久居他心于不离久居她心于不弃
[jiŭ jū tā xīn yú bù lí jiŭ jū tā xīn yú bù qì]
It means 'Always live in someone else’s heart without leaving, and settle forever in his or her mind without abandoning’. It represents a lasting and deeply held commitment, expressing an aspiration to stay rooted deeply in a loved one's heart.