How did the ancients deal with dusty weather? What are the measures to stop the rescue?

Historically, tornadoes were generally recorded as black dragons. I remember seeing the legend about the black dragon when I was reading Tomb Raider Notes. Later, I checked some historical records and really found the specific reason of the so-called black dragon. Generally speaking, in ancient society, a tornado swept through, and people's vision and scientific and technological level were not up to standard at all. They only saw a crow and swallowed everything. Ancient history records that thousands of cattle and sheep were directly blown away by this tornado. People mistook it for a black dragon and swallowed the food.

Therefore, the ancients thought that tornado was a terrible existence, a black dragon, and a sanction from heaven to mankind.

I have to say that the imagination of the ancients is still terrible, so how did the tornado come from?

According to the existing geographical knowledge, the so-called tornado and sandstorm actually come from two reasons. One is that the north of China is just at the mouth of the Siberian monsoon, so every time the weather is cold, or cold air goes south, it will inevitably rise in the north of China. This is all wind power, but there is also a lack of power, that is, land structure.

According to historical records, the ancient north was not as barren as it is now, and there were many crops. However, due to the excessive war of the ancients, the Yellow River frequently changed its mouth.

Moreover, according to historical records, under the action of strong wind, the landform of soil has changed, and gullies are connected, forming a further strengthened narrow tube effect. The wind is getting stronger and stronger, so that there is a terrible phenomenon like the black dragon.

So, in the face of such a terrible disaster, what kind of blow have people suffered?

Second, the tragedy of the ancients

In fact, there are many records about the harm of tornadoes in history. However, the ancients thought that this was God's punishment for human beings, so generally speaking, the recorded content seemed somewhat mythical. Whenever a tornado comes, countless people and livestock are directly swallowed up, causing a lot of life and property losses.

In addition, these crazy tornadoes directly destroyed all crop production in the north and caused devastating damage to the agricultural structure in the north. There is also the fact that the north has been in war, and the more the agricultural structure is destroyed, the more chaotic the north will be, the less the economy will develop and the more serious the disaster will be.

So whenever a tornado came, the ancients thought it was a natural disaster and a devastating blow. Some people even built temples and begged the Black Dragon King not to hurt them.

In addition to these terrible records, there is actually an interesting phenomenon in Ming history.

It can be seen that tornadoes are so harmful that they even affect the rise and fall of a dynasty.

Then, in the face of this terrible threat, how should the ancients make defensive measures?

Third, the defense means of the ancients.

According to historical records, in the face of this terrible pressure, the local people have been unable to stop it, so they urgently need the government of the north to manage it, and the earliest period of management is the Southern and Northern Dynasties.

At that time, there were frequent wars in the north and the soil became more and more loose, so it was hit hard by tornadoes. In order to limit this phenomenon and stabilize our political power, the government has formulated the following three policies.

First of all, the first policy is for the army to set up sand prevention obstacles.

We can't imagine that in the war years, the soldiers in the north were overwhelming to set up those so-called primitive grass checkered sand barriers in the yellow sand. Many soldiers suffered devastating injuries and many people died in the process of controlling the sand disaster, but they still established a layer-by-layer sand control system in the north, which provided some protection for the soil structure in the north later.

Second, the second policy is to implement indigenous methods to conserve water on a large scale.

In fact, there are not many records about the ancient flowing water method, but we have seen such descriptions more or less in history books. The army and the government directly adopt new methods among the people, then set up various small wells to preserve all groundwater, and then avoid water depletion in a more soothing way. Most of these methods came from folk indigenous methods, which were accepted by the government and implemented on a large scale at that time. It does play a good role in ensuring groundwater, thus making the soil more dynamic.

Then, the third policy is interest-oriented.

The government clearly stipulates that all people must plant trees, and everyone will be rewarded to varying degrees if they achieve the goal of planting trees and survive. This system is somewhat similar to the period of Emperor Wu of the Han Dynasty, rewarding everyone for raising horses. As long as you keep horses, you can reduce taxes and corvee, and even get official positions. Therefore, under the guidance of the policy, many people voluntarily plant trees in areas with serious sandstorms.