Construction of Harbin Metro started on 5 December 2006. The total investment for the first phase of Line 1 is RMB5.89 billion. Twenty stations were planned to be set on this 17.73 km (11.02 mi) long line starting from Harbin East Railway Station to the 2nd Affiliated Hospital of Harbin Medical University in the west of the city. A metro depot, a command centre and two transformer substations will be built along the line. Most of the line's route follows the air defence evacuation tunnel...