In a word, due to historical memories, the United Provincials are inherently very afraid of being "besieged".
But on the other hand, it is precisely because they are extremely fearful of being "besieged" that they are very well psychologically prepared for it.
Just like feeling at ease when the other shoe drops, after the United Provincials on Magit Island were trapped in Bishop's Castle, they showed no signs of disintegration. Instead, they became more motivated—at least that's the situation observed by the commanders of Iron Peak County.
From the moment they entered Bishop's Castle, the United Provincials began strengthening its defenses. They were like startled hamsters, frantically digging holes, excavating earth, and building walls.
Overnight, Bishop's Castle underwent a transformation—by comparison, the work done by the Mont Blanc County soldiers who previously defended the castle was indeed rather rough.
