Photo taken on July 13, 2017 shows an oil well site in Dushanzi, which is also the starting site of Dushanzi-Kuqa highway in northwest China's Xinjiang Uygur Autonomous Region. The Dushanzi-Kuqa highway, which crosses Tianshan Mountain, is dubbed "the most beautiful highway in Xinjiang". (Xinhua/Jiang Wenyao)