Photo taken on Aug. 13, 2019 shows a comprehensive inspection train running on the Zhengzhou-Wanzhou railway line in Zhengzhou, central China's Henan Province. The Henan section of Zhengzhou-Wanzhou railway started a joint test on Tuesday. With a designed speed of 350 km per hour, the Zhengzhou-Wanzhou railway is an important part of railway system in Henan Province. The Zhengzhou-Wanzhou railway links Zhengzhou in central China's Henan Province and Wanzhou in southwest China's Chongqing Municipality. (Xinhua/Li An)