相依偎到海枯石烂牵起手到天荒地老
[xiāng yī wēi dào hăi kū shí làn qiān qĭ shŏu dào tiān huāng dì lăo]
It means staying together until the seas run dry and the rocks crumble, holding hands until the heavens collapse and time reaches its end. It implies the eternal love between two individuals, emphasizing the idea of forever and loyalty.