 Complete the following phrase:  Kang Sheng ; 1898  16 December 1975 was a Communist Party of China CPC official best known for having overseen the work of the CPCs internal security and intelligence apparatus during the early 1940s and again at the height of the Cultural Revolution in the late 1960s and early 1970s. A member of the CPC from the early 1920s, he spent time in Moscow during the early 1930s, where he learned the methods of the NKVD and became a supporter of Wang Ming for leadership of the CPC. After returning to China in the late 1930s, Kang Sheng switched his allegiance to Mao Zedong and became a close associate of Mao during the Anti-Japanese War, the Chinese Civil War and after. He remained at or near the pinnacle of power in the Peoples Republic of China from 