Torrential rains have battered Henan province since the early of  last week, displacing hundreds of thousands of people and causing 1.22 billion yuan (about $190 million) of economic damage,

Home to 99 million residents, Henan is one of China’s most populous provinces, with large swathes of farmlands and factories.

Zhengzhou, the provincial capital of 12 million people, is one of the worst-hit areas.