C5372 Powerful Oppression

There was also a boundary between the Heaven Realm and Nether Realm, called Profound Yin Mountain.

It was a desolate land that was inhabited by few people. It was often used by the imperial court to send prisoners.

Unlike the Two Realm Mountains, the human race did not choose to set up defenses here. The 18 realms of the Nether Realm and the Heaven Realm had always been connected