Beginning of winter solar terms, what does beginning of winter mean and what does beginning of winter stand for?

China is an ancient agricultural empire and attaches great importance to climate change. The most important thing about climate is to eat by the weather.

Long-term observation and verification have accumulated rich climate knowledge and summed up the extremely precious "24 solar terms", which is great wisdom in the process of human civilization.

There are two solar terms in a month. The solar terms in the first half of the month are called solar terms, and the solar terms in the second half are called qi. "Li Si" is in the first half of every month, and it is a festival. "Two points and two arrivals" are both in the second half of the month, and they are all angry.

Because China has a vast territory, 5,500 kilometers from north to south and 5,000 kilometers from east to west. In addition, the terrain is extremely complex, and the climate varies widely from place to place, which cannot be summarized in one sentence.

"Li" means "will come", not "has arrived".

According to the definition of meteorology, when the average daily temperature is below 5℃ for five consecutive days, it enters winter. 5-20℃ is spring or autumn. Above 20℃ is summer.

On the day of "beginning of winter", before the arrival, it was already snowing in the northeast. Are they all from the south or flowers? There is no sign of winter at all!

So, beginning of winter, this is a vague concept.

Similarly, beginning of spring, Changxia and beginning of autumn are vague concepts.