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          Ten photos from across China: March 10 - 16
          
        
          
      
          
      
          
        
          
          chinadaily.com.cn |
          Updated: 2023-03-17 06:40
          
          
          
          
        


        
      
          
      
          
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   Students hold pies as they learn about the mathematical constant pi at a primary school in Hangzhou, Zhejiang province on March 13. The event was held to mark International Day of Mathematics, also known as Pi Day, which fell on March 14. Pi is the ratio of a circle's circumference to its diameter, which is approximately 3.14159. XU JUNYONG/FOR CHINA DAILY 
 
           

           

          
        
          

        
        
      
          
        
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