Gwangjong Of Goryeo
Gwangjong (925–975) was the fourth emperor of Goryeo. He was known for squashing his political rivals and creating an atmosphere of fear within the political realm at the time. His real name was "Wang So."
Goryeo met the time of change by ascending of Gwangjong. At his early stage as ruler, he maintained a passive attitude to nobles. However, he became more and more drastic. Choi Seung-Ro said that his regime can be divided into three parts. First is the period of groping. Second is the period of strengthening power, and the last is the period of purge.
Read more about Gwangjong Of Goryeo: First Period - The Period of Groping (949–955), Second Period - The Period of Strengthening Power (955–959), Third Period - The Period of Purge (959–975), Death, Family