我愿溺死深海换你永世长安我愿坠落深崖换你永生不灭
[wŏ yuàn nì sĭ shēn hăi huàn nĭ yŏng shì zhăng ān wŏ yuàn zhuì luò shēn yá huàn nĭ yŏng shēng bù miè]
A poetic and somewhat extreme expression meaning: 'I would drown in the deep sea so you could live long and prosper; I’d fall into a deep cliff to guarantee your immortality.' It conveys an intense desire for self-sacrifice for someone’s sake.