September 13
Lin Biao and his company fled the country and their plane crashed at Undur Khan of Mongolia, killing them all. The downfall of the Lin Biao clique objectively declared the failure of the “Cultural Revolution” both in theory and practice.
October 25
The 26th General Assembly of the United Nations passed the Resolution 2758 with a super majority vote, restoring all the lawful rights of the PRC in the United Nations and expelling forth with the representatives of Chiang Kai-shek from the United Nations and all the organizations related to it. On November 15, the delegation of the PRC for the first time took part in the General Assembly of the United Nations.
October
Zhou Enlai began to preside over the routine work of the Central Committee with the support of Mao Zedong. Later, Zhou Enlai raised the issue of criticizing the ultra-“Left” trend and implementing various Party policies, and work in every field took an obvious turn for the better. In December 1972, the work of adjustment was forced to stop.
December
China’s first domestically developed guided missile destroyer was put into service and commissioned into the army.
From: Chronicle of the People's Republic of China (October 1949 — September 2019) ,edited by The Institute of Party History and Literature of the Central Committee of the Communist Party of China, PP75-76