A military policeman stands guard to keep order in front of lines of people queuing to buy train tickets at Kunming Railway Station in Kunming, Yunnan province January 8, 2012. Chinese New Year, or Spring Festival, is the biggest of two "Golden Week" holidays, giving migrant workers their only chance of the year to return to their home provinces with gifts for their families. More than 200 million people are expected to take to the railways over this year's holiday, the biggest movement of humanity in the world. REUTERS/Wong Campion (CHINA - Tags: TRANSPORT SOCIETY)