恨不得一夜之间白了头多想和你一起慢慢变老
[hèn bù dé yī yè zhī jiān bái le tóu duō xiăng hé nĭ yī qĭ màn màn biàn lăo]
Meaning 'Wishing my hair could turn white overnight, how much I wish to grow old with you gradually'. This reflects longing and commitment, expressing the deep desire to age together with a loved one despite hardships.