Hai Qin (R), a 12-year-old girl of Hui ethnic group, walks with her little sister Hai Ling en route to school, in Kaicheng Town of Guyuan City, northwest China's Ningxia Hui Autonomous Region, October 23, 2009. [Xinhua]

Hai Qin, a 12-year-old girl of Hui ethnic group, hauls a human-draught freight cart after school to help her mother with the arduous farm labors, in Kaicheng Town of Guyuan City, northwest China's Ningxia Hui Autonomous Region, October 22, 2009. [Xinhua]