China's history is long and long, since the pangu in the Saga Mountains after the achievement of the world has been thousands of years, there are too many scientific and technological technologies in the land of China, but how many people know that in the Qin Dynasty more than 2200 years ago, there are four major scientific and technological technologies that have appeared, the Qin Straight Road, the Qin Dynasty Railway, and the Dujiangyan,
Qin ZhiDao, after the unification of the Six Kingdoms, in order to prevent the war between the Xiongnu in the northern kingdom, ordered the general Meng Tian to lead an army of 300,000 to build a passage of more than 700 kilometers from north to south in Jiuyuan County, Baotou, Inner Mongolia, from the south to the north and south, and the Qin Straight Road was the fastest road from Xianyang, the capital of the Qin Dynasty, to the Yin Mountains in the north, so it was called "straight road". It wasn't until two thousand years later that the world's first universally recognized highway appeared in Germany, and who could have imagined how the Chinese more than two thousand years ago designed and built the Qin Straight Road.
There was a major discovery in the Chinese archaeological community in the last century, archaeologists found ancient railways in Henan. Experts have determined that this is a transportation site of the Qin Empire more than 2200 years ago. The principle of "railway" more than 2,000 years ago is no different from that of today's railways. It's just that the car is not pulled by a locomotive, but by a horse. It was not until the 18th century that the Storton-Darlington Railway in England became the first successful steam train railway. Who knows how Chinese conceived and built railways more than two thousand years ago?
Dujiangyan, a Qin Dynasty man from more than two thousand years ago, Li Bing went to Shudi to take up his post as a county guard, saw that the people of Shudi were living in misery, and led the masses to build Dujiangyan; on the Min River in the western part of the Chengdu Plain of Dujiangyan, On the Min River in the western part of the Chengdu Plain, Li Bing, a qin dynasty man, organized and built a large-scale water conservancy project on the basis of the excavation of the turtle spirit of his predecessors, which consisted of water-splitting Fish Mouth, Feisha Weir, and Baoquankou, and for more than two thousand years has been playing the role of flood prevention and irrigation, making the Chengdu Plain a "country of heavenly capitals" where water and drought flow from people and fertile fields, and the irrigation area has reached more than 30 counties and cities. Covering an area of nearly 10 million mu, it is the world's oldest, the only surviving, still in use, and characterized by damless water diversion, condensing the crystallization of the industriousness, bravery and wisdom of the working people in ancient China.
Two thousand years ago, Chinese relied on his diligence and wisdom to create science and technology belonging to the Chinese nation, and played a huge role in China's long history.