Li Si was a famous politician, writer and calligrapher in Qin Dynasty. Li Si was born in Runan Shangcai (now Shangcai County, Zhumadian City, Henan Province). Reese was a clerk in charge of paperwork when he was young. In the Warring States period when everyone was vying for fame and gain, Reese also wanted to make a career. In order to achieve the purpose of the apprentice, Reese resigned as a petty official and took Xun Qing as his teacher. Xunzi's thought is very close to that of Legalists, and it is also a study of how to govern the country, that is, the so-called "imperial technique." After Li Si finished his studies, he decided to go to Qin after analyzing and comparing the situation in different countries.