回忆着回忆不起的回忆悲伤着悲伤不起的悲伤
[huí yì zhe huí yì bù qĭ de huí yì bēi shāng zhe bēi shāng bù qĭ de bēi shāng]
Echoing sentiments related to nostalgia tinged with melancholy, where memories fade away leaving only a vague echo, along with sadness which becomes too overwhelming even though it is hard fully expressed. Suggestive themes revolve around loss, regret or unexpressed grief and bittersweet remembrance.