可惜没有如果如果没有可惜
[kĕ xī méi yŏu rú guŏ rú guŏ méi yŏu kĕ xī]
'What a Pity That There's No If, Then There Would Be No Such a Pity.' It reflects a regretful sentiment regarding lost opportunities, failed efforts, missed possibilities and the irretrievability of the past. It can also indicate that if people had made right decisions in the first place, many misfortunes wouldn't have occurred later.