On this day, 38 years ago, July 29, 1987 (June 4, 1987, the Sri Lanka Peace Agreement was signed. Ethnic conflict escalated in Sri Lanka in 1987, and relations between Sri Lanka and India became tense. On July 29, Indian Prime Minister Rajiv Gandhi visited Sri Lanka and signed a peace agreement with Sri Lanka's President Jayawardna to end the four-year-old ethnic conflict in Sri Lanka. The main content is the ceasefire between Sri Lankan government forces and Tamil rebels on July 31; the two northeastern provinces with Tamil majority merged and implemented semi-autonomy; India has sent peacekeeping troops to supervise the ceasefire and ensure that the semi-autonomous regions are not used to engage in activities that undermine Sri Lanka's unity, territorial integrity and national security.