中華人民共和国外交部
In 1963 he became a staff member in the Chinese Embassy in North Korea, he worked there until 1969. From 1969 to 1976, he was a section member in the Asian Affairs of the Ministry of Foreign Affairs of the People's Republic of China, and he was promoted to become its deputy director in 1989. In 1976, he was transferred to Pyongyang and appointed a secretary.