How to explain the song about measuring interest in Jade Sagger?

Greedy has five sons, Jusaburo (Greedy Wolf has five sons, and Jumentu has three sons).

Venus has four strong sons (Jin has four sons)

Five ghosts, two sons of Lian Zhen (Lian Zhen Fire has two sons)

Fu Bi is only half a boy (there is a daughter on the left).

The only son of Mercury in Wen Qu (Wenqu Shuixing has a son)

Pojun will never be defeated and widowed (Pojun Golden Orphan and Widow)

Lu Cun is tall and difficult to prosper (Lu Cun has no children or daughters)

The positions of the nine planets are as detailed as this (which means that they must be calculated carefully)