In August 1961, he served as the President of the Academic Affairs Department of Kim Il-sung University and as the Chairman of the Geodetic and Geophysical Committee of the Academy of Sciences.

In November 1970, he was promoted to a member of the Central Committee at the 5th Party Congress, and on March 25, 1971, by decree of the Presidium of the Supreme People's Assembly, he was appointed Deputy Prime Minister of the cabinet.

In March 1973, he was by-elected as a candidate member of the politburo, and on September 20, 1973, by decree of the Central People's Committee, he handed over the position of Chairman of the National Planning Commission to Hong Song-nam.

In March 1976, he served as a member of the funeral committee following the death of Nam Il, May 1976, Hong Won-gil, September 1976, Choe Yong-gon, and January 1980, Ro Tae-sok.

In April 1982, he served as a funeral director, Choe Hyon in January 1983, Kang Ryang-uk, and in September 1983, Kim Il-dae.

However, he was dismissed from the deputy prime minister in December 1983, and it appears that he was also recalled as a candidate for the Politburo and assumed the position of chairman of the national science and technology committee.