Children have fun at a water amusement park in Xuyi County in Huai'an City, east China's Jiangsu Province, July 16, 2018. (Xinhua/Zhou Haijun)

Children have fun at a water amusement park in Xuyi County in Huai'an City, east China's Jiangsu Province, July 16, 2018. (Xinhua/Zhou Haijun)

A child has fun at a water amusement park in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, July 15, 2018. (Xinhua/Tan Kaixing)

Children have fun at a water amusement park in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, July 15, 2018. (Xinhua/Tan Kaixing)

Children have fun at a water amusement park in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, July 15, 2018. (Xinhua/Tan Kaixing)

A child has fun at a water amusement park in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, July 15, 2018. (Xinhua/Tan Kaixing)