Beginning of spring, Changxia, beginning of autumn and beginning of winter are collectively called beginning of spring, Changxia, beginning of autumn and beginning of winter.

1 and 24 solar terms includes beginning of spring, Changchun, beginning of autumn and beginning of winter. These four solar terms are collectively referred to as Sili. According to the method of dividing seasons in ancient Chinese astronomy, four seasons are the beginning, with independent spring to long summer as spring, long summer to beginning of autumn as summer, beginning of autumn to beginning of winter as autumn, and winter solstice to beginning of spring as winter. Standing, it means starting. So the four solar terms refer to beginning of spring, long summer, beginning of autumn and beginning of winter.

2. beginning of spring is the first solar term among the 24 solar terms in the lunar calendar. When the sun reaches the longitude of 3 15 degrees, it reaches the beginning of spring solar term. Beginning of spring is one of the important traditional festivals of the Han nationality. "Reason" means "beginning". Since the Qin Dynasty, China has always regarded beginning of spring as the beginning of the Meng Chun season. Beginning of spring is divided from astronomy, with spring flowers and flowers; Spring is growth, cultivation and sowing.

As the saying goes, "A year's plan lies in spring", and beginning of spring has been a traditional festival since ancient times. China attaches great importance to it from the official to the folk, and it has a history of more than 3,000 years since beginning of spring ushered in the Spring. In beginning of spring, the Emperor personally led three officials and nine ministers, and the princes and doctors went to the eastern suburbs to welcome the Spring Festival and pray for a bumper harvest. When you come back, you should reward the ministers and make a Bude order to show your kindness to the people. This kind of activity has influenced the common people and made it a national Spring Festival activity for generations.

4. Long summer is the seventh solar term in the twenty-four solar terms of the lunar calendar and the first solar term in summer, which marks the official start of the season in Xia Meng. When the sun reaches 45 degrees of the yellow meridian, it will be a long summer solar term. The bucket refers to the southeast, and the dimension is long in summer. Everything has grown to this day, hence the name Long Summer. Astronomically, Chang Xia said that bidding farewell to spring is the beginning of summer. When the temperature rises obviously, the summer heat comes, thunderstorms increase and crops enter the peak season, people are used to taking long summer as an important solar term.

5. beginning of autumn is the13rd solar term in the twenty-four solar terms of the lunar calendar and the first solar term in autumn, marking the official start of the Qiu Meng season. "Autumn" means cool in summer. When we arrived in beginning of autumn, the phoenix tree began to shed its leaves, so there is an idiom "Autumn is known by falling leaves". Literally, the word "autumn" consists of the word "harmony" and the word "fire", indicating the maturity of the five grains. Autumn is the transitional season when the weather turns from hot to cold, and then from cold to cold.

6. beginning of winter is one of the 24 solar terms of the lunar calendar and one of the traditional festivals of the Han nationality; The time point is between Gregorian calendar165438+1October 7-8 every year, that is, the sun is located at 225 degrees of the yellow meridian. At this time, the sun is located at declination-16 degrees 19 minutes, and the height of the sun at noon in Beijing is only 33 degrees 47 minutes. After beginning of winter, the sunshine time will continue to shorten, and the height of the sun will continue to decrease at noon.

7, Li, also, shows that winter has begun. Winter means the end, which means that the crops should be harvested after harvest. China regards beginning of winter as the beginning of winter. During the period of beginning of winter, the Han people regarded winter solstice as beginning of winter. In order to spend the severe winter, it is necessary to supplement the dietary customs.