In late 1977, at the 11th National Congress of the Communist Party of China (12–18 August 1977), the politically-rehabilitated Deng Xiaoping was appointed to manage internal modernization programs. Avoiding attacks upon Mao Zedong, Deng's political moderation began the realization of Chinese economic reform, by way of systematic reversals of Mao's inefficient policies, the transition from a planned economy to a socialist market economy.[62][63] In the 1980s, the PRC pursued Realpolitik policies, such as "seeking truth from facts" and the "Chinese road to socialism", which withdrew the PRC from the high-level abstractions of ideology, polemic, and the Marxist revisionism of the USSR, which diminished the political importance of the Sino-Soviet split.[62][63]