```
The box contained a piece of black metal the size of a walnut, light as a feather, and looking quite ordinary.
"System, what kind of metal is this?" Su Hang didn't recognize it.
"Congratulations, Host. This is an innate metal born from within Chaos—the Measureless Divine Iron, a top-tier primordial chaos metal."
"Sounds pretty fierce," Su Hang examined the Measureless Divine Iron, "but what makes it so fierce?"
The system asked, "What does 'measureless' mean?"
Su Hang replied, "It means incalculable, without limits."
The system asked again, "Do you understand now?"
Su Hang replied again, "Should I?"
"Dunce, try infusing it with immortal power," the Revival System was becoming more humanized.
When Su Hang channeled immortal power into the Measureless Divine Iron, its weight shot up dramatically, with more immortal power resulting in more terrifying weight.
The stronger one's cultivation level, the heavier they could make the piece of divine iron.
