Li Rusong
Li Rusong's first rise of fame was in early 1592, when he managed to defeat a major rebellion at Ningxia. The Ming army had been unable to move the rebels holed up in the city for the first 6 months, but after Li arrived the city fell within 3 months. Li was able to divert the waters of the Yellow River directly into the city, which led to its fall. He was immediately appointed the chief general of the expedition into Korea after this; he led a force of some 36,000 into Korea in the last few days of 1592. Together with Ming administrator Song Yingchang, Li Rusong was generally successful in Korea, first retaking the city of Pyongyang in a direct assault within two weeks of setting off (on January 8 of 1593), and then took back the city of Kaesong a couple week later. As he marched south towards the Korean capital of Hanyang (漢陽) in later January, the Ming army clashed with the Japanese forces in the Battle of Byeokjegwan, which resulted in the Ming army being pushed back briefly. Within two months after this he succeeded in recapturing Hanyang. He ordered Chinese and Korean troops to refrain from killing all Japanese soldiers and grant them the right to retreat.