直到双眼再无法睁开那天直到睡觉再也醒不了那天
[zhí dào shuāng yăn zài wú fă zhēng kāi nèi tiān zhí dào shuì jué zài yĕ xĭng bù le nèi tiān]
Translating literally, it means 'Until the day my eyes can no longer open and the day I sleep but never wake again'. This signifies a strong emotional commitment to something (often used in romance) till the last moment of one’s life.