As the vital blood sank into the array hub, Ying Yi's glow suddenly made Qin Fengming feel a chill run through his entire body.
At the sudden change, the incantation within Qin Fengming's body began circulating on its own. Suddenly, he felt the scene before him brighten. The mist shrouding the towering city wall ahead seemed to have suddenly grown thinner.
In that instant, Qin Fengming understood.
The protective array guarding Fengze City was not a single grand array, but was composed of an unknown number of identical arrays. In other words, each platform was itself an independent array.
For cultivators who climbed onto the city wall to avoid being obstructed by the array, they had to inject their vital blood into the array hub.
Only then would they no longer be repelled by the array, allowing them to freely unleash their divine abilities and techniques within it to attack the rampaging Ao Beast Vine Demons outside the city.
Although he did not know the exact workings of the array, Qin Fengming was certain that allowing cultivators who dripped in their vital blood to avoid rejection was merely one of its functions. The array must also be capable of monitoring those cultivators, preventing ill-intentioned cultivators from damaging the city's protective restrictions from within.
If one merely spoke of its power, such an array certainly could not compare with a single unified grand array.
But using these small arrays to guard the city wall was still highly advantageous for the cultivators of the Seven Great Prefectures, who were not lacking in manpower.
Even if one restriction were broken, the cultivator stationed at the array hub could immediately repair the damaged section and leave enough time to redeploy and activate the restriction.
After countless tens of thousands of years of battling the