C142 The first time he had bet on a stone was it luck or strength

His long, strong hands gripped a flat metal file with a bluish sheen and began to file. The beastman had a lot of strength, and even though he was using all his strength and the huge rocks fell off, he still looked very relaxed. "While observing, he shifted his angle, and soon, a piece of the jade was wiped out.

"Ah