Photo taken on Sept. 6, 2016 shows CRH high-speed trains to be overhauled at a maintenance center in Zhengzhou, capital of central China's Henan Province. (Xinhua/Li An)
Photo taken on Sept. 6, 2016 shows CRH high-speed trains to be overhauled at a maintenance center in Zhengzhou, capital of central China's Henan Province. (Xinhua/Li An)