“Chen Dandan spends his days suspended hundreds of feet above downtown Shanghai, building one of the city's newest skyscrapers. What gives the 26-year-old migrant worker a sense of vertigo, though, is his daily walk home down Nanjing Road, the city's glitziest shopping street. In soiled, blue overalls and a yellow safety helmet, Chen gawks at a Gucci storefront. At a place called Tomorrow Square, he ogles a red Ferrari whose price tag equals about 80 years of his $3,500 annual income. "All these people may have money," he says, "but we are the ones who are building Shanghai." ”