C276 Digging a Hole in the Wall

Yang Lin shook his head and said with a wry smile, "Thunder bombs aren't omnipotent, it's fine to blast open an ordinary wall, but with such a thick wall, if we just throw some explosives at the edge of the wall, there's nothing we can do. The hill is too long and too long for us to set up a catapult or throw a thunderbolt bomb on the wall. "

The power of the gunpowder right now wasn't great