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"...But last week it was reported that China's richest billionaire is now a woman - 49-year-old Zhang Yin is worth a cool $3.4bn (£1.8bn). The tycoon is the world's richest self-made woman, having built China's largest paper recycling business, Nine Dragons Paper, which was floated on the Hong Kong stock market just six months ago. "
Carlos Slim
Carlos Slim, the richest man in the world
"The son of a Mexico City shopkeeper has built a staggering $59 billion fortune. Fortune's Stephanie Mehta tells the inside story of how he made it to the top."