司空見慣

Simplified: 司空见惯

On the HSK 7-9 vocabulary list, at CEFR level C1.

sīkōngjiànguàn ㄙ ㄎㄨㄥ ㄐㄧㄢˋ ㄍㄨㄢˋ

    • a common occurrence (idiom)

Character by character

Sources