In this image taken from a video footage from AP Video, a woman holds up a photo of her son, a missing firefighter, outside a hotel where officials held a daily media conferences in northeastern ．．． 較多In this image taken from a video footage from AP Video, a woman holds up a photo of her son, a missing firefighter, outside a hotel where officials held a daily media conferences in northeastern China's Tianjin municipality Sunday, Aug. 16, 2015. Angry relatives of the missing firefighters and local residents whose homes are destroyed by the blasts showed up at a government news conference Sunday to demand information and accountability. (AP Video via AP) 較少