Photo taken on July 10, 2018 shows the scenery at the intersection of the Rongjiang river and its tributary Langxijiang River in Rong'an County, south China's Guangxi Zhuang Autonomous Region. After heavy rainfalls, the Rongjiang River turned turbid while the Langxijiang River remained clear.(Xinhua/Tan Kaixing)

Photo taken on July 10, 2018 shows the scenery at the intersection of the Rongjiang river and its tributary Langxijiang River in Rong'an County, south China's Guangxi Zhuang Autonomous Region. After heavy rainfalls, the Rongjiang River turned turbid while the Langxijiang River remained clear.(Xinhua/Tan Kaixing)

Photo taken on July 10, 2018 shows the scenery at the intersection of the Rongjiang river and its tributary Langxijiang River in Rong'an County, south China's Guangxi Zhuang Autonomous Region. After heavy rainfalls, the Rongjiang River turned turbid while the Langxijiang River remained clear.(Xinhua/Tan Kaixing)