"Bang, bang, bang..."
The sound of fists striking the Irregular Heavy Sword echoed through the stone hall.
Luo Zheng had lost count of how many punches he had thrown. Whenever cracks appeared in the Irregular Heavy Sword, it swiftly repaired itself.
After so long, even Luo Zheng's body began to feel a little fatigued.
Fortunately, the source divine blood was also repairing Luo Zheng's body. Several bolts of green lightning swept across the blood-red sky in his World Within and poured into his flesh, sweeping that fatigue away.
"Won't this go on forever?" Luo Zheng began to lose patience. "Can't you analyze the composition of life iron and attack its weaknesses?"
Previously, once Luo Zheng had analyzed his opponent's energy composition, he could swiftly deploy a countermeasure.
And those countermeasures had perfectly subdued his opponents. It had been true against "Kong," against A Huo, and even against Tongtian Jiaozhu.
Now it suddenly did not work against this life iron?
"Life iron naturally has weaknesses, but it is a substance from the Starry Sky World. After being downgraded, my abilities have little effect on substances from the Starry Sky World..." the source divine blood said.
This time, the seemingly omnipotent source divine blood had finally met a tough nut to crack.
"So we can only wear it down?" Luo Zheng asked.
"Yes! Against infinite power, something finite is certain to lose," the source divine blood replied.
"Good!"
Determination flashed through Luo Zheng's heart. He moved even faster, and the power he unleashed grew stronger.
Within the Black Heavy Armor, a pair of star-bright eyes held a trace of hope and a trace of sorrow.
The Human Spirit King, Bitter Tree, had likewise not awakened, but like the old man outside the door, he had a hazy awareness of the outside world.