its lower latitude.
4. Frost.
Frost means that the weather is getting colder and frost is beginning to fall, and it is the eighteenth solar term. Every year at the end of September (October 23 or 24 in the Western calendar), frost falls when the sun reaches 210° of the celestial longitude. It has entered late autumn and is the last solar term of autumn. Generally speaking, changes can be felt in most parts of China at this time. The coolness and chill, the intense heat of summer have completely disappeared, and the typhoon season in coastal areas has also ended.
5. Great Cold.
Dahan is the last solar term among the twenty-four solar terms, which falls between January 19th and 21st every year. The sun is located at 300° longitude. Affected by the cold wave from Siberia, East Asia is usually the coldest period of the year.
Meteorological observation records in recent years show that in some areas of China, the major cold is not as good as the minor cold. However, in some years and in a few coastal places, the lowest temperature throughout the year still occurs during the major cold solar term.
Baidu Encyclopedia - Jingzhe
Baidu Encyclopedia - Guyu
Baidu Encyclopedia - Summer Season
Baidu Encyclopedia - Frost Descent
p>Baidu Encyclopedia——Great Cold