Aerial photo taken on May 21, 2020 shows Yangdeng-Yelang section of Zheng'an-Xishui highway in southwest China's Guizhou Province. The construction of Zheng'an-Xishui highway, which links Zheng'an and Xishui counties in Guizhou Province, is expected to be completed by the end of 2020. [Photo/Xinhua]