From 230 BC to 22 BC1year, Qin Shihuang launched a war to destroy the six countries by making Tomochika a distant place to attack, divide and alienate, and unite with others. Seventeen years of Qin Shihuang (first 230 years), nineteen years of Zhao (first 228 years), twenty-two years of Wei (first 225 years), twenty-four years of Chu (first 223 years), twenty-five years of Yan (first 222 years) and twenty-six years of Qi (first 22 1 year). Finally, the first unified, multi-ethnic and autocratic centralized state in the history of China, the Qin Empire, was established, which was also the beginning of the feudal dynasty in China. Qin Shihuang unified the six countries for the following reasons:

First: Ma Zhuang is better than the enemy.

At that time, it was said that there were millions of famous Qin teachers. It has also been said that the state of Qin has "a hundred million wars and a thousand chariots, and if it is advantageous, it will attack and if it is unfavorable, it will defend." This land of kings is also Biography of Historical Records, which shows that Qin has a very powerful force, which is enough to annex six countries and dominate the world. Not only that, from the beginning of Shang Yang's political reform, Qin put "Qiang Bing" in the first place of founding the country, and Shang Yang put forward that "the world is blamed on soldiers" and "Shu Huace".

Second: have a sense of being ahead.

During the Xia, Shang and Zhou Dynasties, the Qin nationality had a close relationship with the Central Plains nationality and became a part of the Central Plains nationality itself. The thought and technology of the Central Plains were the most advanced in China at that time. Qin fully mastered the technology and consciousness of the Central Plains people, and had a deeper understanding of the thoughts and consciousness of the Central Plains people.

Third: carefree.

At the beginning of the founding of Qin, there was a barrier in the east, so we could concentrate on dealing with the Rong nationality (it was the early Spring and Autumn Period, and if it was the Warring States period, Qin might have been destroyed by Jin before it became strong). Rong is still a nomadic people, and the tribes are not United. After all, Qin is a nation from the Central Plains, and it has certain advantages in technology, tactics and ideas, which enables them to defeat the surrounding Rong ethnic groups first. Especially after Daqu was destroyed, Qin had no worries, and had vast land and population to support his war to unify the six countries. Moreover, Qin is located in the northwest of China, separated from the six countries by layers of passes, so it is easy to defend but difficult to attack, which protects the hinterland of Qin from the suffering of war and greatly guarantees production. Chu, the most powerful of the six countries, is relatively far away from Chyi Chin, and its direct strategic threat is not great. The weakest country, South Korea, is closest to Qin, which enables Qin to attack and conquer one by one.

Fourth: make good use of talents.

In the late Warring States period, there were many talents in Qin, including Fan Ju, Bai Qi, Li Si, Shang Yang and Jincon. Although there was a tragedy that Shang Yang was hit by a car, on the whole, Qin was able to give full play to his talents and try his best to be loyal to them. On the other hand, there are countless tragedies similar to Shang Yang in the six countries, which is also the reason why those who get talent win the world.

Fifth, conform to the historical trend.

The king of Qin conquered politics with great talents, enhanced the combat effectiveness of the army, extensively absorbed talents from various countries, and formulated a correct unification strategy. Qin Shihuang's unification of the world is the inevitable result of China's economic and political development and the victory of feudal centralization replacing serfdom.