我会陪你到地老天荒我会陪你到海枯石烂
[wŏ huì péi nĭ dào dì lăo tiān huāng wŏ huì péi nĭ dào hăi kū shí làn]
It's a romantic expression promising undying support and eternal companionship to someone. The user is committed to being with a special person for eternity, beyond the limits of natural change and destruction on earth.