During the Warring States Period, the strength of the Qin State was not too strong at that time, and the son of the Qin State at that time, Yiren, that is, the father of Qin Shi Huang, was sent to the Zhao State as a hostage. At that time, Lu Buwei, a business wizard, thought that strange goods were habitable, so he spent a lot of money to make friends with Yiren, and also gave his concubine Zhao Ji to Yiren.
After Lü Buwei's operation, Yiren finally succeeded in returning to Qin and became the king of Qin, that is, the king of Qin Zhuang. For Lü Buwei, King Qin Zhuang was very grateful, let him be the prime minister of Qin, that is, the prime minister, and crowned him as the Marquis of Wenxin. At this time, Zhao Ji also became the queen of Qin, and because of her special relationship with Lü Buwei, the two of them were also disconnected in private.
In 247 BC, King Zhuang of Qin died, and Qin Shi Huang succeeded to the throne. Because he was still young, Lü Buwei took control of the Qin dynasty. As Qin Shi Huang grew up, Lü Buwei was afraid that the matter between him and the Empress Dowager Zhao Ji would be known by the King of Qin, and because Lü Buwei's body could not bear it, he found a very capable person to serve the Empress Dowager at that time, and this person was Chang Yu.
Chang Yu, a native of Qin at the end of the Warring States Period, because of his strong ability in that area, was favored by Lü Buwei and let him enter the palace as a eunuch, that is, a fake eunuch, to serve Qin Shihuang's mother, that is, Zhao Ji. Sure enough, since Zhao Ji had Chang Yu, she would never think about Lu Buwei anymore, and she had fun with Chang Yu all day long.
Because of Chang Yu's super ability, the Queen Mother Zhao Ji was very happy, and she named Chang Yu as the Marquis of Changxin, and gave birth to two sons for him, which has always been hidden from Qin Shi Huang. Later, Chang Yu's power became greater and greater, but he was still not satisfied, and wanted to kill Lü Buwei and even monopolize the power of Qin.
After Lü Buwei found out, he made the first move and told Qin Shi Huang about Chang Yu and the Empress Dowager Zhao Ji. Chang Yu was very frightened, so he led people to rebel, and finally was defeated and arrested, and was tortured by car splitting. Not only that, Qin Shi Huang also went to the harem of the Queen Mother and executed the two sons of Zhao Ji and Chang Yu.
After this incident, Qin Shi Huang not only eliminated Chang Yu, but also gradually took control of the power of Qin, laying the foundation for the subsequent elimination of the Six Kingdoms.