On the surface, Sanhe City was one of the main strongholds and supply stations for the Devil Race's frontline army. In secret, it was also where the main force of the Devil Race's Creation Realm experts lay hidden and gathered.
Coupled with what Ye Zhen had discovered today—that Great Prophet Jiu Xi's divine source had merged with the Primordial Demon God—Ye Zhen felt that Sanhe City was very likely the Devil Race's frontline command headquarters.
It was absolutely necessary to investigate it.
Like the main camp of Great Zhou's Eastern Expeditionary Army, if Sanhe City was the Devil Race's frontline command headquarters, its defenses would be incomparably tight.
Under a defensive network centered on Creation Realm Divine Kings, with Creation Realm Divine Generals and Creation Realm Divine Beings as its backbone, infiltrating Sanhe City was difficult to the extreme.
The Creation Realm Divine General Realm Void God Hunter from the Heavenly Patrol Division was proof enough.
Under normal circumstances, even though Ye Zhen possessed many Secret Arts related to the Devil Race and was particularly skilled at concealment techniques, it was basically impossible for him to slip through layer upon layer of blockades, infiltrate Sanhe City, and approach the core of the Devil Race command headquarters within.
However, there were some loopholes that even the Devil Race mighty figures who had established this defensive system likely had not anticipated.
Sanhe City's defensive system linked the surface and underground as one.
Under normal circumstances, no one could break into the underground Blood God Grand Formation that was resurrecting the Primordial Demon God.
As a result, the connection between Sanhe City and the underground Blood God Grand Formation was practically undefended.
Then, using blood aura and numerous negative auras as cover, Ye Zhen successfully infiltrated the underground Blood God Grand Formation beneath