Jiuzhou Avenue in Chengguan District. According to Baidu map information, Lanzhou First Guard is located in Kyushu Avenue, Chengguan District, Lanzhou City, Gansu Province. The detention center is an organ that detains criminal suspects and defendants who have been arrested and detained according to law. A criminal sentenced to fixed-term imprisonment of not more than one year, or a criminal whose remaining sentence is not more than one year, may also be supervised by a detention center.