Forging an Advanced Combat Arena

An endless ocean of purple airflow poured through a spatial vortex connected to an unknown land, flowing above the World Tree and surging into its body. The World Tree's trunk, crown, roots, leaves, and everything else expanded explosively at the same time.

"Rumble—"

The World Tree, crazily swallowing the purple airflow, had grown to thirty thousand light-years tall in just a moment, and it was still expanding rapidly.

At the same time, every leaf of the World Tree rapidly grew larger, while the space inside the leaves expanded exponentially. New leaves also continued to sprout from the branches.

Gradually, the entire World Tree turned purple.

The trunk of the World Tree had now reached a height of one hundred thousand light-years, while the crown had reached a diameter of five million light-years.

It could be said to be an existence comparable to a Small Universe.

Suddenly, the endless ocean of purple airflow vanished, and the spatial vortex connected to the unknown land disappeared as well.

"Did it work?" Xiao Yu asked.

He had been watching the World Tree's advancement the entire time and had gained some benefits from it. That purple energy was exceptionally advanced. Even he could not absorb it, but while observing it, he had comprehended a trace of that mysterious, unfathomable force.

"Boom!"

The World Tree suddenly shrank, becoming the same height as Xiao Yu's Divine-Power Incarnation—a miniature World Tree.

"Master, yes. I successfully advanced just now, and I also opened a passage inside my body. From now on, I can constantly receive that purple airflow, so I no longer need to work hard to swallow Chaos airflow in the Universe Sea to accumulate energy," the World Tree said.

"What is that purple airflow?" Xiao Yu asked curiously.

"Master, it is energy of a higher level than