"Growing old together" is a traditional blessing, conveying the wish that a couple will never be separated and will remain together until the very end of their lives.
As we know, Chinese people have black hair; however, as they reach old age, their hair gradually turns white. Therefore, "white hair" is generally used to refer to "the elderly."
When young people marry, their hair is black; to wish them "white hair into old age" is to hope that they will enjoy a lifetime of peace, deep affection, and unwavering togetherness—never parting until the very end of their days.
Additional well-wishes for newlyweds include: a match made in heaven, a harmonious union lasting a hundred years, soaring side by side, and hearts forever united...

English
한국어