Injured people receive treatment at a hospital in north China's Tianjin Municipality, Aug. 13, 2015. A series of massive explosions ripped through a warehouse storing dangerous goods in the Binhai New Area in northeastern China's Tianjin municipality at around 11:20 p.m. Wednesday, killing at least 17 and injuring more than 400. Photo: Xinhua

An ambulance sends injured people to a hospital in north China's Tianjin Municipality, Aug. 13, 2015. A series of massive explosions ripped through a warehouse storing dangerous goods in the Binhai New Area in northeastern China's Tianjin municipality at around 11:20 p.m. Wednesday, killing at least 17 and injuring more than 400. Photo: Xinhua

Injured people receive treatment at a hospital in north China's Tianjin Municipality, Aug. 13, 2015. A series of massive explosions ripped through a warehouse storing dangerous goods in the Binhai New Area in northeastern China's Tianjin municipality at around 11:20 p.m. Wednesday, killing at least 17 and injuring more than 400. Photo: Xinhua