The formation core of the Extinction Tree Formation was placed roughly a hundred zhang underground.
This location ensured the Extinction Tree Formation's secrecy and safety, and was also why it was so difficult to discover. Even City Lord Qiao had failed to detect its existence. Only Yang Chen had noticed it in advance because of the Sacred Overlord Ant. Otherwise, even he might have fallen into Fu Yunhe's trap.
A depth of a hundred zhang underground was difficult for ordinary people to reach,
but it was different for Yang Chen, who was in the Earth Martial Realm.
He directly dug down a hundred zhang and arrived at the formation core of the Extinction Tree Formation.
This formation core resembled the roots of a tree, except its root system was immensely huge, as large as an entire house. Thick and thin roots and branches spread across it. According to Yun Lu and the other Fishman Elders, this was where the Extinction Tree Formation's power lay.
Of course, Yang Chen was not curious about the Extinction Tree Formation itself, but about its true core of power—the ten-thousand-year ancient tree essence!
"Young Master, the ten-thousand-year ancient tree essence is here!" Yun Lu reminded him.
As Yun Lu spoke, Yang Chen saw where the ten-thousand-year ancient tree essence was. It was inside the formation core of the Extinction Tree Formation, completely wrapped within it. Unless one deliberately observed it, it was difficult to notice.
The formation core was not transparent. Only the radiance spilling from the ten-thousand-year ancient tree essence proved that it was inside.
"Now that the Extinction Tree Formation no longer has any other use, let's dismantle it. I'm rather curious what kind of divine object this ten-thousand-year ancient tree essence truly is," Yang Chen muttered.
He had not paid much attention