The moment Yang Chen entered the secret passage, he felt the temperature suddenly change.
It was freezing!
Yang Chen had a feeling, though he did not know whether it was merely an illusion. Yet he felt it clearly: in that instant just now, he seemed to have crossed from his original world into another.
He had caught that brief spatial transition.
There was no heaven and earth spiritual energy here, only an exceptionally sinister aura of death.
"Where is this?"
Was this really just an ordinary secret passage?
Yang Chen was certain that this place was far from simple.
The instant they entered, the people from those smaller factions scattered in a frantic rush, each scrambling ahead. They feared that if they were even a step too slow, someone else would seize the Top-grade divine artifact first.
But Yang Chen was not particularly interested in the Top-grade divine artifact. No matter how good it was, one had to live long enough to obtain it first.
Even with Cloud Sky Sect's current fighting strength, they might not be able to keep the Top-grade divine artifact safe within the entire mysterious ancient city.
Compared to that illusory Top-grade divine artifact, Yang Chen was more inclined to find the components belonging to the Mountain River Destruction Map.
At that moment, he did not rush ahead, instead observing his surroundings first.
There was more than one secret passage here. The passages within his sight branched into several routes, each leading who knew where.
The terrain of the underground passages was intricate and tangled like a maze. Fortunately, he possessed the Spirit Resonance Divine Eye, allowing him to see the situation ahead with remarkable clarity.
"What is this..." Yang Chen drew a deep breath.
He had actually seen several Yin souls wandering around.
"More than