Li Rusong
Although the army continued to lose men and battles, the navy successfully cut the Japanese supply line from the sea; Admiral Yi Sun-sin defeated the Japanese fleet several times and did much damage to the supply ships. With the navy blocking supplies, Chinese forces under General Li Rusong arrived, and began to push the Japanese southward, eventually retaking Pyongyang. Konishi Yukinaga successfully blocked a Chinese advance at Battle of Byeokjegwan, and again tried to push the Koreans northward, but the crucial blow came at the Battle of Hangju, where General Gwon Yul defeated the Japanese with a much smaller force. The Japanese then decided to enter into peace negotiations, while both sides continued fighting. During these negotiations Koreans retook Seoul, but the palaces had all been burnt to the ground, so Seonjo repaired one of the old royal family's houses and renamed it Deoksugung, making it one of the official palaces.