Xu Changqing and Luo Qinghan exchanged a glance, then, without the slightest hesitation, accelerated toward the source of the fluctuations.
Yet the source of the fluctuations was farther away than they had imagined.
They traveled for nearly an hour without reaching it.
Instead, the surroundings began to change.
The roots beneath their feet grew thicker and thicker.
At first, those roots had been no thicker than fingers.
But as they ventured deeper, they gradually became as thick as arms, thighs, and even massive roots that several people joining hands might not have been able to encircle.
These colossal roots extended from the walls, then coiled together across the ground into enormous arching structures, like wooden bridges rising one after another.
Yet what flowed beneath the bridges was no longer dark green liquid, but broad rivers of liquid spiritual energy wide enough for boats to sail upon.
Then, Xu Changqing and Luo Qinghan saw a tree at the same time.
It grew at the end of the space.
Or rather, it was the end of the space itself.
The trunk's diameter was so vast that it could not be measured at all.
Its roots stretched from the ground to the dome, from the left side to the right, and the trunk alone occupied every inch of their field of vision.
The scale of its canopy was even beyond what the naked eye could see.
Its canopy had already pierced through the dome, or perhaps it was part of the dome itself.
"Is that... the World Tree?!"
Xu Changqing stopped in his tracks and looked up at the enormous tree that blotted out the sky and covered the earth.
In an instant, Mu Ning of the Azurewood Sect in the Heavenly Origin Realm came to mind.
Mu Ning was the tree spirit