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          2021 Big Data Expo kicks off in Guiyang
          
      
          
      
          
        
          By Yang Min | 
          chinadaily.com.cn |
          Updated: 2021-05-26 13:16
        
        
          
          
          
          
        

      
          


      
          
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   Turing Award winner John L Hennessy shares his opinions on digital technologies in an online speech at the opening ceremony of the 2021 China International Big Data Industry Expo. [Photo/chinadaily.com.cn] 
 
           

          
        
      
          
      
      
      
          
        
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