A 'highway' built in ancient China, more than 700 kilometers long, can still be seen today

Mention Qin Shi Huang, people will think of all kinds of brilliant achievements. This is indeed the case. If he hadn't unified the six countries and established the feudal dynasty system, then the history of China would have ended the situation of separatism in various places so quickly. And after he realized the unified empire, he created various landmark systems, which had a great influence on the development of later generations.

However, Qin Shihuang's policy towards culture has always been criticized. So far, there are still many people who have objected to his move to burn books and pit scholars, believing that this is the biggest stain in his political career. In fact, aside from this point, Qin Shihuang made a great contribution to Chinese history. Under his leadership, world-famous buildings such as the Great Wall of China, Terracotta Warriors and Horses and Epang Palace emerged one after another. The building to be introduced today is 700 kilometers long, but there has been no grass for more than 2,000 years.

Qin Zhidao

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Introduction of Qin Zhidao

Qinzhi Road is known as the earliest expressway in China because it is more than 700 kilometers long and passes through many cities.

. It is reported that the widest part is about 60 meters, and other places are also about 20 meters. The whole journey passes through 14 locations, starting in Xianyang and ending in Baotou City, Inner Mongolia. It can be seen that it is also reasonable to call it the originator of the highway. This project has been completed for more than 2000 years, but there is still no grass. In this regard, many people put forward their own ideas. Some people think that it is caused by cutting corners during construction, others think it is caused by years of frequent use, and some people think that the reason why Qin Zhidao is barren is because of the harsh environment in the area it passes through. big relationship.

The reason for no grass

In fact, everyone's guesses have certain basis, but the possibility of cutting corners and frequent use is extremely low. It is worth mentioning that, according to relevant records, Qin Shihuang attached great importance to the construction of Qin Zhidao, and dispatched as many as 200,000 workers. In the process of transporting materials, building blocks and other links, there are supervisors involved. In addition, the court ministers are also supervising the whole process of line selection, construction and construction of post stations. It is not so easy to cut corners under the guard at all levels. So this speculation was quickly rejected.

With the conscientious work of more than 200,000 people, Qin Zhidao still took 4 years to complete the construction. There is some truth to the frequent use, because historical data show that,

The Qin Zhidao provided great convenience for the troops stationed in the frontier, and the common people who passed by often used this road.

That is,

Qin Zhidao has been crushed by countless wheels. Under these heavy pressures, the soil will only become more solid.

. As mentioned earlier, in addition to the army, the common people often use the road. According to historical records, the surrounding area of ​​Qinzhidao was once very rich, and after its completion, it promoted the development of merchants' commerce and trade.

After walking on the Qinzhi Road, the merchants can enter more than a dozen counties to conduct transactions, which greatly saves the time spent on the road. From this point of view, the possibility of adverse environmental impact is the greatest. Qin Zhidao is in the northwest region, and the climate environment in the northwest region is very harsh, and it is not suitable for the growth of plants. In addition, the land in the northwest is not very fertile, and it is also mixed with a large amount of yellow sand. Under the impetus of various factors, the land situation will only get worse. Coupled with the heavy rains in summer, which washed the ground, the Northwest has formed an environment that is extremely difficult to grow plants.

At the same time, Qin Zhidao did not do ordinary soil, but crushed the soil, dried it in the sun, and mixed it with white lime to create a strong alkaline effect. This kind of soil is more solid after rolling, and it is impossible for plants to take root here.