Entitled “Sea and Islands in the Heart of the Country”, the exhibition showcases old maps. In which, six were drawn by Viet Nam in the 15th century, 25 were drawn by Southeast Asian and Western countries in the 15th century, and 19 others were drawn and published by China since the outset of the 20th century.

The exhibition also includes nearly 100 photos depicting the activities of local people in support of the nation’s sea and islands.

Director of the Dien Bien Phu Victory Museum Vu Nam Hai said that through Vietnamese and international maps, the exhibition was expected to help visitors understand historical documents on the nation's sovereignty over its sea and islands.

The event is also an opportunity to educate the younger generation about patriotism, national pride and determination to protect national sovereignty, he noted.

During the exhibition, the museum has raised a subscription to assist soldiers on duty to defend the national sea and islands.

The exhibition will runs until the end of June.