心脏说你旧居未走
[xīn zàng shuō nĭ jiù jū wèi zŏu]
In English, this implies that deep in one's heart (represented by 'heart'), there is still a remnant of the past ('you' may refer to someone/something from the past) that hasn't fully left. This username suggests someone holding onto nostalgia or memories of the past, unable or unwilling to move on.