During the Joseon Dynasty, Jeju was governed by the local ruling system of the Joseon Dynasty in which the king reigned over the centralized government. People continued to live a hard life amidst the harsh climate, frequent natural disasters and endless invasions by Japanese pirates. Meanwhile, Jeju residents were politically, socially and culturally influenced by outsiders such as officers assigned to posts in Jeju, scholars or politicians who were banished to the island due to political conflicts.