Da Nang, June 15 -- An exhibition themed "Hoang Sa, Truong Sa - Sacred Sea and Islands" opened in the central city of Da Nang on June 15, marking World Oceans Day (June 8) and the Vietnam Sea and Islands Week 2026. Co-hosted by the State Records and Archives Department of Vietnam (SRA), the Vietnam Military History Museum, and the Naval Region 3 Command, the three-day event is designed to effectively implement the Prime Minister-approved programme that pushes national archives into the open for socio-economic development and sovereignty protection. In her opening speech, SRA Deputy Director Nguyen Thi Nga declared sea and islands as an inseparable and sacred part of Vietnam's territory. Archival documents, maps, photos, and historical mat...