How many years did Qin Shihuang live after unifying the six countries? What achievements has he made in these years?

Qin Shihuang (259-2 BC10) unified China in 22 BC1and lived for 12 years.

1. After Qin destroyed the six countries, it built the Great Wall in the north and recruited more than 400,000 civilian workers every year. At that time, the productivity was extremely low, so men could not eat bitterness and women could not knit clothes. So many people are recruited to engage in unproductive labor, and the only result is that the death toll cannot be counted. Thousands of miles away, there are corpses everywhere, and rivers of blood are flowing. It is not surprising that five out of ten households want to rebel. The folklore of "Meng Jiangnu cried down the Great Wall" also reflects the complaints of ordinary people about the construction of the Great Wall from one side.

The Great Wall, which stretches across Wan Li, is not only a single wall, but a complete defense engineering system composed of various fortifications such as the wall, watchtower, Guancheng, Dunbao, Yingcheng, Wei Shuo and Zhencheng beacon tower. This national defense engineering system is commanded and controlled by military command systems at all levels. Taking the Ming Great Wall as an example, nine military jurisdictions, Liaodong, Yuji, Fu Xuan, Datong, Shaanxi, Yulin, Ningxia, Guyuan and Gansu, were set up on the defense line of the Great Wall in Wan Li, and the Great Wall with a total length of more than 7,000 kilometers was defended and restored, starting from Yalu River in the east and reaching Jiayuguan in the west. It is called "Nine Borders Town", and each town has a company commander as the military chief of this section of the Great Wall, under the command of the Ministry of War. The defensive forces along the Great Wall in the Ming Dynasty were about 1 10,000 people. The company commanders are generally stationed in the town, while other officials at all levels are stationed in health centers, city camps, Guancheng and enemy towers and piers on the city walls.

2. Burn books to bury Confucianism

At that time, hundreds of schools of thought contended in society, which seriously hindered Qin Shihuang's thought of unifying the people of six countries and threatened the rule of the Qin Dynasty. Therefore, in order to unify the thoughts of the people of the original six countries, Qin Shihuang began to destroy all the hundreds of works except the legalists that year, and only allowed the people to leave books on medicine, divination and planting. It was not until the demise of the Qin Dynasty in 206 BC that it was called "book burning".

In the second year after the book burning began, that is, 2 12 BC, Qin Shihuang killed more than 460 Confucian scholars and alchemists in Xianyang, Qin Dou at that time, in order to further repel different political ideas and opinions, which was known as "pit Confucianism" in history.

3. In the first 222 years, Qin Shihuang began to build a large-scale chidao with Xianyang as the center and extending in all directions, similar to modern expressways. Running in the same lane, the implementation of "cars in the same track", with a width of 50 steps. Chidao has several functions, one is to facilitate traffic and management of the old places of the six countries, the other is to facilitate the supply of the front line of the northern war, and the third is to facilitate the smooth inspection of the first emperor. Except for Qin Zhi Road and Qin Plank Road, most of them were built on the basis of Qin's hometown, the old roads in the Six Kingdoms and the roads built during Qin's conquest of the Six Kingdoms. The famous lanes include Shang Jun Road, Linjin Road, Dongfang Road, Wuguan Road, Qinplank Road, West Road and Qin Zhi Road.

After Qin Shihuang destroyed the six countries, in order to facilitate the transportation of troops and materials needed for conquering Lingnan, he ordered Shilu to dig a canal to connect the Xiangjiang River in the Yangtze River system with the Lijiang River in the Pearl River system. This canal was finally completed from the 20th year of the Emperor (2 19 BC) to the 23rd year (2 15 BC). Lingqu is one of the oldest canals in the world. It has been the main waterway transportation route between Lingnan and the Central Plains for more than two thousand years. Therefore, the project is one of the national key cultural relics protection units.