A man walks over a bridge as smoke rises from chimneys of a thermal power plant in Shanghai February 23, 2015. REUTERS/Carlos Barria

A man walks over a bridge as smoke rises from chimneys of a thermal power plant in Shanghai February 23, 2015. REUTERS/Carlos Barria

A man walks over a bridge as smoke rises from chimneys of a thermal power plant in Shanghai February 23, 2015. REUTERS/Carlos Barria

July 12, 2016 11:05 AM (UTC+8)