Afterwards, he attempted to attack the Japanese troops stationed in Yegyo Bridge in Suncheon, but failed due to the uncooperative efforts of the Ming Dynasty men who were reluctant to expand the war. He was a general who conducted the military for seven years during the Japanese Invasion of Korea in 1592, and earned a major in history along with Admiral Yi Sun-shin of the sea. In 1599, he resigned his office due to old age and returned to his hometown. He was awarded the title of Prime Minister, first rank in 1604 (King Seonjo 37), and was designated as Yeongna County, and was named Chungjangsa.