下课铃好动听上课铃好难听
[xià kè líng hăo dòng tīng shàng kè líng hăo nán tīng]
The dismissal bell sounds melodious while the starting school bell is unpleasant to hear: Conveys a student’s love-hate relationship with school, highlighting the joy of finishing classes and disliking the start of new ones, showing a preference for free personal time over the rigid timetable of school life.