Some people believe that after Qin Shi Huang swept the six kingdoms to unify the world, because he did not kill the nobles of the Six Kingdoms, it led to the revenge of the nobles of the Six Kingdoms after his death, and Qin II died.
So, as for why Qin Shi Huang did not kill the nobles of the Six Kingdoms, I personally believe that there are mainly the following reasons.
The first is that Qin Shi Huang did not want to make too many enemies and affect his pace of unification.
Qin Shi Huang's destruction of the Six Kingdoms was a fairly long process, not something that could be done overnight.
From the destruction of Han in 230 BC to the destruction of Qi in 221 BC, it took a full decade.
If while destroying the country, killing the nobles of the destroyed countries, then this is bound to cause a chain reaction, and other countries that have not been destroyed will definitely unite to defend their families and defend the country, because they will think that anyway, the horizontal and vertical will die, and it is better to fight with the Qin state.
The reason why Qin Shi Huang was able to destroy the Six Kingdoms was that the Six Kingdoms acted independently and attacked each other. If Qin Shi Huang just blindly slaughtered and let the other side surrender and there was no way to live, then the nobles of the Six Kingdoms would definitely fight to the end, and wouldn't Qin Shi Huang have a great plan to self-destruct and unify? So he will not implement a policy of slaughter.
Second, the State of Qin actually took corresponding preventive measures against the nobles of the Six Kingdoms.
After the Unification of the Six Kingdoms by the Qin, in order to prevent the resurgence of the nobles of the Six Kingdoms, they were forced to migrate to Xianyang and let them guard the imperial tombs, or to the marginal areas of the southwest, and some civilians were also relocated at the same time, allowing them to do hard labor such as mining and rock opening.
At the same time, Qin Shi Huang also arranged for local officials to pay close attention to their behavior. In order to eliminate potential safety hazards, he ordered the demolition of the Six Kingdoms Pass. In this way, the six countries will have no danger to each other. Even if the clans of the Six Kingdoms rebelled, they could not form a climate.
Moreover, the cultural policy of writing and writing on the same track implemented by Qin Shi Huang was also eliminating the influence of the nobles of the Six Kingdoms. In time, no one will remember who they are. There was also Qin Shi Huang who ordered the destruction of civilian weapons, even if they wanted to rebel, they did not take advantage of the guys. There was also a state in which Chen Sheng rose up later.
The third point is that Qin Shi Huang was super confident and believed that there was no need to kill all the nobles of the Six Kingdoms.
Qin Shi Huang despised them very much, and the social forces of the nobles of the Six Kingdoms were basically destroyed in the wars of the past years.
When the later King Xiongxin of Chu was found by Xiang Liang, he was herding sheep for others. When Zhao Wang Xie was found by Zhang Er, he was working temporarily hourly work for others, and even the kings of the Six Kingdoms were so miserable, so how good could the nobles of the Six Kingdoms be?
These people are scattered at the bottom of society, have no ability to resist the state power, dare not even say too much, they only want to survive.
In fact, the demise of the Qin state was not due to a tactical mistake in the Six Kingdoms sect, but a problem within the regime, and internal factors led to external factors, resulting in problems in the policy towards the grass-roots level.
In general, the Control of the Qin State over the Six Kingdoms Sect Was Still Successful, they did not dare to boldly rebel, and the real rebels were the low-level people.
Do you have any more interesting insights into why the Six Kingdoms were not slaughtered and the root cause of the fall of the Qin State? We discuss it in the comments section.