The sentence at the beginning of the ancient poem Ant Manor, which describes autumn.

The opening sentence of the ancient poem Ant Manor, which describes autumn, is: Indus trees are all over the street, and the moon is in the sky.

There is nowhere to find the autumn sleep, and the full-scale phoenix tree is from beginning of autumn by Liu Han in the Song Dynasty. This poem is about hearing the autumn wind rustling outside in my sleep, waking up to look for it, but finding nothing. I saw buttonwood leaves falling all over the steps and bathed in the bright moonlight.

Beginning of autumn is the first 13 of the 24 solar terms, marking the end of summer and the beginning of autumn. In China, beginning of autumn is usually on August 7th or 8th every year. The following is a detailed description of the solar terms in beginning of autumn:

1, the origin of solar terms

Solar term is a time division method formulated by ancient agricultural society in China according to the movement of the sun on the ecliptic. The 24 solar terms divide a year into 24 cycles, and each cycle is equivalent to the time when the sun passes through the ecliptic for 30 degrees in an anniversary. Beginning of autumn was formally established in A.D. 104, which was the date when the sun directly hit the Tropic of Cancer.

2. Climatic characteristics and astronomical phenomena

Beginning of autumn is the transition node from summer to autumn and the last solar term in hot summer. After beginning of autumn, the weather became cooler, the temperature difference between morning and evening increased obviously, and the autumn became stronger. On this day in early autumn, the direct point of the sun in the northern hemisphere gradually moved southward, dropping from 1 1.5 degrees on the ecliptic, which brought about the decrease of sunshine time and the gradual decrease of temperature in the northern hemisphere.

3. Agriculture and products

During the beginning of autumn solar term, farmers began to harvest summer crops, such as rice and corn. At the same time, they will also start planting crops in autumn and winter, such as wheat, cabbage and radish. After beginning of autumn, the weather became cool, which was beneficial to the growth of some crops in cold regions.

4. Diet and health

In beginning of autumn, people should pay attention to diet and health. Because the weather is getting colder and colder, the metabolism of the human body will also change, so we should eat more warm foods, such as ginger, garlic and red dates, to enhance our physical strength. In addition, we should pay attention to keep warm and adjust the schedule reasonably to adapt to climate change.