The undead monsters had always been reluctant to face Zhou Tian directly in battle, not because they lacked military power, but because they utilized the terrain to wear down their enemies. To scatter the enemy forces, those undead monsters didn't mind allowing the enemy to capture some of their territories. However, in the same vein, while the undead monsters didn't mind losing some territory in pursuit of their goals, they wouldn't let Zhou Tian have his way when he tried to consolidate their territory.
Based on the usual habits of these undead monsters, they had long prepared a method to deal with opponents like Zhou Tian, who intended to first consolidate the newly occupied territory before advancing further.
As a result, soon after Zhou Tian halted his march, a large number of undead monsters emerged from their hiding places within the territories originally occupied by Zhou Tian.
