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    Beijing, CHINA: Construction workers walk past the boarded up construction site of the new Central Chinese Television (CCTV) Tower, 01 April 2007, in Beijing, as seen on the billboard behind. State-owned CCTV's futuristic 55,000 square meter headquarters rising up to a height of 230 meters is one of many projects to be completed for Beijing's 2008 Olympics, and will be among the first of 300 towers to be constructed in Beijing's new Central Business District. Much of China's economic success has been built on the backs of its vast migrant labour force. AFP PHOTO/Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)