Aerial photo taken on Oct. 24, 2018 shows the rotation construction site of a grand bridge of Zhengzhou-Wanzhou railway in Zhengzhou, capital of central China's Henan Province. The grand bridge over Xuzhou-Lanzhou railway completed a rotation construction Wednesday. The 818-km Zhengzhou-Wanzhou railway links Zhengzhou in central China's Henan Province and Wanzhou in southwest China's Chongqing Municipality, with a designed speed of 350 km per hour.(Xinhua/Zhu Xiang)