Located in the west of Nine Heavens Big Domain, Demon Realm was the largest domain across Motian Realm and the nest of demons in Motian Realm.

Like Emperor NvWa City which could hardly be violated by demons, there was also a region in Demon Realm which could become the last shelter of demons.

This region was called Demon Deity's Abyss. 

All the human powers would change their faces when they heard Demon Deity's Abyss. In the history of tens of thousands of years in Motian Realm, many unrivaled talented human powers had raided Demon Deity's Abyss. Without exception, none of them could survive back. One of the most important reasons was that humans could only use 1/3 of their total battle force in the Demon Deity's Abyss due to the restriction and invasion of the force in the abyss.

If a human immortal emperor entered the Demon Deity's Abyss that gathered most of the demon powers with 1/3 of his total battle force, of course, he would die.

There were numerous demon cities in Demon R