Meaning of huó gāi:
活该
(coll.) serve sb right
tā kǎoshì méi tōngguò, huógāi.
他考试没通过,活该。
He failed the exam, serves him right.
deservedly; ought
Tā bèi piàn le, zhēn shì huó gāi!
他被骗了,真是活该!
He was deceived, and he totally deserved it!
Tā chídào le liǎng cì, tā bèi jiěgù, zhè shì tā huógāi.
他迟到了两次,他被解雇,这是他活该。
He was late twice and got fired, he ought to have been.
should
Tā bù tǐliàng biérén, suǒyǐ tā shòudào le chéngfá, yě zhǐ néng shuō huógāi.
他不体谅别人,所以他受到了惩罚,也只能说活该。
He didn't consider others, so when he got punished, it can only be said that he deserved it.