Uiju

Ŭiju stands near the lower Yalu, on the principal route between Korea and Liaodong. Its frontier position made it a place of both defence and exchange. When Japanese armies invaded in 1592, King Sŏnjo fled here and stayed at the magistrate's residence. In the following century, merchants from Ŭiju traded with Chinese counterparts at the frontier gate, taking advantage of the journeys of Joseon and Qing envoys.