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It is said that after Ying Zheng swept through the Six Kingdoms and unified China, the name of the state was established as Great Qin, and he ascended the throne as the First Emperor. To be fair, in addition to qin shi huang's great achievements in unifying China, he was also a veritable infrastructure "mad demon". Why? The Great Wall, Zheng Guo Canal, Ling Canal, etc. were all built during the reign of Qin Shi Huang.
After Qin Shi Huang unified the Six Kingdoms, he began to vigorously implement the national development strategy of "book with text" and "car on the same track", and also built the "Qin Straight Road", the road built by Qin Shi Huang has passed more than 2,000 years today, but there is still no weed on the entire road, a thousand-year-old road, why does this happen?
First, when the "Qin Straight Road" was built, the soil used was very exquisite, and at the same time, it was also treated specially. The main source of this soil resource is between Xianyang and Yinshan Mountain Range in Shaanxi Province.
The area it passes through mainly involves the current Gansu, Inner Mongolia and Shaanxi, and in these places, there are two main types of geological soils, one is loess and the other is sand.
This section also includes desert areas, where the soil contains almost no water, and without water it cannot support the growth of plants, so dry sandy soil soil areas generally do not have plants growing.
Let's look at the loess soil, this kind of soil is relatively small amount of water compared to the sandy soil, when the Qin people build the "Qin Straight Road", in order to prevent the growth of weeds in the loess containing water, workers will deliberately set up special cauldrons on both sides of the road when building roads.
Then the carefully selected loess is prepared and put into a large pot for a long time to "stir-fry", before a large amount of salt and alkali will be put into the large pot for stirring, after "frying", the workers will re-bury the loess in the ground.
In addition, when building the "Qin Straight Road", experienced workers will also do one more process, they will spread the treated soil to the ground, but also repeatedly tamp down the soil, the soil after multiple extrusions, become very solid.
Even some of the tightly pressed soils are almost as hard as the stones, and multiple squeezes make the already porcelain soil without any air inside, which directly cuts off the necessary conditions for the growth of wild grasses.
The second point is that the Great Qin Empire has strict laws, construction workers do not dare to cut corners on the project, "Qin Zhidao" belongs to the national strategic military use, once it is discovered who dares to cut corners or use materials to be shoddy.
Then, the fate of those who preside over the construction of the project will be very tragic, and the light will be punished, and the heavy will be the disaster of the family.
The total length of the "Qin Straight Road" is about 700 kilometers, and the person in charge of this great military project is the general Meng Tian. The people who built this road did not dare to fish in muddy waters, so the manpower, material and financial resources were selected from the best, and the quality of the road built could not be bad?
Third, after the completion of the "Qin Straight Road", it has never been abandoned, and it has always played its irreplaceable role after its construction, and there will be special personnel to maintain it.
During the Western Han Dynasty, The Han Wudi Emperor Liu Che led an army of 180,000 to the north to inspect Shuofang, and the path taken by the Han army was the "Qin Straight Road" built by the Qin people. Later, during the Three Kingdoms period, Cao Cao also personally led a large army to force the northern Xiongnu to return Cai Wenji, and when he returned to the Central Plains, Cao Jun also took the "Qin Straight Road".
During the Tang Dynasty, Tang Taizong Li Shimin also personally led a large army to conquer the Turks in the north, and many times he took the "Qin Straight Road", and in these hundreds of years, there was no grass on the "Qin Straight Road", which shows that this project is really powerful.
Fourth, the lack of grass in the "Qin Straight Road" also has a very important relationship with its geographical location, the Qin Straight Road is mainly located in the inland areas of the north, the climate is relatively arid, and the precipitation is relatively small every year.
In such a natural environment, it is very unfavorable to the growth of wild grasses, assuming that this "Qin Straight Road" is built in the southern region, then it is not necessary that it will not grow weeds for hundreds of years.
In the end, in short, "the world has suffered for a long time", although the Great Qin Empire has many negative effects in the history textbook, we have to admit that the Qin Dynasty has indeed made great contributions to our Chinese civilization, and to this day, Great Qin still has a lot of good spirits worth learning from future generations.
References for this article: "History of Qin", "Qin Zhidao", "Great Qin Empire", "Baidu Encyclopedia Related Terms - Qin Zhidao, Qin, Qin Shi Huang, etc."