Tourists splash water to shield from heat at Xiangshan Lake Waterfalls in Yinan County of Linyi City, East China's Shandong Province, July 18, 2018. (Photo: Xinhua/Wang Yanbing)

Tourists experience drifting along Tianchi Valley at Huaying Mountain in Guang'an City, Southwest China's Sichuan Province, July 18, 2018. (Photo: Xinhua/You Qing)

Tourists splash water to shield from heat at Xiangshan Lake Waterfalls in Yinan County of Linyi City, East China's Shandong Province, July 18, 2018. (Photo: Xinhua/Wang Yanbing)

Tourists splash water to shield from heat at Xiangshan Lake Waterfalls in Yinan County of Linyi City, east China's Shandong Province, July 18, 2018. (Photo: Xinhua/Wang Yanbing)

Tourists splash water to shield from heat at Xiangshan Lake Waterfalls in Yinan County of Linyi City, East China's Shandong Province, July 18, 2018. (Photo: Xinhua/Wang Yanbing)