繁花终有败落的一天落叶终有成碟的一天
[fán huā zhōng yŏu bài luò de yī tiān luò yè zhōng yŏu chéng dié de yī tiān]
Literally, 'Flowery blooms will eventually wither and falling leaves will someday become dust' is metaphorical for life’s ephemeral nature – everything beautiful must fade and all things have an end.