Annexation of Tibet by the People's Republic of China: The People’s Liberation Army ceases all military operations in Tibet, ending the Battle of Chamdo.

Tibet came under the control of People's Republic of China (PRC) after the Government of Tibet signed the Seventeen Point Agreement which the 14th Dalai Lama ratified on 24 October 1951, but later repudiated on the grounds that he had rendered his approval for the agreement under duress. This occurred after attempts by the Tibetan Government to gain international recognition, efforts to modernize its military, negotiations between the Government of Tibet and the PRC, and a military conflict in the Chamdo area of western Kham in October 1950. The Chinese government calls the series of events the "Peaceful Liberation of Tibet", despite several thousand casualties being reported by Chinese generals throughout the invasion. The events are known as the "Chinese invasion of Tibet" by the Central Tibetan Administration and by the Tibetan diaspora.

The People's Liberation Army (PLA) is the military of the Chinese Communist Party (CCP) and the People's Republic of China (PRC). It consists of four services—Ground Force, Navy, Air Force, and Rocket Force—and four arms—Aerospace Force, Cyberspace Force, Information Support Force, and Joint Logistics Support Force. It is led by the Central Military Commission (CMC) with its chairman as commander-in-chief.

Tibet, or Greater Tibet, is a region in the western part of East Asia, covering much of the Tibetan Plateau and spanning about 470,000 sq mi (1,200,000 km²). It is the homeland of the Tibetan people. Also resident on the plateau are other ethnic groups such as Mongols, Monpa, Tamang, Qiang, Sherpa, Lhoba, and since the 20th century Han Chinese and Hui. Tibet is the highest region on Earth, with an average elevation of 4,380 m (14,000 ft). Located in the Himalayas, the highest elevation in Tibet is Mount Everest, Earth's highest mountain, rising 8,848 m (29,000 ft) above sea level.