下课铃声才是中国最强音
[xià kè líng shēng cái shì zhōng guó zuì qiáng yīn]
This nickname, 'Xiàkè léng shēng cái shì Zhōngguó zuì qiáng yīn,' literally means 'It is the school dismissal bell that rings out loudest in China'. It playfully implies that the ringing sound marking the end of class or a lecture stands above other noises and announcements due either to its frequency volume or impact suggesting how students anxiously await after lessons end.