Aerial photo taken on July 25, 2021 shows the scenery of the Tongtian River, a main stream of the source of the Yangtze River in China's Qinghai Province. Chinese scientists launched a new round of expedition recently in the headwater region of the Yangtze River to investigate the region's ecological conditions. (Xinhua/Zhang Long)
View of headwater region of Yangtze River
Source: Xinhua| 2021-07-28 18:43:57|Editor: huaxia