China launches scientific expedition at Yangtze headwaters

Gao Zhiyang, a scientific expedition member from Changjiang River Scientific Research Institute (CRSRI) of the Changjiang Water Resources Commission, observes a fish sample in Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Aug. 8, 2019. Chinese scientists recently launched a scientific expedition in the headwater region of the Yangtze River, China's longest river, aiming to explore the water resources and ecology in the region. (Xinhua/Wu Gang)