时间以北慕城南北城以南歌依旧
[shí jiān yĭ bĕi mù chéng nán bĕi chéng yĭ nán gē yī jiù]
This username combines poetic imagery with a romantic sentiment. 'Time north of the city wall and south of the southern city' suggests distant memory or lost moments in time. 'Songs remain' signifies that memories or feelings remain even when time and circumstances have changed.