Why did Ying Zheng say to Fu Su, "You still let me down after all"?

As the first emperor who founded the country, Ying Zheng’s ambitions and strategies are definitely not as simple as most of us think. Let’s make a guess here. First of all, what Ying Zheng wants to confirm is definitely not as simple as knowing who wants to rebel. What he wants to know or confirm is that his son Fusu is not qualified to be an emperor (whether he has the skills to control power) . In fact, Ying Zheng saw the clues to the matter early on. It can be seen from the fact that he asked Li Si, "Is this what you really think?" Therefore, the First Emperor gave Fusu full authority to take charge of the Spring Festival Ceremony. The purpose is to see how his son Fusu responds to this murder. Do you still remember the conversation between the First Emperor and Fusu in episode 22 about Bai Qi? The following is the content of the conversation: Shihuang: Do you know Bai Qi? Fu Su: The most famous general in the Qin State, he was known as the massacrer. Later he took credit for his own arrogance and attempted to rebel. However, he failed and committed suicide by taking poison out of fear of crime. First Emperor: Yes, this is the record of the historian. However, there are still some that have not been recorded. Before committing suicide, Bai Qi once had a conversation with the late King Zhao Xiang. Bai Qi asked: What crime am I guilty of? I have never thought of rebellion. The late king replied, I know that you have not thought about rebellion, but you have the ability to rebel. This is your sin! As my eldest son, you have been burdened with such a sin from the first day you were born. Born in the Emperor's Garden, this is an innate sin... This has been made very obvious. It means to warn Fusu that you are in the Emperor's Garden, at the center of power, and cannot escape, so you must have the ability to control power. And what about Fusu? Let’s talk about Fusu in Mingyue during the Qin Dynasty. Fusu was kind-hearted and considerate of the people of the six countries. In today’s words, if he becomes the emperor in the future, he will definitely be a gentle and gentle monarch who wins the hearts of the people. But it is a pity that Fusu was not born in a peaceful environment. Various interests and rights within the empire were complicated and entangled, so he must have the same imperial skills as the First Emperor to control power. But look at the following actions of our Master Fusu. Fusu has always been passive in the "Palace Fight" and has no idea about the murder at the Spring Festival Ceremony, let alone taking full precautions. He can't even protect himself. . Maybe you will say that Fusu also tried his best. Fusu sacrificed his life to save his father, which is commendable for his courage. But sacrificing one's life to save his father is something that any filial son will do. This can only be said to be filial piety, not ability. Ying Zheng knew his son well. He understood that Fusu was capable of governing the country, but his fighting skills and political sensitivity were insufficient. He asked Fusu to take over the Spring Festival Ceremony just to see how Fusu had experienced various previous events. Whether it has grown up, it is precisely because Fusu, as Ying Zheng's successor in the future, disappointed the First Emperor. As for Ying Zheng's handling of this matter (external responsibility and meritorious service), I agree with Zhiyou's view. This reflects Ying Zheng's political ability and foresight. Because there was no evidence of the assassination during the memorial ceremony, it was difficult to find out the cause of the incident, but the purpose was obvious, which was to frame Fusu until Fusu died. Therefore, in order to protect and train his son, the First Emperor sent him to Mengtian outside the Great Wall to resist the Huns and perform meritorious service. Why do we say protection and experience? Because Meng Tian controls the most elite force in the empire - the Golden Fire Cavalry, it is equivalent to letting Fusu take charge of the most elite force in the empire, and at the same time letting the most powerful force in the empire (Meng Tian with military power) support Fusu. If there are changes in the palace in the future, It would also allow Fusu to be pacified smoothly. But there are no ifs in history. Everyone knows the ending. Fusu committed suicide because of the false edict, so power is a cup of poison. Without the corresponding container, it can only perish.