Born in
Dongnae District, South Gyeongsang Province, he acted with
Choi Chang-ik at the
Chinese Communist Party, and in 1941 went to
Yan'an, the home of the Chinese Communist Party, and joined the
Mao Zedong family. After entering Korea in 1945 following its liberation as a result of the
surrender of Japan, he joined the communist armed forces. When the
Korean War broke out, as the rank of Lieutenant General of the
Korean People's Army, he served as the reconnaissance chief and vice chief of staff. At this time, it is said that
Paik Sun-yup, who was the representative of the South Korean military, said "an unmade dog", and maintained a nasty expression even if flies sat on his face for more than an hour to show dignity. On 17 April 1953 he signed on behalf of North Korea the Agreement of Exchanging Sick and Wounded Prisoners of War at the
North Korea Peace Museum in
Panmunjom. Afterward,
Kim Il-sung's position was narrowed in the military dominated by the partisan faction, and he became a diplomat in 1955. Together, they sent a letter to the Soviet Union and China, informing them of the dictatorship of Kim Il-sung and exerting pressure on North Korea. Accordingly, Kim Il-sung canceled the schedule and returned quickly, countering the
August faction incident coup attempt, in which Choe Chang-ik tried to defeat Kim Il-sung, and resulted in the expulsion of the
Soviet-Korean faction and the
Yan'an faction. In September 1989, he
defected to South Korea and testified that Kim Il-sung led the invasion at the time of the Korean War under
Stalin's approval. ==References==