成事不说 (成事不說) chéngshì bù shuō
          
              chéngshì bù shuō 
              
              set phrase 
              it is not useful to discuss things of the past 
              Domain: Idiom 成语
              
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                Notes: (Guoyu '成事不說'; Mathews 1931 '成事不說', p. 48)