BOOOOOOOOOM!
A battle of Immortals really reached a stage that couldn't be imagined. When Atlas was technically only two realms away from that benchmark, it was hard to imagine that there would be a massive difference in power, but that was a naive train of thought.
The concept of Heavenly Tribulation was something that would appear after the Law Sea Realm. To form the Realm Heart and solidify the World Core, one had to prove to the Heavens multiple times that one was worthy.
However, the tribulation that stood between the World Core Realm and the very first stage of Immortal Cultivation was an unbelievable thing that killed a sweeping majority of those who attempted it.
