Recent rainstorms create rolling torrents of water at the Detian Falls in Daxin County, Chongzuo City, Southwest China’s Guangxi Zhuang Autonomous Region, May 27, 2019. As the largest cross-border waterfall in Asia, Detian Falls straddle the border between China and Vietnam. (Photo: China News Service/Yang Huwang)

Recent rainstorms create rolling torrents of water at the Detian Falls in Daxin County, Chongzuo City, Southwest China’s Guangxi Zhuang Autonomous Region, May 27, 2019. As the largest cross-border waterfall in Asia, Detian Falls straddle the border between China and Vietnam. (Photo: China News Service/Yang Huwang)

Recent rainstorms create rolling torrents of water at the Detian Falls in Daxin County, Chongzuo City, Southwest China’s Guangxi Zhuang Autonomous Region, May 27, 2019. As the largest cross-border waterfall in Asia, Detian Falls straddle the border between China and Vietnam. (Photo: China News Service/Yang Huwang)

Recent rainstorms create rolling torrents of water at the Detian Falls in Daxin County, Chongzuo City, Southwest China’s Guangxi Zhuang Autonomous Region, May 27, 2019. As the largest cross-border waterfall in Asia, Detian Falls straddle the border between China and Vietnam. (Photo: China News Service/Yang Huwang)

Recent rainstorms create rolling torrents of water at the Detian Falls in Daxin County, Chongzuo City, Southwest China’s Guangxi Zhuang Autonomous Region, May 27, 2019. As the largest cross-border waterfall in Asia, Detian Falls straddle the border between China and Vietnam. (Photo: China News Service/Yang Huwang)

Recent rainstorms create rolling torrents of water at the Detian Falls in Daxin County, Chongzuo City, Southwest China’s Guangxi Zhuang Autonomous Region, May 27, 2019. As the largest cross-border waterfall in Asia, Detian Falls straddle the border between China and Vietnam. (Photo: China News Service/Yang Huwang)