The exhibition marks the 50th anniversary of the liberation of revolutionary soldiers imprisoned by the US-backed regime in the South (1973-2023) and the 48th anniversary of the reunification of Vietnam (April 30, 1975). After the Paris Peace Accords were signed in late January 1973, the exchange of inmates and political prisoners between Vietnam and the US began in February 1973. Exchanges took place at many different locations, including the Thach Han River in the central province of Quang Tri.  Two exchange programmes with historical witnesses will be held at Hoa Lo Prison on March 16 and 21./.