Formally known as Qianjin Prison, now renamed to Beijing Municipal Prison Administration Bureau (Qinhe Division, Qianjin Prison), Qianjin Prison used to be No. 7 Farm of Re-education through Labor and located in Ninghe County, Tianjin City. The current Qianjin Prison was merged from three prisons: Qianjin Prison, Qianwei Prison, and Yonghe Prison. Qianjin Prison is the largest among Qinhe Division, occupying 420 acres with building areas of 20,594 square meters and can hold 2,000 prisoners. The prison wall is as high as 7.5 meters.