Zhao Gao covered up the death of Qin Shi Huang, mainly because his own power was not large enough, and supporting Hu Hai, who was indisputable, was conducive to control. After Hu Hai became emperor, he then used him to eliminate his political enemies one by one, and finally usurped power and seized the throne, embarking on the peak of his life!

Although Zhao Gao said that he had great power and held a high position, he did not have real power, he was just a eunuch! After all, the Jiangshan of the Qin Kingdom was laid down by the Yin family! The State of Qin has gone through hundreds of years from the founding of the Western Zhou Dynasty to the unification of the Six Kingdoms, and the family power is also very large! With Zhao Gao's personal strength, he could not defeat the Qin Dynasty Ying family at all. This man was ambitious, and the idea of being called emperor was definitely not something that existed in a day or two. Because he is Hu Hai's teacher, he has always assisted Hu Hai, and he must know Hu Hai as a person very well. Hu Hai was mostly brainless, greedy and did not understand the art of power, and almost obeyed Zhao Gao. When Qin Shi Huang pit Confucianism, the eldest son Fu Su was sent to the frontier to defend the city because he angered Qin Shi Huang because of his persuasion, and from this time on, Zhao Gao estimated that he had dreamed of being an emperor.
If Fu Su was not sent to the frontier to supervise the construction of the Great Wall, Zhao Gao estimated that he would not have this opportunity. As the eldest son, he should stay in the capital and should not be sent to other places. Being sent to the field is a very serious thing! Fu Su was sent to the outside world heralding a fall of favor and was snubbed by the emperor. Because the State of Qin was relatively special, there was no empress, nor was there a crown prince. Among Yingzheng's sons, everyone had the opportunity to be emperor, and Zhao Gao also saw the opportunity. In addition, at that time, Zhao Gao was favored by Qin Shi Huang and assisted Hu Hai. It is explained that Qin Shi Huang also liked Hu Hai. When Qin Shi Huang traveled, Zhao Gao asked Hu Hai to follow, and Qin Shi Huang did not object, and in the eyes of outsiders, Hu Hai may be the heir to the future throne. Qin Shi Huang went out and died in the sand dunes, and no one expected it. Since no one knew, Zhao Gao first hid the death of Qin Shi Huang and then implemented his plan.
Step 1: It is certainly not okay to fight alone, at that time, Li Si was the second in command of the Qin Dynasty and needed Li Si's support politically. So he plotted against Li Si and conspired with him to make Hu Hai emperor. The second step: Falsely pass on the Holy Will, kill the three most critical people of the Qin Dynasty, and seize the military power. The first was Fu Su, the eldest son of Qin Shi Huang; the second was Meng Tian and the third was Meng Tian 's younger brother Meng Yi. Both of them controlled the most elite troops of the Qin Dynasty, one mastering the border defense army and the other controlling the forbidden army, so it must be eliminated. Step Three: After Hu Hai becomes emperor, he will then use Hu Hai to kill all the members of the Yin family! Step 4: After the Ying family has been slaughtered, get rid of your own political enemies, such as Li Si, must be eliminated! After getting rid of Li Si, he then used the method of "turning deer into horses" to get rid of all the opposition, so that he could completely control the power of the Qin Dynasty. When the time is ripe, kill Qin II and become emperor himself.
Although, Zhao Gao's plan was very meticulous, almost making Hu Hai not see the slightest flaw. However, Zhao Gao was a eunuch after all, and the ministers did not obey him. Therefore, Qin II was killed, and the ministers of the court still did not listen to him. Most of the time was too hasty, Zhao Gao had been in power for a short time, and there were not enough cronies in the imperial court, so he wanted to set up another puppet emperor. However, at this time, the Qin Dynasty had been hollowed out by Zhao Gao, and the building would fall, and it was no longer possible to straighten it out. If Zhao Gao was given time, he would probably be called emperor like Wang Mang. Of course, the history books do not record that he had descendants, even if he became an emperor, at most one emperor addiction will be finished, and in the end he will not escape the fate of being slaughtered.