Cao Cao's Underground Troop Passage｜Bozhou, Anhui

Step into a historical labyrinth—this is the underground troop passage secretly built by Cao Cao for military operations. Stretching for several kilometers, its winding and intricate design is truly awe-inspiring! These tunnels are said to have been constructed during the Three Kingdoms period. Ingeniously designed, they connect several key military points, enabling Cao Cao to deploy troops and march covertly. The interior of the tunnels is narrow yet sturdy, equipped with ventilation shafts, waterproofing features, and branching paths to confuse enemy forces—a true masterpiece of ancient military engineering. Today, parts of the tunnels are open to the public, allowing visitors to explore this millennia-old passage and experience the wisdom and strategy of ancient warfare. Stepping into the tunnels feels like traveling back in time, evoking a profound sense of reverence.