Line sweepers keep northwest railways on track
Maintenance workers for the China Railway Lanzhou Group on the Dunhuang Railway line in Gansu province on Jan 12. DU ZHEYU/XINHUA LANZHOU－While most people are still asleep, 24-year-old Song Weiying has already begun his work day as a “sand fighter” in the Kumtag Desert in Northwest China. Also dubbed a “terracotta warrior” or “scavenger,”…