On this day, 51 years ago, April 6, 1974 (March 14, 1974, the lunar calendar), Deng Xiaoping attended the Sixth Special Session of the United Nations General Assembly. Zhou Enlai and others went to the airport to see him off. On April 6, 1974, Deng Xiaoping led a China delegation to attend the Sixth Special Session of the United Nations General Assembly. On April 10, Deng Xiaoping delivered a speech at the conference, comprehensively expounding the theory of "three worlds" and explaining my country's foreign policy. He pointed out: China is a socialist country and a developing country, and China belongs to the third world. China resolutely fights with other countries in the third world against imperialism, hegemonism and colonialism, and regards it as its sacred international obligation. Deng Xiaoping delivered a speech at the 6th session of the UN General Assembly