According to Elder Zhongli Jing, the Demon Soul Hall is a magical space inherited from ancient times and has another name—War Fortress!
The War Fortress was the headquarters of the Ancient Demon God's army and is an extremely powerful war machine capable of both attack and defense.
Even if enemy forces implemented a dagger operation, infiltrating the inside of the War Fortress, they would be unable to destroy the opposing command system. Inside the War Fortress, without a Passing Jade Token, one would encounter illusory realms one after another, as if in a maze.
It is said that if there was someone commanding from within, the War Fortress would be an even more terrifying war machine, capable of both offense and defense.
However, with the fall of the Ancient Demon God's race, the secret techniques to control the War Fortress were lost as well.
