哪有什么突然想起只是一直放在心里
[nă yŏu shén me tū rán xiăng qĭ zhĭ shì yī zhí fàng zài xīn lĭ]
'Na You Shenme sudran qixiang zhi shi yizhi fabuzai xinli' means 'There's No Such Thing as Sudden Memories; They've Always Been Stored In the Heart.' This expresses that what seems like a sudden remembrance has actually been cherished all along in one's heart.