Introduction to Bai Gongguan: Bai Gongguan was originally the villa of Sichuan warlord Bai Ju in the suburbs of Shapingba, Chongqing. In 1939, the military command changed it into a detention center directly under the headquarters of the Military Command Bureau. In 1943, the Bai Mansion was renamed the Third Guesthouse of the China-US Cooperation Institute. After World War II, Bai Gongguan was restored as a detention center and was later called the Department of National Defense Security Bureau Detention Center. Bai Gongguan once imprisoned Huang Xiansheng, Tongji University President Zhou Junshi, Liao Chengzhi, CCP member Song Qiyun, Xu Linxia and his wife, and their youngest son "Little Luobotou".