The inheritance of the Ancient Demon God Yany Tu represents that Ye Zhen has truly gained control over the entire Demon Soul Realm.
Before this, Ye Zhen was unaware of any other methods, but individuals like Jii Hua and the Seventh Crown Prince of the Demon Emperor, Congyun, who contested for the Ancient Demon God inheritance, could enter the Demon Soul Realm through the secret methods of the demon clan, due to the existence of the Ancient Demon God inheritance.
But now, the inheritance of the Ancient Demon God has been obtained by the Mystical Mechanism Avatar, and the demon clan can no longer locate the Demon Soul Realm through secret methods as before.
As for other means, through the War Soul Blood Flag, Ye Zhen has seen every corner of the Demon Soul Realm clearly, and there isn't a single Teleportation Formation within, much less those cross-realm formations.
