An engineer checks the trial high-speed train D5001 after it arrived at the Qiqihar South Railway Station in Qiqihar, northeast China's Heilongjiang Province, July 13, 2015. A high-speed railway between Harbin and Qiqihar in northeast China's Heilongjiang Province, known for its high latitudes and biting cold winters, began a trial operation on Monday. (Photo: Xinhua/Wang Song)
