"But this is the lower realm, after the absolute severance of heaven and earth, there isn't any material exchange between the two realms!"
"The immortal bodies have lost this kind of material sustainment, originally, a million years would be enough for them to decay, but they are still slumbering within the Divine Mountain, do you know why?"
"Why?" Jiang Yuan asked.
The spirit of the tower slowly said, "Because they have extended their lives by resorting to forbidden methods, harvesting the life essences of all sentient beings!"
"That's why I call them fallen."
"This kind of forbidden method is explicitly prohibited in the upper realm, it involves some existences that cannot be mentioned!"
"Even I do not know what this taboo is, why it is regarded as taboo, and why it has spread to this world."
"Perhaps, I once knew it, but I have cut off my memories concerning such a matter."
"So, it is a taboo!"