考试是会呼吸的痛
[kăo shì shì huì hū xī de tòng]
'Examination is a Breathing Pain' conveys how painful and stressing exams are for students in China. The metaphor means exams always make one feel pain as long as one still needs to breathe, i.e., is alive. It implies endless pain as they have no way to escape this cycle of exam-taking throughout student life.