Bullet train 55251 prepares its test run on a high-speed railway linking Xi'an with Chengdu at Xi'an North Railway Station in Xi'an, capital of northwest China's Shaanxi Province, Nov. 22, 2017. The train was expected to arrive in Chengdu, capital of southwest China's Sichuan Province, three hours later. The first full-course test run was carried out Wednesday on the Xi'an-Chengdu high-speed railway, which is scheduled to enter operation within the year. The 643-km line is China's first rail route to run through the Qinling Mountains. With a designed speed of 250 km per hour, it will slash the travel time between the two cities from the previous 16 hours. (Xinhua/Zhang Bowen)