1 October 1949, the People's Republic of China is proclaimed by Mao Zedong (ruled from 1949 until 1976) at TiananmeninBeijing.
13 October 1949, Xinjiang is annexed by the People's Republic of China.
1 May 1950, the Island of Hainan was taken under full control by the PLA.[2]
19 May 1950, the largest archipelago of China - Zhoushan, was taken under full control of PLA.[3]
23 May 1951, the area of Tibet Autonomous Region was claimed by the People's Republic of China.
3 September 1954, The People's Republic of China annexed the Yijiangshan Islands and Dachen Islands from the Republic of China during the First Taiwan Strait Crisis (Battle of Yijiangshan) even as the U.S. Seventh Fleet was patrolling nearby.[4]
21 November 1962, China won the military victory of Sino-Indian War but withdrew to the pre-war boundaries. Since then[clarification needed], India maintains control of North-East Frontier Agency area i.e. Arunachal Pradesh (83,743 km2); China controls areas of Aksai Chin (~30,000 /33,444/37,555 km2) and Trans-Karakoram Tract (5,181/5,180 km2).[citation needed] See article: Sino-Indian War.
25 October 1971, The People's Republic of China replaced the Republic of China (inTaiwan) in the UN seat representing China. The PRC claims Taiwan and Penghu as its own Taiwan Province along with fragments of Kinmen and Matsu in Fujian, despite never having gained control over it. See articles: China and the United Nations, Political status of Taiwan.
1 July 1997, Hong Kong, leased to the British for 99 years, (1,104 km2) returned to Chinese control. See article Transfer of sovereignty over Hong Kong.
1998–1999, the Sino-Russian-North Korean border was fixed.
12 January 2011, the Tajikistan parliament ratifies a deal ceding approximately 1000 square kilometers to China, while China renounces all further territorial claims in Tajikistan.[9][10]
^J.P.D. Dunbabin. The Cold War: The Great Powers and Their Allies
^Jeong, Jae-wal (16 October 2000). "[북·중 국경조약서 내용 요약]" [Summary of the Sino-North Korean Border Treaty]. JoongAng Ilbo (in Korean). Retrieved 3 May 2023.