What are the three signs of Beginning of Autumn? How does the climate change after the beginning of autumn?

What are the three signs of Beginning of Autumn? How does the climate change after the beginning of autumn?
The solar terms have a long history in our country. Their existence has promoted the development of farming culture. The Beginning of Autumn is one of the 24 solar terms and is also one of the signs of entering autumn. What are the three signs of Beginning of Autumn? How does the climate change after the beginning of autumn? The sixth month of the lunar calendar is the season when lotus flowers begin to bloom, and lotus flowers are the messenger of June. If you want to know about the sixth lunar month of 2018, please consult the fortune teller website. In ancient my country, the beginning of autumn was divided into three phases: "The first phase is the arrival of cool breezes; the second phase is the appearance of white dew; the third phase is the chirping of cicadas."
Cool breeze arrives: people will feel cool when the wind blows, and the wind at this time is different from the hot wind in summer.
White Dew: There will be fog on the earth in the morning.
The chirping of cicadas: The cicadas that chirp in response to the cold weather in autumn also begin to chirp. Poem "Beginning of Autumn": "A leaf of the Chinese parasol tree heralds the coming of autumn, and the rice fields talk of a good harvest. Although it is not midsummer, the tiger is still crouching, and the cicadas are singing non-stop." (Zuo Heshui) The beginning of autumn generally indicates that the hot summer is about to pass and autumn is about to come. Although the heat is hard to dissipate after the beginning of autumn and there is still the power of the "autumn tiger", the beginning of autumn is also called the beginning of autumn, but the general trend is that the weather is gradually getting cooler. Due to different climates across the country, the start time of autumn is also different. In climatology, autumn begins on the day when the average daily temperature stably drops below 22℃ for five days. This division method is more in line with the actual conditions in various places, but it is quite different from the beginning of autumn date in the middle and lower reaches of the Yellow River.

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