Background:
1962 and 1967, there were two border military conflicts between China and India respectively. Although China won a military victory in the Sino-Indian border war in 1962, after the ceasefire, China withdrew from the disputed territory it seized, which made India actually control the southern Tibet. However, the defeat of the Indian military on the battlefield made the Indian government decide to implement a "defense plan" near China and India to consolidate the territory occupied by India in the war.
In the 1980s, Indian troops had been deployed at several support points at the frontier, but the communication network leading to these places had not been built. 1980, Indira Gandhi decided to reconsider the security situation in India after taking office as Prime Minister of India. From 1982 to 1983, Indira Gandhi adopted a plan aimed at accelerating the deployment of troops in India's actual line of control to continue to consolidate India's military control here.
Reconciliation: 1987 In May, Indian Foreign Minister Thivaree stopped in Beijing on his way to Pyongyang to attend the meeting of foreign ministers of non-aligned countries, and the Indian Foreign Minister brought a message from rajiv gandhi to Beijing, that is, "New Delhi does not intend to continue to worsen the situation in the border areas". In July of that year, rajiv gandhi said at a rally of supporters of the Congress Party in Uttar Pradesh that "the false reports about the situation on the Sino-Indian border were deliberately spread by some western powers with the purpose of creating misunderstanding and tension between India and China". 1988 12 Rajiv's visit to China is the first high-level visit between the two countries since Zhou Enlai's visit to India in the 1960s. Finally, in 1993, the two countries signed an agreement to ensure peace on both sides of the actual line of control, ending the border crisis.