Photo taken on Sept. 10, 2014 shows the interior of a pollutive coke furnace which is to be dismantled at Anshan Iron & Steel Group in Anshan, northeast China's Liaoning Province, Sept. 10, 2014. Anshan Iron & Steel Group, China's second-largest steel maker, tore down six fuel-inefficient coke furnaces on Wednesday in response to the "blue sky project", an emission-reduction campaign in Liaoning Province aimed at improving air quality. (Xinhua/Yang Qing)