A large pile of ash lay on the ground. It was still giving off heat when Gao Peng walked up to it.

As he rummaged through the ash pile for a while, Gao Peng's hand grazed against something solid that he quickly pulled out.

It was the Golden Palm Tree Spirit's core crystal, which was as big as a goose's egg. It was also gleaming with a bright green light.

Monster core crystals contained extremely high element concentrations. These elements usually rejected one another.

As a result, these crystals were impervious to elemental attacks. The only thing capable of breaking them was physical attacks.

The core crystal in Gao Peng's hand belonged to a plant-type Commander-tier monster. Its market value was at least a few thousand Alliance credits.

Only those who were truly strapped for cash would sell one. Ordinarily, Monster Trainers would trade these crystals for something else.

Soon after, Gao Peng found a mountain cave, which was essentially just a 17-foot-deep crack in the mountain.