Gu Yi sensed the Battle Spirit Imprint he had left on the Sword of Pure White and immediately learned its current location.
It was not far from Gu Yi, only several dozen miles away.
Outside, Gu Yi could have arrived in the blink of an eye.
But in this thunder domain filled with terrifying lightning, his speed had to be much slower.
A few minutes later, an aerial island appeared before Gu Yi, almost identical to the island where the Primordial Magnetic Divine Tree had grown.
The only difference was that it floated within the Ninety-Mile Thunder Domain rather than the Hundred-Mile Thunder Domain.
A layer of distorted force field enveloped the island like an eggshell, protecting the entire island. Beneath it stood a small mountain a hundred zhang tall.
The Battle Spirit Imprint Gu Yi had left behind was located inside a cave halfway up that mountain.
Gu Yi pondered briefly, then broke through the force field with a single thrust of his spear and flew into the cave.
As he neared the cave, Gu Yi sensed a fairly powerful aura, far stronger than that of the Dwarf Demon Race elder.
Gu Yi's expression remained unchanged. Completely unconcerned about any danger within, he stepped directly inside.
The cave carried the scent of ages. It had clearly existed in this thunder domain for countless years, yet the terrifying lightning around it had failed to destroy it.
Its material was evidently compatible with Thunder Origin Qi. It had been constructed by an expert who cultivated the Law of Thunder, modeled after the islands of the Hundred-Mile Thunder Domain.
And that expert was the master of the Sword of Pure White!
Not long after entering the cave, Gu Yi saw a stone stele. Divine Realm Script was carved upon it, each stroke