Jo Gwang-jo
Jungjong worked hard to wipe out the remnants of the Yeonsangun era by reopening the Seonggyungwan, royal university, and Office of Censors, which criticizes inappropriate actions of the king. However, during the early days of his reign, Jungjong could not exert regal authority freely because those who put him on the throne exercised immense power. When the three main leaders of coup died of old age and natural causes eight years later, Jungjong began to assert his authority and carried out a large-scale reformation of the government with help of Jo Gwang-jo and other Sarim scholars.