[替古人担忧 / 替古人擔憂, tì gǔ rén dān yōuㄊㄧˋ ㄍㄨˇ ㄖㄣˊ ㄉㄢ ㄧㄡ] to fret over the worries of long-departed people (成语 saw); to worry unnecessarily; crying over spilt milk; often used with negatives, e.g. no need to worry about past issues#265439
[前无古人后无来者 / 前無古人後無來者, qián wú gǔ rén hòu wú lái zhěㄑㄧㄢˊ ㄨˊ ㄍㄨˇ ㄖㄣˊ ㄏㄡˋ ㄨˊ ㄌㄞˊ ㄓㄜˇ] to surpass all others of its kind before and since; to have neither predecessors nor successors
[替古人耽忧 / 替古人耽憂, tì gǔ rén dān yōuㄊㄧˋ ㄍㄨˇ ㄖㄣˊ ㄉㄢ ㄧㄡ] to fret over the worries of long-departed people (成语 saw); to worry unnecessarily; crying over spilt milk; often used with negatives, e.g. no need to worry about past issues