下课铃才中国最强音
[xià kè líng cái zhōng guó zuì qiáng yīn]
'Class Bell Is the Strongest Sound of China'. It humorously refers to the idea that, for students, the class dismissal bell is a sound they are most excited to hear. The term 'China’s Strongest Sound' normally conveys the most impactful or widely known sounds within China but here it's exaggerated and used in a light-hearted way to emphasize students' eagerness to leave classes.