Attendants wash for nigh shift 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]

Attendant Fu Yufang greets passengers by the special train K4186 for migrant workers at Xiangyang East Railway Station in Xiangyang City, central China's Hubei 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]

Attendant Zhou Yan washes for nigh shift 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]