陪她校服到婚纱陪他睡衣到寿衣
[péi tā xiào fú dào hūn shā péi tā shuì yī dào shòu yī]
This signifies accompanying someone from adolescence through marriage while staying by the other's side from restful times through final moments. A very romantic and deep commitment spanning different stages of life, emphasizing fidelity and longevity of relationships.