Became a Brother to Qin Shihuang

After Qin Fen, a loser in the 21st century, was hit by a car and died, his soul traveled to the Qin Dynasty. Through his own efforts, Qin Shihuang worshiped his brothers and reached the pinnacle of his life. He outsmarted Zhao Gao, deposed Li Si, exiled Hu Hai, supported Fu Su to become the second emperor, and rewrote history. After voluntarily abdicating the throne, Qin Shihuang and Qin Fen, the two brothers, what troubles will they cause in the Qin Dynasty?