For the Rock Armor Behemoth, which was already considered a quasi-Fifth Order Demon Beast, these Demon Cores had no effect on increasing cultivation level; they were merely used to restore mana.
In this aspect, Demon Cores were indeed the best items for Demon Beasts to restore mana.
Zhou Chun also noted this down. If his own Spirit Pet were to face a tribulation, and there were no better Spirit Pills available, he could prepare some Demon Cores of the same attribute as supplements.
Although this might seem like a waste of resources, compared to the benefits of surviving the Heavenly Thunder Tribulation, it was nothing.
However, even with these Elixirs and Demon Cores for supplementation, it was impossible to fully restore the Rock Armor Behemoth's injuries and mana in a short period.
When it finally managed to stop its wounds from bleeding, the third round of Tribulation Thunder descended!
