北城以北未眠的深海南城以南不归的思念
[bĕi chéng yĭ bĕi wèi mián de shēn hăi nán chéng yĭ nán bù guī de sī niàn]
Descriptive and poetic, translating as 'to the north of North City the sleepless deep sea; to the south of South City the irrevocable thoughts'. It connotes themes of endless and unresolved longing tied with insomnia and the depth of one’s emotional turmoil.