Beijing Railway Bureau (simplified Chinese: 北京铁路局; traditional Chinese: 北京鐵路局) is a regional railway bureau under the jurisdiction of Ministry of Railway of the People's Republic of China. It supervises the railway network within Beijing, Tianjin and Hebei Provinces[1]. The Beijing Railway Bureau also operates and supervises the expansion of the Beijing Suburban Railway, the commuter rail service linking urban Beijing and surrounding suburbs.