This one contains more pics and videos and describes better: http://www.bbc.com/news/world-asia-china-33896292
According to Chinese state media, the blasts occurred when a shipment of explosives blew up in the port city at about 23:30 (16:30 GMT).
http://www.cnn.com/2015/08/12/asia/china-port-explosion/
A massive explosion shook the northern Chinese city of Tianjin late Wednesday, killing seven and injuring at least 180 people, according to state media.
The explosion erupted at a container port where flammable material was being stored, reported CCTV, China's state-owned broadcaster.
Does anybody actually order anything from China though?