夜深人静只剩爱情
[yè shēn rén jìng zhĭ shèng ài qíng]
In the dead of night when everything quietens down, only love still lingers. It speaks to enduring romanticism despite the solitude, and could also imply that in those private moments between midnight lovers, love stands as a testament of its resilience even if there're external noise around during daytime.