Meng-Ji Railway, namely Zhang Tang Railway, was also called Zhang Railway (Zhangjiakou-Caofeidian) in planning. Construction started in 2009 and was completed on 20 14. The line is designed as the first phase of the third energy corridor in China after Daqin Railway and Huang Shuo Railway, and can be extended to Baotou and Jining in Inner Mongolia Autonomous Region in the long term, with a total length of about 1 000 km and a designed transportation capacity of 200 million tons/year.