替古人耽憂 [－－－－忧]

Jyutping tai3 gu2 jan4 daam1 jau1
Pinyin tì gǔ rén dān yōu

Definitions (CC-CEDICT)
  1. to fret over the worries of long-departed people (idiom); to worry unnecessarily
  2. crying over spilt milk
  3. often used with negatives, e.g. no need to worry about past issues