From the perspective of everyone, Zhao Hai had just obtained Pluto star area not too long ago. The cultivators of Pluto star area were still not convinced. They could use this opportunity to attack the underworld. As long as they succeeded, they could regain control of Pluto star area.
The Wyvern used to be the home of a faction that was supported by other planes. When Zhao Hai was fighting with the other factions in Hades, the Wyvern was the base of the Allied forces. However, the teleportation array was sealed by the undead creatures sent by Zhao Hai, and the Alliance was conquered. This was one of the main reasons for the failure of the other planes.
