The S21 Altay-Urumqi Expressway in Fuhai County, northwest China's Xinjiang Uygur Autonomous Region, is open on December 25. It stretches some 343 kilometers and began construction in December 2019, linking the Altay Prefecture and regional capital city Urumqi. This expressway reduces the travel time between Altay and Urumqi to four hours, promoting the economy in regions along the route.