In March 1597, a pirate force led by the Japanese Pirate King (), who was known for his brutality and brutality , aggressively invaded the DPRK. The DPRK was unprepared and was defeated. The king of Joseon complied with the situation and reappointed a generation of famous general Lee Chung Wugong () as the commander of the three navy forces. At this time, there were only 12 poor warships left in the mighty navy who had been on the sea. The generals were extremely pessimistic about the situation of the enemy and us, and they all expressed the emotion of "this battle will be defeated". Li Zhongwu tried his best to fight against the public, ordering people to burn down the army’s supplies for the warehouse, destroy the boat, and call on his subordinates to fight the Japanese pirates to the death with the spirit of "the brave live, the feared die".
Between Mingliang and Jindo Bibojeong, there is a strait with fast currents. When the tide was low, Li Zhongwu sent someone to set up iron ropes and stakes. At the moment of the war, Lord Li Zhongwu took the lead and led the flagship warship to fight alone. In a fierce battle, the enemy command ship and two other warships were sunk. One Piece was killed and the formation was in chaos. At this time, the tide had begun to ebb, and the sea was turbulent eastward, and the Korean warship took advantage of the situation to attack. The Korean warships seized favorable opportunities and fought hard, sinking more than 30 enemy ships, killing more than 4,000 enemies, and severely injuring the Japanese fleet, creating a famous battle in the history of world naval warfare with less victory than more.
