DICT.TW Dictionary Taiwan

 替古人耽憂 [ㄊㄧˋ ㄍㄨˇ ㄖㄣˊ ㄉㄢ ㄧㄡ; ti4 gu3 ren2 dan1 you1]
 to fret over the worries of long-departed people (idiom); to worry unnecessarily
 crying over spilt milk
 often used with negatives, e.g. no need to worry about past issues
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