In her hand was a green bean-sized crystal with an irregular shape, containing a certain type of energy that made her feel an urge to absorb it and convert it into her own strength.
This strange sensation, combined with the education from the online courses these past few days, helped Ye Nai recognize that this was a Heart Core, something found only in Otherworldly Creatures.
The size of the Heart Core determined the creature's strength, but like the Awakeners, it was a matter of chance; not every creature had one.
If every creature had one, they wouldn't be possible to kill with ordinary firearms; it would require heavy weaponry or for an Awakener to risk their life in battle.
After playing with it for a while, Ye Nai threw it back into the Fungal Space, allowing the fungus to absorb it. The energy it fed back was minimal, and at this moment, amidst the large amount of energy being fed back, the contribution from that Heart Core was hardly noticeable.