In 238 BC, Ying Zheng, king of Qin, eradicated Lv Buwei, the prime minister, and Laoai Group, a long-time believer, and came to power. With the help of Li Si and Liao Wei, the King of Qin formulated the strategy of "destroying the princes, claiming the emperor and unifying the whole country". Specific measures are: win over Yan Qi, stabilize Wei Chu and eliminate Zhao Han; Outward attack, one by one.
At the end of the Warring States period, the Qin army was invincible and wiped out Han, Zhao and Wei one by one. Qi is far away from Qin. When Qin Jun swallowed it up, he lived alone in the corner and was unprepared for Qin. In 22 1 year BC, Wang Ben led his troops into the territory of qi from the north, avoiding the main force of qi, and the king of qi surrendered without a fight. At this point, Ying Zheng unified the whole country.
It took ten years before and after the Qin Dynasty to complete the unification of China, ending the feudal scuffle since the Spring and Autumn Period and establishing the first centralized country in the history of China.
The unification of the Qin Dynasty provided the people with a relatively stable production environment. The Qin Dynasty carried out many measures to eliminate separatist factors, which laid the foundation for the long-term reunification of China. This has had a great and far-reaching impact on the development of China's history.