 In the due course of Sino-American rapprochement, China also assumed membership in the Security Council of the United Nations.In the post-Mao period of Sino-American détente, the Deng Xiaoping government (1982–1987) affected policies of economic liberalisation that allowed continual growth for the Chinese economy.The ideological justification is socialism with Chinese characteristics, the Chinese adaptation of Marxism–Leninism.