Yi Jong Mu (1360–1425) was a Korean general who led the Oei Invasion to conquer Tsushima Island in 1419. He was noted for leading a fleet of 227 ships and 17,285 soldiers which landed at the Tsushima Island in Aso Bay on June 19, 1419, after initial successes, reaches the village of Funakoshi. Although some contingent of his force was defeated by Japanese in an ambush at Nii, General Sō Sadamori, the Daimyo of Tsushima, capitulated to the Joseon court in September, 1419.