A locoman drives a train on the Harbin-Dalian high-speed railway in Changchun, capital of northeast China's Jilin Province, April 21, 2013. The Harbin-Dalian High-speed Railway, the world's fastest railway in frigid regions, started its summer schedule as of April 21, with the speed during the summer period (usually from April to November) lifted to 300 kilometers per hour from 200 in the winter period, cutting the shortest running time between Harbin and Dalian from five hours and 18 miniutes to three and half hours. The Harbin-Dalian high-speed railway was open for service on Dec. 1, 2012. (Xinhua/Zhang Nan)

A Harbin-Dalian high-speed train pulls in at the Changchun West Railway Station in Changchun, capital of northeast China's Jilin Province, April 21, 2013. The Harbin-Dalian High-speed Railway, the world's fastest railway in frigid regions, started its summer schedule as of April 21, with the speed during the summer period (usually from April to November) lifted to 300 kilometers per hour from 200 in the winter period, cutting the shortest running time between Harbin and Dalian from five hours and 18 miniutes to three and half hours. The Harbin-Dalian high-speed railway was open for service on Dec. 1, 2012. (Xinhua/Lin Hong)

A Harbin-Dalian high-speed train arrives at the Changchun West Railway Station in Changchun, capital of northeast China's Jilin Province, April 21, 2013. The Harbin-Dalian High-speed Railway, the world's fastest railway in frigid regions, started its summer schedule as of April 21, with the speed during the summer period (usually from April to November) lifted to 300 kilometers per hour from 200 in the winter period, cutting the shortest running time between Harbin and Dalian from five hours and 18 miniutes to three and half hours. The Harbin-Dalian high-speed railway was open for service on Dec. 1, 2012. (Xinhua/Lin Hong)

A screen on a train running on the Harbin-Dalian high-speed railway shows the speed of 304 kilometers per hour, April 21, 2013. The Harbin-Dalian High-speed Railway, the world's fastest railway in frigid regions, started its summer schedule as of April 21, with the speed during the summer period (usually from April to November) lifted to 300 kilometers per hour from 200 in the winter period, cutting the shortest running time between Harbin and Dalian from five hours and 18 miniutes to three and half hours. The Harbin-Dalian high-speed railway was open for service on Dec. 1, 2012. (Xinhua/Zhang Nan)