北城以北深海未眠乀
[bĕi chéng yĭ bĕi shēn hăi wèi mián fú]
Beyond the Northern City, in the deep sea, sleep does not occur (represented by a decorative symbol 乀). This could signify continuous activity in the depth beyond urban reach. The meaning is mysterious and poetic, suggesting relentless pursuit or unquiet spirit residing in the depths.