This man on the Beijing subway holding a water bottle is worth $24 billion and his sister-in-law once pawned her wedding jewelry so he could buy textbooks. Wang Chuanfu was born in 1966 in Wuwei County, Anhui, into a farming family with eight children. Both parents died before he finished high school. His older brother quit school at 18 to work. His sister-in-law sold her dowry to pay for his gaokao review books. He scored well enough for Central South University, then the top metallurgy…