久居我心便是妃久居我心便是王
[jiŭ jū wŏ xīn biàn shì fēi jiŭ jū wŏ xīn biàn shì wáng]
'If you reside long enough in my heart, you can be a queen (or king) in my heart.' It implies that someone who stays deeply and lastingly within another's feelings or affections will gain paramount importance, similar to royalty in this person's emotional life, reflecting deep affection and commitment.