What is the life of Yuanyang Butterfly?

In numerology, there is a saying that the two sides of the so-called mandarin ducks and butterflies can meet on their birthdays, and heaven and earth meet, and the earth dominates the earth, also called heaven and earth meet. Couples with this eight-character combination will meet in ocean deep. Once they get to know each other, they are inseparable, but it happens once in a hundred years.