Staff members of railway department clean the snow on the track in early morning in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, Dec. 28, 2017. As several places in Xinjiang were hit by heavy snow from Dec. 27 afternoon to early morning on Dec. 28, local transportation, power and environment departments took measures to reduce the effect of the bad weather. (Xinhua/Bai Fengliang)