不覆你的深海就算留我孤城
[bù fù nĭ de shēn hăi jiù suàn liú wŏ gū chéng]
This complex sentence translates into English as 'If your deep sea doesn't submerge me, then leave me alone in my lonely city'. Here, 'deep sea' can be interpreted as another person’s deep feelings, while being left in the 'lone castle' means to be abandoned and living solo after a heartbreak.