The Black and White Ghosts were Xie Bi 'an and Fan Wujiu.
The origin of the Black and White Impermanence's name was because the Black Impermanence's original name was Fan Wujiu, and the White Impermanence's original name was Xie Bian. The two of them had been good friends since they were young and were like brothers. According to the legend, one day, they went out to do something together, but they encountered heavy rain and floods under the bridge. When White Impermanence went back to get the umbrella, Black Impermanence chose to wait under the bridge. However, the flood was getting bigger and bigger, and Black Impermanence was eventually washed away. When the White Impermanence returned, he couldn't find the Black Impermanence and was very sad. In order to express his gratitude, the King of Hell gave them the name Black and White Ghosts. Therefore, the Black and White Ghosts 'names came from their original names and this story.
The Black and White Impermanences were nicknamed the Soul Guide.
The Black and White Ghosts were called siblings on the surface in Painting of the Bad People of Jianghu, but they were not actually related by blood. They were two orphans adopted by General Chang Jin under Zhu Wen and later became the Black and White Impermanences under the Underworld Emperor. Therefore, according to the information provided, the Black and White Ghosts were not siblings.
There were many versions of the story of the Black and White Ghosts, but the most common story was that they were originally a pair of good brothers, named Fan Wujiu and Xie Bian. They lived in an ordinary village and were like brothers since they were young. One day, they went out to do some work and walked under a bridge. The sky was gray and it was about to rain heavily. White Impermanence wanted to go back and get the umbrella, so he asked Black Impermanence to wait under the bridge. After White Impermanence left, it began to rain heavily and the river began to rise. Black Impermanence didn't choose to leave. Instead, he continued to wait. When White Impermanence returned, he couldn't find Black Impermanence. White Impermanence watched his good brother being washed away by the flood and chose to hang himself on the bridge pillar. After the two of them died, they went to the King of Hell. In this story, the Black and White Ghosts were given this name by the King of Hell because of their loyalty and faith, and they became the great gods of the Underworld.
Seeing the Black and White Impermanence was a legendary phenomenon. According to different theories, it might have different meanings and omens. Seeing the Black and White Ghosts in a dream could mean that they might encounter difficulties or troubles recently, or even life-threatening. For married women and working women, this may mean that they face some restrictions or pressure in work or interpersonal relationships. For unmarried women, dreaming of the Black and White Ghosts pursuing them might mean that their family would interfere with their emotional life and might be arranged for a blind date. However, these explanations were based on superstition and folklore, and there was no scientific basis to prove their accuracy. Therefore, there was no clear conclusion as to the true meaning of seeing the Black and White Ghosts.
The Black and White Ghosts were not blood brothers. They were sworn brothers, and their names were Xie Bi 'an and Fan Wujiu. They grew up together and shared many memories and activities. According to folk legends, they were given the name Black and White Ghosts because of their loyalty and faith, and they became the great gods of the underworld. Therefore, although they had a deep brotherhood, they were not related by blood.
The Black and White Impermanences were distributed in many places in the Onmyoji game, including the Boss in Chapter 16, the Three Pure Princess in Chapter 24, the fourth floor of the Soul Control Dungeon, the sixth floor of the Riverside Nurseries, the seventh floor of the Demon Sword Secret Manual, the sixth floor of the Umbrella Sword Protection, the ninth floor of the Green Lamp Hundred Monogatari, the first floor of the Summer Wind Poetry, the ninth floor of the Rain Maiden's Waiting, the sixth floor of the Storm Summit, and the ninth and tenth floors of the Blood Moon. Among them, players were recommended to farm at the Storm Summit or the Blood Moon. There were two White Impermanences in these places, so the efficiency would be higher.