只想伴着你到老只想陪着你一生
[zhĭ xiăng bàn zhe nĭ dào lăo zhĭ xiăng péi zhe nĭ yī shēng]
Literally means 'Just want to accompany you till I grow old, just want to stay with you my whole life'. It's an expression for eternal love and companionship, reflecting a wish for longevity together with a loved one.