Attendant Huang Huixin helps a passenger to get off the special train K4186 for migrant workers at Quxian Railway Station in Quxian County, southwest China's Sichuan Province, Jan. 14, 2017. The train, during its 2,084-km-long journey from Fuzhou to Sichuan's Guang'an, took over 2,500 migrant workers home at Fujian, Jiangxi, Hubei, Shaanxi and Sichuan provinces in over 27 hours.[Photo by Jiang Kehong/Xinhua]

Passengers get off the special train K4186 for migrant workers at Guang'an Railway Station in Guang'an City, southwest China's Sichuan Province, Jan. 14, 2017. The train, during its 2,084-km-long journey from Fuzhou to Sichuan's Guang'an, took over 2,500 migrant workers home at Fujian, Jiangxi, Hubei, Shaanxi and Sichuan provinces in over 27 hours.[Photo by Jiang Kehong/Xinhua]

Yang Yalong, a 14-year-old passenger, looks out of the window on the special train K4186 for migrant workers from Fuzhou of southeast China's Fujian Province to Guang'an of southwest China's Sichuan Province, Jan. 14, 2017. The train, during its 2,084-km-long journey, took over 2,500 migrant workers home at Fujian, Jiangxi, Hubei, Shaanxi and Sichuan provinces in over 27 hours.[Photo by Jiang Kehong/Xinhua]