你是我回不去的回忆
[nĭ shì wŏ huí bù qù de huí yì]
'Ni Shi Wo Hui Bu Qu De Hu Yi' means 'you are the memory I can't return to.' This conveys feelings of sorrowful nostalgia towards a lost love or precious past, expressing longing and unforgettability for that time or that someone.