如释重负 (rú shì zhòng fù)

as if relieved from a burden (idiom); to have a weight off one's mind

Character breakdown

Usage

考试结束后,他如释重负地松了一口气。

After the exam finished, he breathed a sigh of relief.

Kǎo shì jié shù hòu, tā rú shì zhòng fù de sōng le yī kǒu qì.