HSK 7-9
活该
huógāi动
(coll.) serve sb right; deservedly; ought; should
他无视警告被罚也活该。
Tā wú shì jǐng gào bèi fá yě huó gāi.
He ignored the warning, so he deserved the punishment.
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Appears across levels (7-9) in the HSK 3.0 word list.