Beijing's road to Olympics glory is built on the sweat and tears of two groups of people whose paths never cross: an army of migrant workers at one end and the country's top athletes at another. Here, three migrant workers take a mid-afternoon nap behind a bus-stop ad featuring top Chinese hurdler Liu Xiang and Jamaican sprinter Asafa Powell. Liu broke the heart of millions of Chinese fans during the Olympics when he limped off the heats for the 110m hurdles.