zǎo zhī jīn rì hè bì dāng chū
if I (you, she, he...) had known it would come to this, I (you, she, he...) would not have acted thus (idiom)
to regret vainly one's past behaviour
suàn nǎ gēn cōng
who do (you) think (you) are?
who does (he, she etc) think (he, she) is?
shè yǒu
to have
to incorporate
to feature
zǎo zhī jīn rì hé bì dāng chū
if I (you, she, he...) had known it would come to this, I (you, she, he...) would not have acted thus (idiom)
to regret vainly one's past behavior