ome research on rough stones. He wasn't just a useless playboy!"If it were possible to increase the drop rate of ores so that they guaranteed a gem every time, how much money could be made"Chen Ping s... against the wall. A hidden door swung open.Ning Zhi walked in, and then the door was shut.The room was filled with numerous magic artifacts and spiritual treasures. This was where Ning Dahai, Ning Zh...