 During the early years of the PRC, he served in the new government as a member of the Central governmental committee, as counsellor at the Ministry of Culture and in various other high-level positions, while maintaining his position as professor of Philosophy at Tsinghua University.However, In 1951-1952, he provided secret information to the US, which was fighting China directly in Korea, therefore losing his position and rights in the government and was expelled by the China Democratic League soon after.At the beginning of the Cultural Revolution, he was hospitalized in the Beijing Railroad Hospital due to his poor health, and was later imprisoned due to his information leak committed nearly 20 years ago.