By the time Zheng Shuguo arrived at the Jiankou section of the Great Wall of Cathay, the entire place had already been surrounded by over 1,000 investigators.

Zheng Shuguo was wearing general epaulets on his shoulders, and all of the investigators that caught sight of him immediately bowed respectfully in greeting. Director Lei of the Special Investigations Department was in a semi-retirement mode, and as a result, the Prefect-level Zheng Shuguo had taken over as the director of the Special Investigations Department. Even though this department was already far from its heyday, the threat of a general was still enough to earn everyone's respect.

Zheng Shuguo nodded to acknowledge the investigators, then strode down directly from the beacon tower. The Jiankou section of the Great Wall was one of its most precarious stretches. The terrain here fluctuated drastically, and it was situated at over 1,000 meters above sea level. In fact, the terrain was so steep that this section of the Great Wall formed a "W" shape.

However, Zheng Shuguo wasn't in the mood to be looking at this right now. His gaze had already settled on the sky, where tens of thousands of evil ghosts were revolving in the air involuntarily up above, screaming in horror as they formed a massive black ball. On the monitors,...