A compartment of the 1st high-cold-resistant train is put on tracks at Taipingqiao vehicle base for the subway of Harbin, capital of northeast China's Heilongjiang Province, Oct. 15, 2012. The train, which could continuously run at an environment as cold as minus 38 degrees Celsius, was set onto tracks on Monday. It is estimated that in total six trains like this will be put into operation for subway Line One in Harbin by the end of 2012. [Xinhua]