Guardians of the Lanqing Railway at Laoya Gorge: A Lifeline to the Qinghai-Tibet PlateauOn February 28th, a biting wind swept across Laoya Gorge in Ledu District, Haidong City, Qinghai Province. Bridge and tunnel workers from the Xining Engineering Department of China Railway Qinghai-Tibet Group were engaged in a crucial task mountain sweeping and rock clearing...