Railway workers prepare for upcoming 'Chunyun'(2/4)

Railway workers clean passenger cars for the upcoming "Chunyun" at Kunming, capital of southwest China's Yunnan province, Jan 29, 2015. Chunyun is the hectic travel peak surrounding Chinese New Year which falls this year on Feb 19. This year's Chunyun will begin on Feb 4 and last until March 16, but thousands of people have already begun their trek. (Xinhua/Hu Chao)