良人许我一世白头伊人许你一世白头
[liáng rén xŭ wŏ yī shì bái tóu yī rén xŭ nĭ yī shì bái tóu]
A beautiful verse meaning 'a virtuous man promises me an eternity until white hair, while the beloved lady promises you a lifelong companionship'. It expresses mutual commitment between couples and yearns for eternal love.