Worthy of being a special treasure chest exclusive to the dungeon.
The items inside were indeed quite good.
Demon Abyss Prison had once been part of the abyss, and the rewards now were all abyss-type treasure chests.
Although Endless Continent had no large passage directly connected to the abyss, there were quite a few strange and perilous places that also possessed abyssal characteristics.
For the time being, most lords had no chance to come into contact with these strange and dangerous places.
Even Zong Shen was no exception.
The nearest abyssal danger zone to his territory was several million kilometers away.
There was a rift over ten thousand meters deep there. Everything within it, along with the surrounding dungeons, had been completely tainted by abyssal power, becoming terrifying and evil.
Besides the savage abyssal monsters active within, many dungeon creatures had also been warped by abyssal power.
It held secrets and remnants from ancient eras.
However, since it was so far away, Zong Shen had no need to make a special trip to develop that abyssal rift.
Therefore, before this, abyssal power was rarely seen in daily life.
Other than in specific environments, most abyssal energy would slowly dissipate after entering the main material plane.
The two naturally had a mutually restraining relationship.
However, that did not hinder the power of the abyssal lineage.
This was true of monsters, troops, and treasure chests alike.
This reward could be considered exceptionally rare.
Yet obtaining a [Demon Abyss Prison Special Treasure Chest] was by no means easy.
The dungeon rules had long stated that only those with an evaluation above Level 6 had a chance of receiving a treasure chest.
Based on Zong Shen's estimation, Level 6 should be the threshold for clearing it.
Anything above Level 6 meant a guaranteed clear.