过去是过去无需翻来覆去
[guò qù shì guò qù wú xū fān lái fù qù]
'过去是过去无需翻来覆去' roughly means 'The past is just that—the past; there's no need to dwell or obsess over it endlessly.' This expresses a straightforward attitude towards life events and emphasizes forward movement rather than repeatedly reflecting on things that cannot be changed.