Milestones in China's high-speed railway development

By the end of 2016, China has the world's longest railway network, 22,000 kilometers, about 60 percent of the world's total.

File photo taken on Nov. 3, 2015 shows a bullet train running through a bridge on the Lanzhou-Xinjiang high-speed railway, northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Cai Zengle)