A place they call school

Tang Siping, 65, seldom enjoys sound sleep and age has little to with it. As the principal of Zhen Xing School, his preoccupation is with his 1,228 students - the children of migrant workers.

Will the school bus depart on time? Is the schools' neighborhood a healthy one? Is the budget being managed well? Such are the questions that keep Tang awake till well into the night.