Ceasefire
China had reached its claim lines so the PLA did not advance farther, and on 19 November it declared a unilateral cease-fire. Zhou Enlai declared a unilateral ceasefire to start on midnight, 21 November. Zhou's ceasefire declaration stated,
Beginning from 21 November 1962, the Chinese frontier guards will cease fire along the entire Sino-Indian border. Beginning from 1 December 1962, the Chinese frontier guards will withdraw to positions 20 kilometres behind the line of actual control which existed between China and India on 7 November 1959. In the eastern sector, although the Chinese frontier guards have so far been fighting on Chinese territory north of the traditional customary line, they are prepared to withdraw from their present positions to the north of the illegal McMahon Line, and to withdraw twenty kilometres back from that line. In the middle and western sectors, the Chinese frontier guards will withdraw twenty kilometres from the line of actual control.Zhou had first given the ceasefire announcement to Indian chargé d'affaires on 19 November, (before India's request for United States air support) but New Delhi did not receive it until 24 hours later. The aircraft carrier was ordered back after the ceasefire and thus American intervention on India's side in the war was avoided. Retreating Indian troops, who hadn't come into contact with anyone knowing of the ceasefire, and Chinese troops in NEFA and Aksai Chin, were involved in some minor battles but for the most part the ceasefire signalled an end to the fighting. The United States Air Force flew in supplies to India in November 1962, but neither side wished to continue hostilities.
Toward the end of the war India increased her support for Tibetan refugees and revolutionaries, some of them having settled in India, as they were fighting the same common enemy in the region. The Nehru administration ordered the raising of an elite Indian-trained "Tibetan Armed Force" composed of Tibetan refugees. The CIA had already begun operations in bringing about change in Tibet.
Read more about this topic: Sino-Indian War