Zhang Lili, a teacher in northeastern China's Heilongjiang Province who was run over by a bus trying to save two pupils, smiles to a nurse Monday, May 21, 2012. Zhang, whose legs had to be amputated because of the accident, underwent a second surgery Monday to treat infection and other complications. Meanwhile, police in Jiamusi City said the woman driver who caused the crash has been detained and will be prosecuted. [Photo /  Shanghai Daily]