The power cultivated by the pitch-black fog's ultimate goal is to condense Huangquan Power. However, as it practiced, it became less confident. It doesn't know whether the path it has chosen is fundamentally wrong.
If a Ghost Zone is blessed with Huangquan Power, there is hope that it will slowly transform into an "Underworld". Of course, it won't be able to compare to the legendary Netherworld. However, the four of them won't have to worry about being visited by Netherworld's envoys one day and being sent to the Eighteen Levels of Hell to suffer from various tortures.
By then, our little Underworld would be on equal footing with the Netherworld in terms of political power!
It's like the Wood Dynasty and its relationship with the surrounding small countries.
In a Ghost Zone, four powerful entities like them have gathered precisely because they share a common goal.
This goal was originally out of reach, but now, the Honored Lord has brought hope to their doorstep!
