Li Si
During his stay in Qin, Li Si became a guest of Prime Minister Lü Buwei and got the chance to talk to Ying Zheng, who would later become the first emperor of a unified China, Qin Shi Huang. Li Si expressed that the Qin state was extremely powerful, but uniting China was still impossible if all of the other six states united to fight against Qin. Qin Shi Huang was impressed by Li Si's view of how to unify China. Having adopted Li Si's proposal, the ruler of Qin spent generously to lure intellectuals to the state of Qin and sent out assassins to kill important scholars in other states.