Da Nang’s Institute for Socio-Economic Development will receive 90 maps which contain evidence of Vietnam’s sovereignty over Hoang Sa (Paracel) and Truong Sa (Spratly) archipelagoes.

The maps are part of a collection belonging to the president of the Institute for Vietnamese Culture and Education in the US, Tran Thang. The maps were published in many countries including Britain, German, Australia, Canada and the US from 1626 to 1980. The collection of old maps comprises of three kinds of maps: 68 maps showing that China did not have Hoang Sa and Truong Sa archipelagoes; six maps indicating that those islands belonged to Vietnam; five maps of the Southeast Asian region showing that Hoang Sa and Truong Sa archipelagoes are under Vietnam sovereignty.