About 450 teachers from Poreang district, and Prey Veng city of Prey Veng province visited the Extraordinary Chambers in the Court of Cambodia (ECCC) on 5 April, 2018. The purposes of the visits are to understand about ECCC’ legal processing as well as studying more on history of Democratic Kampuchea regime. Moreover, all teachers visit S-21 and Killing Field, Beong Cheung Ek in the afternoon.