World's first high-speed railway in extremely low temperatures marks 5th anniversary(3/6)

Technicians maintain a bullet train of Harbin-Dalian high-speed railway in Shenyang, northeast China's Liaoning Province, Sept. 26, 2014. More than 300 million trips had been taken by train running on Harbin-Dalian high-speed railway as of Friday, the 5th anniversary of its operation. (Xinhua/Yang Qing)