On this day 51 years ago, on April 4, 1974 (March 12, 1974 lunar calendar), Deng Xiaoping led a delegation to attend the sixth special session of the UN General Assembly. Deng Xiaoping addressed the sixth session of the UN General Assembly. From April 4 to 16, 1974, Deng Xiaoping led the Chinese delegation to attend the sixth special session of the UN General Assembly. On April 10, 1974, Deng Xiaoping addressed the UN General Assembly and comprehensively expounded the theory of "three worlds". Zhou Enlai and others went to the capital airport to see them off