C726 Prepared to Build an Overweight Flying Sword

"What is it?" Ning Caichen said with a smile.

"Look!" Small Shadow took out a piece of pitch black iron from the Interspatial Ring.

Ning Caichen smiled bitterly. He didn't expect it to be a piece of black iron.

He took it and examined it. The small piece of black iron weighed more than a thousand catties.

The black iron smithing weapon was very sharp