They are ghosts in folk myths and legends, specializing in catching ghosts, and people also call them black and white impermanence. In folklore, Bai Biao is tall, thin, pale, with a scarlet tongue in his mouth and a tall hat with the words "making money at first sight" written on it.
It means good luck to a god-fearing ghost. Black impermanence is short and strong, black and fierce, and he wears a tall hat that says "All is well", which means that after all evil spirits are caught, all is well.
Black and white impermanence legend:
Black and white impermanence legend says that they had an excellent relationship before their death and became brother and sister. Once they came to Fuzhou, Fujian together, and suddenly it was cloudy. The seventh master asked the eighth master to wait for him to go home and get his umbrella. As a result, it suddenly rained and the river surged, but Grandpa Eight didn't want to stand up. He was swept away by the flood and finally drowned.
When the seventh master came back, he found that the eighth master was gone. The grieving Seventh Master finally hanged himself on the bridge. Because he was hanged, Bai impermanent Seventh Master stuck out his tongue. Black and white impermanence occupies a high position in the underworld. White impermanence is also called seven lords, black impermanence is also called eight lords, and black and white impermanence is also one of the top ten handsome men in GREAT GHOST.