Power supply workers install emergency lights at a primary school served as a temporary shelter after the warehouse explosion in Tianjin, north China, Aug. 14, 2015. Drinking water, food, clothes and quilts are adequate at the shelter. (Xinhua/Zheng Huansong)

People charge their mobile phones at a temporary shelter after the warehouse explosion in Tianjin, north China, Aug. 14, 2015. Drinking water, food, clothes and are adequate at the shelter. (Xinhua/Zhang Cheng)

Photo taken on Aug. 14, 2015 shows food and drinking water supply point at a primary school served as a temporary shelter after the warehouse explosion in Tianjin, north China. Drinking water, food, clothes and quilts are adequate at the shelter. (Xinhua/Zheng Huansong)

A man reads a book at a primary school served as a temporary shelter after the warehouse explosion in Tianjin, north China, Aug. 14, 2015. Drinking water, food, clothes and quilts are adequate at the shelter. (Xinhua/Zhang Cheng)

Staff workers carry boxes of oatmeal at a primary school served as a temporary shelter after the warehouse explosion in Tianjin, north China, Aug. 14, 2015. Drinking water, food, clothes and quilts are adequate at the shelter. (Xinhua/Zheng Huansong)

Photo taken on Aug. 14, 2015 shows a temporary shelter set up after the warehouse explosion in Tianjin, north China. Drinking water, food, clothes and quilts are adequate at the shelter. (Xinhua/Zheng Huansong)