After all, not every sect is as lucky as the Taichu Sect.
Though this is because the Taichu Sect had hidden something before, Taichu Zhenren did not expect that they would encounter such powerful lightning.
Moreover, the most important thing is that the lightning could actually take human form, and not only did it take human form, but it became incredibly powerful after doing so. This is something no one anticipated.
This is why such severe casualties occurred; it wasn't anyone's fault, but they weren't prepared and dissipated recklessly.
In fact, regardless of who encountered such a situation, even the most cautious individuals would act separately in unfamiliar territory, because occupying territory quickly requires initially securing several major corridors and then gradually extending towards the center.
