A monumental undertaking

        

      

      

        
          
          CHINA DAILY |
          Updated: 2023-12-23 09:22
          
          
          
          
        


        
      

      

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   Displaying a 3D-printed model of one of the Great Wall's fortified towers, Li (right) talks with Zhang Yukun, director of the research team. ZHAO ZISHUO/LI RAN/SUN FANYUE/XINHUA 
 
 

 

        


        
        
      

        
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