C2723 A Trick?

It's a long tunnel, and I don't know who built it, but it makes me feel bad.

The surroundings were paved with limestone, and the five-colored light came from the depths of the tunnel.

Chen Shaofeng didn't know what was in the depths of the tunnel that could emit such a dazzling light, but he knew that it must be something extraordinary.

He walked towards the depths of the cave step by step