Legalism was already been adopted by the Qin dynasty before the unification of China. This belief stated that humans are selfish in nature so they need discipline and control. Thus, this kind of principle was applied by the Qin empire to rule China. Shi Huangdi is known to be a cruel leader implementing brutal actions. To unite the states, he abolished some local customs and desired to minimize the differences in language so that everyone could understand each other, further unifying China. Also the Qin empire had made its effort to implement standard weights and measurements and standardized currency. Also, Shi Huangdi had ordered the burning of every single piece of private libraries and books that included teachings not related to the Qin
