换空气

Traditional (Taiwan): 換空氣

huànkōngqì ㄏㄨㄢˋ ㄎㄨㄥ ㄑㄧˋ

    • to change one's surroundings for a fresh start

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
change the air
Meaning
To change the surroundings or atmosphere, e.g. by going somewhere new for a fresh start. Neutral, figurative.

Sources