陪你永世不老千年眷顾一笑
[péi nĭ yŏng shì bù lăo qiān nián juàn gù yī xiào]
'Accompanying You to Ageless Smile Across Millennia’ conveys affection over a long span, emphasizing undying love that lasts through time. A smile is used here to express genuine happiness, highlighting the joy derived from staying by someone's side forever.