早知今日何必当初

早知今日，何必当初:

Literally means:

if one had known then what was going to happen, he would not have acted as he did; what one sow, one reap

Actually means:

This phrase means if one had known what would happen now, he should not have done what he did.

It connotes that one feels regretful for what has been done. It can be used to express one's lament over what he did, or to blame someone else for what he did. Derogatory.

如果早知道今天的结果，当初就不应该做那样的事。含有后悔已经晚了的意思。

可用来表示对自己过去的行为感到后悔，也用来责备别人过去所做的事情。具有贬义色彩。