"Did you hear that? That little vilefiend just said he's wiped out all life on this island several times," Azurefiend said.
"Unsurprising," Ji Ning replied. "This hidden dimension is within the Sithelands, which means that vilefiends can arise here! Although they are fairly weak without the power of a Daoguard Tower behind them, they are still enough to be absolute catastrophes for islands like this. In addition, vilefiends have essence springs located in other places. I can kill them with my sword and then locate and destroy their essence springs via karma, but the living beings on this island can only use all their strength to fight and kill the vilefiend time and time again without being able to truly exterminate it. Given enough time, the vilefiend will rise to power once more and then cause yet another calamity to descend upon this island."