Little Cold | The coldness of the day, the warmth of the home

Release time:

2024-01-29 09:35


Little Cold | The coldness of the day, the warmth of the home


Today is a little cold solar term

That means we're in the middle of winter.

On such a cold day,

Send my greetings to you

A small cold is approaching, pay attention to keep warm!



We often refer to the small cold and the big cold as the midwinter, "the small cold and the big cold, frozen into ice masses".


As the climate changes, although almost every solar term is warming, the three coldest solar terms are always:The first small cold, small cold is the coldest solar term in the 24 solar terms, although it is called small cold.Second place is cold and third place is winter solstice.
Why will the small cold solar term called uncrowned king?
Two reasons:
1. it is the coldest, colder than the big cold, but only called a small cold.
2. it is the easiest to snow, it is easier to snow than light snow, but its name is not related to snow.
During the light cold season, sunshine and precipitation began to rebound at the bottom, and it was a strong rebound. But the temperature continues to bottom out and the winds are getting more manic.
Therefore, the weather with a little cold, according to Tao Yuanming, is:"The wretched wind,Fogging [y y y, dark]Snow on the day.Snowy, almost normal. Even in broad daylight, the sky is gloomy. "Jingfei is often closed during the day." People can only hide in the house all day, "separated from the world", and let themselves "closed" and completely isolated from the world.
In the middle of winter, the countryside is no longer elegant, only cold.Often "three nine twenty-seven, hedge head blowing chestnut[Bì Lì, Ancient Musical Instruments], forty-nine thirty-six, sleep at night like sleeping rough ". The wind roared and the fence made an instrumental sound.
The question is, since the small cold is colder than the big cold, is the coldest solar term in the 24 solar terms, then why is it still called the small cold? Is it the ancients who made a mistake?
On this issue, perhaps because--
First, we measure cold according to the temperature. When it is cold, it is the coldest, so it is said that it is the coldest. The ancients measured the cold according to the thickness of the ice layer. The ground was the hardest in the severe cold, so the severe cold was the coldest.
Second, the ancients defined the degree of cold, but also based on people's subjective feelings. In a small cold, although the weather is very cold, people's tolerance is fair and they don't feel extremely cold. When it comes to the severe cold, even if the temperature does not become lower, people have been tortured by the cold and tired, and may feel colder in the severe cold.
Third, the ancients believed in the concept of "things are extremely opposite". As long as summer starts to cool, it is autumn. As long as winter starts to warm up, it is spring. Two extreme seasons, the peak is always at the end. Therefore, the last solar term in winter has won the name of "big cold", while the coldest solar term can only be condescended to be called "small cold.
It is not necessarily the fallacy of the ancients to determine who is colder in the small cold and the big cold, but the main reason is that the ancient and modern perspectives for measuring the cold are different.
There may also be a reason whyDuring the pre-Qin period when the twenty-four solar terms began to sprout and were founded, the Central Plains region may indeed be colder than the small cold.To sum up, the coldest solar term is the small cold.
The arrival of the small cold
Means the coldest day of winter is coming
It is at this moment that winter is thick and thin.
Little chilly material
A Spring for a New Year
The literati


Will the perception of cold
Sprinkle into the poetry


Little Cold · Cold Words



All the springs are frozen, and I chant the cold more.
Leaning on Qiao Song in the middle of the night, I don't think it's full of snow.
-Tang Meng Jiao's "Bitter Cold Sing"








The general's fox fur is not warm,
All protect the treasure knife frozen to break.

-Tang Cen Shen's "Tianshan Snow Song Sends Xiao Zhi to Beijing"




Small cold, big cold, solar term, cold, coldest, ancients, beginning, is, temperature

Yuan Lei's Little Knowledge | Performance Requirements and Types of Fillers for Coatings


Fillers in coatings are usually white or slightly colored pigments with a refractive index less than 1.7. It has the basic physical and chemical properties of pigments used in coatings, but due to its refractive index being similar to the film-forming material, it is transparent in coatings and does not have the coloring and covering power of coloring pigments. It is an indispensable pigment in coatings.

Yuan Lei's Little Knowledge | Application Effects of Different Mineral Powder Materials in Coatings


In architectural coatings, commonly used mineral materials include barium sulfate, calcium carbonate, kaolin, mica powder, talc powder, quartz powder, silica micro powder, transparent powder, glass powder, wollastonite powder, etc. Reasonable application of various mineral materials can effectively improve or enhance the performance of coatings. Let's take a look at the application of different mineral materials in coatings.

Yuan Lei's Little Knowledge | Characteristics of Mineral Materials


Mineral materials refer to the material products obtained by processing and transforming natural minerals (mainly non-metallic minerals) or rocks as the main raw materials, or minerals or rocks that can be directly used as materials and aim to utilize their main physical and chemical properties. This meaning mainly includes the following four aspects: first, natural minerals and rocks that can be directly utilized or processed to be utilized; Secondly, finished or semi-finished materials made mainly from natural non-metallic minerals and rocks through physical and chemical reactions; Thirdly, artificially synthesized minerals or rocks; Fourthly, the direct utilization targets of these materials are mainly their own physical or chemical properties, not limited to individual chemical elements.