一生一世一双人三世情缘尘归土
[yī shēng yī shì yī shuāng rén sān shì qíng yuán chén guī tŭ]
Inspired by ancient Chinese literature on eternal love, this expresses wishes for long-lasting companionship throughout life ('One husband, one wife') and hopes for the lovers' destinies ('Three lifetimes of romance') to culminate in unity even in death.