After half an hour of tirelessly attacking the mountain's rocky side, Arad had made no progress at all. The stone seemed to be the most durable thing he had ever seen; even his full power breath might not be able to pierce it. And… He didn't want to cause a massive explosion and potentially harm his wives. It's not like they can move the mountain into a safe place for him to go all out on it.
This had told Arad two things, one is that brute force won't get him anywhere, and that he must have missed something. How could he get past a stone wall that's at least several kilometers wide if he can't even damage it? The dead heart should be at the center of the mountain, so Arad can't circle around it or dig his way through the ground; that thing is encased in the stone.
Shi inside his head laughed her guts out, calling him weak and daring him to swing his claws harder. Defeated by a rock, she called him.
