On June 29, the Lanzhou-Wuwei section of the Lanzhou-Zhangye High-speed Railway, which was participated by The First Engineering Bureau of CREC, China Railway No.3 Engineering Group, China Railway No.8 Engineering Group, China Railway Tunnel Group, and China Railway Electrification Engineering Group, was officially opened and operated. The main line of the Lanzhou-Zhangye high-speed railway is about 498 kilometers long, with a design speed of 250 kilometers per hour.