A Mark!

Luo Cheng slept soundly. Within his daze, he seemed to feel pair of hands gently caressing his cheeks, as well as hear a soft murmuring that made him feel like he was floating in the clouds.

He didn't know how long he slept for, but he suddenly awoke. The Gorge of Lost Souls was still present, but Tian Xueyan was not.

Luo Cheng hastily looked around and called out to her, but there was no reply.

Taking a couple steps forward, Luo Cheng suddenly saw eight odd bones with special lines carved into them.

Those bones were incredibly ancient and emitted a strange pressure. They were arranged in an orderly, square pattern three meters long.

He reached out to grab one, but he had only just touched it when the bone instantly turned to ash.

"Spatial strength."

Luo Cheng sensed a spatial fluctuation when that bone dissipated, one that was similar to when a transportation formation was activated.