A teacher leads students of an elementary school, which is near the warehouse explosion site, come to school for new semester in Tianjin, north China, Aug. 31, 2015. More than 300 primary and secondary schools in the Binhai New Area began the new semester on Monday after the local government hired workers to repair, clean and disinfect the areas surrounding the schools. Two blasts ripped through a warehouse in Tianjin Binhai New Area on Aug. 12, which killed at least 150 people. (Xinhua/Liu Dongyue)