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?
yóu shé
water snake
colubrid
racer
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