念念不忘是旧情话
[niàn niàn bù wàng shì jiù qíng huà]
'What I cannot forget is the old love words,' signifies lingering thoughts on heartfelt promises or endearments said during a prior relationship. There's a yearning or reminiscing about sweet talk or vows exchanged with an ex-partner that continue to haunt pleasantly or painfully in memory.