A sailboarder practices in Jinshajiao area in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, July 18, 2018. (Xinhua/Li Hanchi)

People cool off at waterfalls of Panlong Mountain in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, July 18, 2018. (Xinhua/Li Hanchi)

People cool off at waterfalls of Panlong Mountain in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, July 18, 2018. (Xinhua/Li Hanchi)

A man jumps into water to cool off in Zhaojiajing area in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, July 18, 2018. (Xinhua/Li Hanchi)

Aerial photo taken on July 18, 2018 shows people on the beach in Liuzhou City, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Li Hanchi)