Zhou Xu received Yalveth's message in the first month after autumn began.
In the letter, Yalveth clearly stated that she had already gone to inspect that desert region. The vast area was indeed covered by a massive formation, one that could even distort the perception of Vertical and Horizontal Realm warriors.
This largely verified Zhou Xu's earlier speculation.
That was, the sandstorm before had most likely been caused by this formation.
The formation contained defensive mechanisms. As soon as outsiders entered its range, those mechanisms would activate and whip up a sandstorm.
In terms of perception, mages of the same level definitely surpassed warriors by a wide margin.
But this was still enough to show that the formation was no low-level one.
Running into that formation would definitely be unwise.
For now, if the other side had no intention of expanding outward, then the best outcome was for both sides to stay separated by the formation and leave each other alone.
Out of caution, Yalveth undoubtedly needed to continue holding the line there.
At the same time, with so much time having passed and the Snake People never appearing, it could basically be confirmed that they had indeed died inside that formation.
Zhou Xu couldn't rule out the possibility that some had slipped through the net.
Even earlier, when their main forces had raced to attack the various oasis strongholds, the Snake People who had come under attack had fled in all directions. It was very possible that quite a few of them had escaped to other places at that time.
But as mentioned before, they had already occupied all the oasis resources in this desert region.
Even if you had escaped back then, what could you have done?
The final result would have been nothing more than dying silently