Photo taken on May 25, 2018 shows the scenery of a gorge in Wushan County, southwest China's Chongqing Municipality. (Xinhua/Wang Quanchao)

Ships are seen sailing in a gorge in Wushan County, southwest China's Chongqing Municipality, May 25, 2018. (Xinhua/Wang Quanchao)

A passenger ship sails in Wuxia gorge in southwest China's Chongqing Municipality, May 25, 2018. (Xinhua/Wang Quanchao)

Photo taken on May 25, 2018 shows the scenery of Wuxia gorge in southwest China's Chongqing Municipality. (Xinhua/Wang Quanchao)