Ying Zheng, the first emperor of the feudal dynasty in China, was also the first monarch in China to destroy the six countries and realize reunification. Qin Shihuang reigned for 37 years and made outstanding contributions to the perfection of ancient imperial system in China. During the reign of Qin Shihuang, he advocated the county system and abolished the old feudal system. Among them, the county system is still used in China. In military defense, Qin Shihuang spent a lot of manpower and material resources to build the Great Wall of Wan Li to resist foreign invasion. In the concept of governing the country, Qin Shihuang adopted the legalist thought of governing the country and formed a set of centralized thoughts with clear rewards and punishments and comprehensive rule of law.

Judging from Qin Shihuang's method of governing the country, he is undoubtedly a monarch politician with strict law and discipline. His overbearing rule made people all over the world feel scared. Don't such Qin Shihuang Ying Zheng see the ambitions of Qin Ershi and Hu Hai? From the perspective of the national dynasty, he is a monarch and emperor who has all the power, but on the other hand, he is also the father of a child. Hu Hai, as the 18th son of Qin Shihuang, was also the favorite son of Qin Shihuang. Even though Qin Shihuang knew that Hu Hai was ambitious, it was good for a dynasty to be ambitious, but he was afraid that there was no ambition.

Besides, when Qin Shihuang was alive, Hu Hai made filial piety to the extreme, which won Qin Shihuang's favor. At this time, Hu Hai may be the favored son in Qin Shihuang's eyes and one of the spokesmen of his own throne. What Qin Shihuang didn't expect was that after his death, Hu Hai's nature was exposed. He started a palace coup and slaughtered more than 20 people with his brothers and sisters. This tyrannical character is exactly the same as Qin Shihuang. It can be seen from here that Qin Shihuang didn't know that Hu Hai had no ambition, but he was helpless when he knew that he had ambition. This may be the reason why Qin Shihuang didn't kill Hu Hai.