Heavy smog continues to choke Chinese cities
    

    


    chinadaily.com.cn    |     2017-01-04 07:55
    



 


    


    

    


    



    

    

    


    


    
Heavy smog continues to choke Chinese cities

    


    


    Professor Liu Yong from Beijing University of Chemical Technology shows the smog particles on used masks through an electron microscope on Jan 3, 2017. [Photo/Chinanews.com]
    
    		

    
    

    

    


    

    

    



    

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