Yue Xia Lao Ren is also called The Old Man Under The Moon. As god of marriage, he decides who marries whom, although only decides marriages between males and females.
He originally was a young man of the Tang Dynasty, his name Wei Gu and to his misfortune he had lost his parents at a young age. He was a nobleman but was bankrupt, so he attempted to better his situation by trying to marry the daughter of an official. This endeavour was however unsuccessful.
It was one year that Yue Xia Lao Ren travelled to a city where it was suggested by a friend to be introduced to the daughter of a deputy major. Anxious, he woke up far before daybreak, so he left for the temple. When arriving at a temple he saw no one but a single man reading a book, looking at the book Yue Xia Lao Ren saw strange characters. Asking the man on this book, the man explained how this book contains all the marriages of the world, current and to be. This man told Yue Xia Lao Ren that he will marry in fourteen years.
The girl Yue Xia Lao Ren was to marry was mentioned and the mysterious man disappeared, leaving Yue Xia Lao Ren in a rage. He found the girl he was to marry and stabbed her, fleeing the scene and joining an army under a false name. He eventually got to marry the daughter of a provincial governor who turned out to be the girl he stabbed so many years ago.