Soldiers of the Tianjin Garrison rush to repair a road to the core area of explosion site in Tianjin, north China, Aug. 14, 2015. An explosion, which occurred Wednesday night at a warehouse in Binhai, has left 50 people dead and 701 others injured. (Xinhua/Wang Haobo)

Soldiers of the Tianjin Garrison wait to enter the core area of explosion site in Tianjin, north China, Aug. 14, 2015. An explosion, which occurred Wednesday night at a warehouse in Binhai, has left 50 people dead and 701 others injured. (Xinhua/Wang Haobo)

Soldiers of Tianjin Garrison lay a road heading to the core area of explosion site in Tianjin, north China, Aug. 14, 2015. An explosion, which occurred Wednesday night at a warehouse in Binhai, has left 50 people dead and 701 others injured. (Xinhua/Wang Haobo)

Flames are seen at the core area of explosion site to in Tianjin, north China, Aug. 14, 2015. An explosion, which occurred Wednesday night at a warehouse in Binhai, has left 50 people dead and 701 others injured. (Xinhua/Wang Haobo)