C212 He Had to Seek Justice..

"What kind of rock is this? Why is it so incredibly hard?"

Zhang Wei brushed the curled hair from his forehead aside, mopping the sweat from his brow. The curved machete in his hand could only manage to leave a half-inch crack in the tough rock, proving ineffective at prying the whole rock free.

Du Shaofu hadn't taken action yet. He glanced up at the towering stone wall