What caused Ying Zheng, the king of Qin, to be so talented?

First, after he unified the six countries, he was arrogant and extravagant, addicted to pleasure, pursued immortality, built Epang Palace, and increased the corvee of the people;

Second, the Qin law is strict, the corvee taxes are too heavy, and the people's lives are hard.

Third, people at that time were still used to the existence of a small vassal state like the Zhou Dynasty, but they could not adapt to the unified country and their ideas were outdated.

Besides, there are many reasons for Qin Ershi's death.