你可以用生命保护我我可以用生命守护你
[nĭ kĕ yĭ yòng shēng mìng băo hù wŏ wŏ kĕ yĭ yòng shēng mìng shŏu hù nĭ]
A mutual declaration of unconditional support, vowing that each would risk everything, including their lives, to protect the other. It signifies an extremely strong bond or relationship.