The term « effective line of control » was allegedly used by Chinese Prime Minister Zhou Enlai in a 1959 memo to Indian Prime Minister Jawaharlal Nehru.  The delimitation existed as an informal ceasefire line between India and China after the Sino-Indian War of 1962-1993, when their existence was officially accepted as an « effective line of control » in a bilateral agreement.  1. Both sides believe that the issue of the India-China border must be resolved through peaceful and friendly consultations. Neither party can use or threaten to use violence against the other party by any means. Pending a definitive solution to the border issue between the two countries, both sides are sticking strictly to the line of effective control between the two sides. No activity on both sides shall exceed the effective line of control. If personnel on one side cross the effective line of control if they are notified by the other, they must immediately withdraw from their own line of control. If necessary, both parties jointly review and determine the segments of the effective line of control when they have differing views on its direction. 7.
The two parties agree, through consultations on the form, method, scope and content, of effective inspection and surveillance measures necessary to reduce the armed forces and maintain peace and calm in areas along effective control under this agreement. « For the Chinese side, we have complied with the agreements signed between China and India. We are in favour of peace and stability in the border region. In the meantime, we are committed to our sovereignty and territorial integrity, » he said. The term « LAC » was legally recognized in the Salino-Indian agreements signed in 1993 and 1996. The 1996 agreement states that « no activity by both parties shall cross the line of effective control. »  However, Clause 6 of the 1993 Agreement on Peacekeeping and Calm along the effective line of control in Indian border areas states that « both parties agree that references to the effective line of control of this agreement do not affect their respective positions on the issue of borders. »  Fundamental outlines of the proposal include the withdrawal of armoured personnel within one day of the agreement, the withdrawal of troops from certain areas on the north and south shores of Lake Pangong, east of Ladakh, and the implementation of the review of the withdrawal process by both sides, he said. The Government of the Republic of India and the Government of the People`s Republic of China (hereafter referred to as both parties) entered into this agreement in accordance with the five principles of mutual respect for sovereignty and territorial integrity, non-aggression, non-interference in the internal affairs of the other, equality and mutual benefits, and peaceful coexistence. , and the maintenance of peace and calm in the areas, modelled on effective control in Indian border regions.