A worker sweeps the railway bed of a medium-low speed maglev railway line in Changsha, capital of central China's Hunan Province, Dec. 8, 2015. Starting from Changsha South Station in the west, to Huanghua Airport in the east, this 18.5-kilometer-long medium-low speed maglev railway will be on a trial run before long. (Photo: Xinhua/Xing Guangli)
