After this exchange of blows, the doubts in Yi Chen's heart had finally been resolved. He understood why the Ninth Calamity had been given the title of "Undying," and why William was so concerned about this matter.
The fundamental reason zombies appeared as weak as ordinary people yet still reached "calamity level" was that they possessed an infection that surpassed the rules.
A simple comparison could be made.
The Fourth Calamity—Garp's "conceptual rigidity"—had received an A rating from Lighthouse Mental Hospital. Anyone who killed Garp, so long as they possessed the concept of a "seam"—even the vague seam in their thoughts—the seams in their memories would enable Garp's perfect resurrection.
Only primitive creatures like Yi Chen, who could completely shut down their thoughts and rely entirely on their killer instincts, could deal with him.
The zombie's conceptual rigidity was even one rank higher, reaching the highest detected value of S. In other words, it was already equal to or had even surpassed the upper limit of Lighthouse Mental Hospital's rating for this attribute.
As long as "individuals" still existed anywhere in the world or across the planes—people, apes, dogs, insects, and so on—even the dead under Yi Chen's command, and perhaps even plants could be included—
Once the zombie's main body was completely killed and every last cluster of viruses within him was thoroughly erased, the "concept of infection" would drift away and randomly act upon one individual or group of individuals, forcibly overwriting their consciousness with that of the "zombie."
As long as individuals existed, this process was bound to occur.
In other words, before the Great Annihilation ended, the zombie could never die.
That was the ultimate form of immortality, and that was why he could become a calamity. Yi Chen even suspected that the zombie's immortality had