The environment outside the core zone of the Tianjin blast site remained normal despite the rainfall over the past two days, authorities said on Tuesday.

The site is still being cleaned up.

Fire started again at the site on a rainy Monday night, as certain chemicals that ignite when coming in contact with water-magnesium and sodium metals - got wet. Experts at the scene who were quoted by Tianjin Daily said the fire was under control and was not unexpected.