The fourth layer of the underground space was completely different from the three layers above, as it was a tiny dimensional space, a Secret Realm.
The entire Secret Realm consisted of just a single Castle of the Undead, but here the aura of death was so dense that it was visible to the naked eye.
"Copperbeard, what kinds of buildings are there inside this Castle of the Undead?"
They had broken through the Death Barrier of the Undead Temple and appeared right in the center of the Castle of the Undead, able to see pretty much all of the castle's buildings and facilities at a glance.
There weren't many buildings, big or small, but each one had its unique features, which made Zi Liyuan green with envy.
