(VOVworld) – An exhibition themed “Border-Sea and Islands of Vietnam” opened on Sunday in Thua Thien Hue province. Displays focus on 5 main topics: Vietnam’s sea and islands territories, national border security, Thua Thien Hue with the tasks of defending sea and island borders of the fatherland, border, sea and islands and soldiers, and Hoang Sa (Paracel) and Truong Sa (Spratley) of Vietnam. Documents and photos include a 100-year-old map of China’s Qing dynasty, which defined Hai Nan islands as China’s southernmost territory and the official document of reign of King Minh Mang in 1838, which confirmed Hoang Sa as belonging to Vietnam’s sovereignty. Phan Tien Dung is Director of Thua Thien Hue province’s Department of Culture, Sports and Tourism. He said: “This exhibition provides viewers with necessary information about how Vietnam’s sea and islands territories are protected. There are more 400 photos and documents that we have collected and a collection provided by the Ministry of Culture and the Naval Forces.”