C497 Profound Iron

"Sir Lin Xiaoqiang, take a look at this piece of land and see what material it is made of." Lei Ao said.

"It's black iron. Why? Do you want to use black iron to forge a weapon?" Lin Xiaoqiang asked.

"That's right." Lei Ao nodded with a smile.

Lin Xiaoqiang smiled and said, "Black iron is the best material to refine weapons. If we can use black iron to forge a weapon