Perhaps when it comes to the State of Qin, most people think of Qin Shi Huang, but the first king of the State of Qin, the person who changed his title to King, should also be known, he is the King of Qin Huiwen: Yingsi.

Ying Si was the son of Xiao Gong, and the first thing he did when he ascended to the throne was to get rid of Shang Martin, the number one hero of the Qin State's change of law. In this matter, YingSi is clever. Use the anger of the warrior clan to get rid of shang martingale. One resolved the personal vendetta with Shang Martin, the second consolidated his own position, and the third eased the contradictions between the shi clan. It can be described as killing three birds with one stone.
During the reign of Yin Si, there were many capable people: Gongsun Yan, Zhang Yi, and Sima Que. They are all famous ministers in history. He is also very good at using people. Zhang Yi was used to cross the six kingdoms, lay a strategic foundation, and use Gongsun Yan, Sima Cuo, and others to cut down the Yiqu canal and Pingba Shu. It laid a solid foundation for the unification of Great Qin in the future.
Then when it comes to King Huiwen of Qin, it is impossible not to mention the Eight Sons of the Warring States Red Face, Empress Xuan of Great Qin. It also provided certain favorable conditions for the unification of the Qin state.
In fact, there are not too many records about the later years of Yingsi, which is not clear or detailed. There were a lot of people on him who went crazy. Maybe. Eun Seol is a wise and suspicious king who has lived under high pressure for a long time, and it is understandable that something is wrong with his spirit.
Perhaps, as a Ming Jun, the difficulty of having both the family and the country is the most painful thing in Yingsi's heart.