"What material is this bluestone? It holds such high temperature, yet shows nothing of it on the surface?"
Yu Ci struck it with the Pure Yang Talisman Sword; no matter how he looked at it, this thing did not look like it could store heat. He circled the bluestone a few times, a thought stirring in his mind. The talisman sword abruptly stabbed into the intersection between the ground and the bluestone, where there was an extremely tiny gap.
The moment he executed the sword strike, Yu Ci's essence, energy, and spirit naturally poured into the sword body, as if the sensation of his hand and eye extended outward, granting him absolute mastery over the conditions where the sword tip made contact. He gave a soft shout, his internal force covertly circulating with exquisite precision. The half-person-tall, hundreds-of-jin bluestone flew up entirely, revealing a pitch-black opening beneath it whose depth was unknown. Turns out this stone was not integrated with the rock strata below; someone must have moved it over.
Were there signs of human activity here?
Prying away the bluestone, a slightly warm current of air rushed out, dispersing the surrounding thin mist. Standing nearby, Yu Ci felt that the temperature was not particularly high either.
The bluestone landed with a thud, emitting a loud sound. Just as Yu Ci craned his neck to peer into the hole, his heart gave a sudden, violent jolt—not because of the bluestone, but due to a different sound that rang out simultaneously.
He spun around like a whirlwind, his gaze piercing the mist of the concave pit. A massive shadow had just slipped off the opposite cliff face, moving over slowly.
At this time, the Sky Rift Valley had already entered night, and the light in the concave pit was dim. Yet