Railway staff work at locomotive maintenance center in Ulanqab, N China's Inner Mongolia

Workers assemble components at a locomotive maintenance center at Jining locomotive depot in Ulanqab, north China's Inner Mongolia Autonomous Region, Jan. 15, 2019. Jining locomotive depot carried out maintenance for the key parts of locomotives to secure the Spring Festival travel rush starting from Jan. 21 this year. (Xinhua/Tang Zhe)