As Xu Ping'an pondered, the crack on the altar widened once more.
The chilly aura inside the cave became even thicker, making even a cultivator like Xu Ping'an shiver uncontrollably.
"We're in big trouble. This evil entity is certainly not weak, probably at least Eighth Rank, or even Ninth Rank. But it must have been sealed here for many years, likely among the first batch of evil entities to be sealed, so its strength would have diminished a lot," Li Xuanqing said.
Xu Ping'an nodded in agreement.
Evil entities can't be destroyed because their physical bodies are not solid, they're more like energy bodies.
Such energy bodies are very difficult to eradicate.
There are said to be some methods to kill an evil entity, but Xu Ping'an didn't know them.
So oftentimes, these evil entities are sealed away, cut off from absorbing dark energy, thus weakening their powers.
Now that this evil entity has been sealed for so long, its strength must have already been greatly reduced.