Millennium Yin Iron

As he returned to the Cai Family mansion, Jia Hao spent his days in leisure. Old Yang brought him some of the sample weapons used by the soldiers.

' These are simply made from pig iron. So hard and brittle. The grains inside are also very uneven.' Jia Hao inspected the items.

However, as these weapons were mass produced for the war, quantity is more appreciated than quality.

Besides, the quality of the iron was poor. Because, most of the time, the scrapped weapons and armor collected from the battlefield and melted directly.

After separating the impurities, the remaining material is used to make more weapons.

However, after such tempering in flame, the recycled sword becomes more brittle, impacting its performance.

But when he checked the sword, Old Yang was surprised.

" Old Yang, Why your sword is almost three times better than these ordinary swords?"