After Qin Shihuang unified the world, why did the Qin Dynasty fall apart so quickly?

In 206 BC, Zi Ying, king of Qin, met born to die, the state of Qin, and presented the imperial seal to Liu Bang. It is only 15 years since Qin Shihuang unified the six countries and gave Zi Ying a seal.

1: Zhao Gao's rebellion

According to Qin Shihuang's will, Qin Shihuang's son Fu Su should succeed to the throne as emperor, but Zhao Gao and Reese tampered with the will in order to win credit (Qin Shihuang's son Fu Su was closely related to Meng Tian, and if Qin Shihuang's son Fu Su succeeded to the throne, the power would be in Meng Tian's hands), killing Qin Shihuang's sons Fu Su and Meng Tian. After Zhao Gao seized power, except Reese and others, the elites of Daqin Empire were basically purged in this power grab.

2. duplicity

Qin founded the country by force and established a complete military reward and punishment system before unifying the whole country. It was supposed to be a martial country, but after Guangwu, Chen Sheng, Liu Bang and Xiang Yu's uprising, Qin Jun was losing ground, and the Tiger and Wolf Division of Daqin Empire completely lost its momentum of sweeping the six countries before.

What I want to talk about here is the army of Qin. Qin Shihuang was indeed an emperor who made great contributions in the ancient history of China, but emperors who often made great contributions were more eager for success.

In order to expand territory, Qin Shihuang ordered generals Tu Youyou and Zhao Tuo to lead 500,000 troops to conquer Baiyue in the south. In the end, although it captured many sites, it also lost a lot of manpower and material resources. Baiyue was not civilized at that time, but shooting it down was not good for the whole country.

In the north of Qin, Qin Shihuang ordered Meng Tian to lead 300,000 troops to attack the Xiongnu in the north. It can be seen that this 800,000-strong army is almost all the military forces of Qin. As a result, after the Guangwu Chen Sheng Uprising, Qin basically lost the territory it once occupied in the six countries.

Later, when the Battle of Julu broke out, we saw that Zhang Han's army was almost pieced together in despair, and its main members were prisoners and laborers. The only regular army of Qin State participating in the war was Wang Li's 100,000 border guards.

When summing up the reasons for the demise of the Qin Dynasty, people always talk about the tyranny of the Qin State, but it is still progressive to study the system and laws of the Qin State carefully in the whole ancient society. Tyranny? It is one of the reasons leading to the anti-Qin in the world, and the desire of the restoration of the six countries is also an important factor.