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Ever since China adopted the reform and opening up policy great changes have taken place all around China. China is expected to over take the U.S. as the world's largest economy in ten years. CHina has the world's highrest number of annual deaths thriggered by air pollution. Urban chinese earn more than three times as much as those in rural areas, the highest income gap since the start of the refrom in 1978. One in four residents in beijing is a migrant worker, and 67 percent of millionaires surveyed say they are sacrificing health for money.