The beginning of autumn is the thirteenth solar term of the "24 solar terms" and the beginning of autumn. Dou refers to the southwest, and the sun reaches 135° of ecliptic longitude, on August 7, 8 or 9 of the Gregorian calendar every year. "Li" is the meaning of the beginning; "Autumn" means that the grain is ripe. The change of the whole natural world is a gradual process, and the beginning of autumn is the transition of the gradual harvest of yang energy, the gradual growth of yin energy, and the gradual transformation of yang to yin prosperity. In nature, everything begins to grow from flourishing to maturing.
The beginning of autumn is one of the "four stands", which means the beginning of autumn, the grain begins to ripen, and the harvest season has arrived. "Almanac" said: "Dou refers to the southwest dimension for the beginning of autumn, Yin will start to kill all things, according to the autumn instructions, the valley is ripe." "Saying Wen Jie Zi": "In autumn, the grain is ripe." "The change of the whole natural world is a gradual process, and the beginning of autumn is the transition of the gradual harvest of yang energy, the gradual growth of yin energy, and the gradual transformation of yang into yin prosperity. As "Pipe" said: "The yin qi of the autumn begins to fall, so all things are harvested."
The beginning of autumn does not mean the end of the hot weather, and there is a summer solar term after the beginning of autumn. The beginning of autumn is still in the heat of summer, and the heat has not yet come out, and the second solar term of autumn (the summer heat) is only out of the heat, and the weather is still very hot during early autumn. As the so-called "heat is in the three dog days", according to the calculation method of "three dog days", the beginning of autumn to the summer heat is often still in the "three dog days" period, and the "three dog days" involve the four solar terms of the big and small summer heat and the beginning of autumn and the summer heat. "Dog days" In July and August, the subtropical high is strong, controlling most of eastern China, under the control of the subtropical high, the weather is sunny and hot, so the "dog days" belong to the scorching heat, so it is also the hottest period of the year. Judging from its climatic characteristics, the autumn sun is raging, the beginning of autumn is just the summer, and many areas are still in the heat. The beginning of autumn is the third hottest solar term among the 24 solar terms after the great heat and the small heat.
The beginning of autumn means that precipitation, humidity, etc., are at a turning point in the year, tending to decrease or decline. From the beginning of autumn, the yang energy gradually receives, and everything is introverted. The beginning of autumn and the beginning of spring, the beginning of summer, and the beginning of winter are called "four stands", and they are also one of the "four seasons and eight festivals" in ancient times. Autumn is the season when the grain is ripe and harvested. At the beginning of autumn, in ancient times, the folk had the custom of sacrificing to the god of the land and celebrating the harvest. There are also customs such as "sticking autumn fat" and "biting autumn".
Source: Shenyang release
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