Jo Gwang-jo
Jo Gwang-jo strengthened local autonomy by establishing a self-governing system called Hyang'yak, promoted Confucian writings by translating them into Korean hangul and distributing them widely, pursued a land reform that would distribute land more equally between the rich and poor, and introduced a supplementary system for recruiting talents to the government. He also believed that any talented people, including slaves, should be appointed as officials regardless of social status. As Inspector General, he enforced the laws strictly so that no official dared to receive a bribe or exploit the local populace during this time according to Annals of the Joseon Dynasty.