心路已禁止通行心路只为你通行
[xīn lù yĭ jìn zhĭ tōng xíng xīn lù zhĭ wéi nĭ tōng xíng]
'My heart's path is closed except for you' signifies exclusivity of affection towards someone. The road metaphor emphasizes devotion: all paths of the heart lead only to this special person, expressing exclusive dedication and love.