遇见你的时候是青春期陪伴你的时候是老年期
[yù jiàn nĭ de shí hòu shì qīng chūn qī péi bàn nĭ de shí hòu shì lăo nián qī]
'Meeting You During Adolescence But Accompanying You In Old Age' conveys a hope or promise for lasting companionship from a young age till old age, representing long-term commitment or devotion.