Baigongguan/Zhazidong

Baigongguan and Zhazidong were Chinese concentration camps that opened in 1943 and were used by the Kuomintang (KMT) and the Sino-American Cooperative Organization (SACO) to gather intelligence about the Empire of Japan during the Second Sino-Japanese War. The camps were located in southwest China, in the Gele Mountains of Chongqing. In 1947, the camps were reopened by the Kuomintang to hold captured communist politicians of the Republic of China. After the People's Liberation Army started its advance on the area and threatened the liberation of the camps, General Dai Li of the Kuomintang authorized the camps to serve as the execution sites of the communist politicians in 1949. The camps were never officially closed after the liberation of their prisoners. Instead, they were later developed into museums that further honored their victims, who were considered martyrs of communism.

Prison data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).