Why did Qin Shihuang go through all kinds of hardships and still die?

Qin Shihuang was able to destroy the Six Kingdoms because of the "Shang Yang Reform" and the Legalist political system. However, after the national reunification, the legalist practice no longer applies.

One of the most important is the land system. Qin implements the "military service system", and it takes military service to acquire land, and the acquired land needs continuous military service before it can continue to be owned. In peacetime, where did people get so many military achievements? At that time, when there was no land, there would naturally be rebellion. In my opinion, this is the root cause of the demise of Qin Unification II. At that time, the main social contradictions had changed, but the laws and regulations of Qin failed to keep up.

Of course, there are many other reasons for the demise of Qin.

Cultural differences After Shang Yang's political reform, Qin believed in legalism, while Confucianism believed in the six eastern countries. Although the country perished, those doctors who stayed despised Qin Shihuang in their bones. Qin Shihuang went to Mount Tai to worship Zen and was drenched by a heavy rain. The doctors laughed at him to his face. Here we can see how much the six eastern countries don't accept Qin people.

Military Action Qin Shihuang launched two large-scale battles to show his strength or to transfer internal contradictions. One is a war against the Huns. In 2 15 BC, Meng Tian, a general sent by Qin Shihuang, led 300,000 troops to attack Xiongnu in the north. Although this battle consolidated the rule of the north, it caused internal contradictions. 300,000 people is not a small number. This battle also weakened Qin's economy.

In 2 19 BC, Qin Shihuang sent 500,000 troops across the country. This battle has been fought for five years, and the impact on the national economy can be imagined.

Qin Shihuang, who was overjoyed by various projects, also spent a lot of manpower and material resources to build various projects.

Qin Shihuang used 300,000 troops and millions of labors to repair the Great Wall, in addition to Epang Palace, the mausoleum of Qin Shihuang, the way of Qin Dynasty and so on.