The four words, "the lesson of the overturned cart ahead," made Second Grand Authority Priest Tong Na's expression go blank for an instant.
Then shame, helplessness, resentment, anger, and countless other emotions revolved across Second Grand Authority Priest Tong Na's stunned face like images on a revolving lantern.
This time, the Bloodlight Fortress defensive grand formation had been sabotaged, and Bai Tai, commander of the Zhennan Legion, along with a host of senior generals, had been killed. Every traitor had come from the Ancestral God Hall.
One of them had even been an Assistant Priest of considerable standing within the Ancestral God Hall.
The most fatal part was that after the incident, despite investigating for so long, they had found nothing.
The upper echelons of the Ancestral God Hall were no fools. They had basically already guessed the origins of these traitors.
But the fatal part was that even with their suspicions, even after deliberately investigating in that direction, they still found nothing.
They had investigated the two traitors not merely through three generations of ancestors, but through eighteen generations. Every trace of their lives and upbringing that could be investigated had been investigated, yet they simply could not determine when they had been lured into betrayal.
After examining everything, their life histories, upbringing, and family backgrounds were so spotless that there was not the slightest flaw to pick at.
Not being able to find anything was the most terrifying part.
Naturally, the Ancestral God Hall understood this lesson of the overturned cart ahead as well.
Originally, after the two priest defections, the Ancestral God Hall had intended to follow the vine to the melon and launch a massive purge, thoroughly cleansing out any possible traitors.
Yet after investigating again and again, the two appeared utterly spotless. The Ancestral God