However, all things in the universe are nurtured by Spiritual Energy. Even if the entire world becomes polluted, the energy contained in minerals like this is not easily altered, so the metal ore transported here is filled with Spiritual Energy instead of Demonic Energy.
This is one of the reasons why perfectly good refining materials are thrown over here as defense — they contain Spiritual Energy inside and can't be refined by Demon Cultivators, making them useless for them.
The mention of the Demon Realm invasion made everyone's expressions a little heavy.
Even though the Netherworld isn't directly affected, if the Demon Realm successfully invades and occupies a small world, the original living beings of that world will gradually perish. As Fengdu, a place for housing souls and spirituality, it's a massive workload trying to handle the large influx of death energy, making it very challenging.
