"Boom!"
One punch shook heaven and earth, bringing the entire charging horde of mutant beasts to a halt.
His immortal essence power, threaded with purple thunderclouds, splashed outward in every direction from the point of impact like water striking the ground.
Nearly every Fierce Beast in its path was annihilated.
"He's too strong, far stronger than I imagined."
"How did he do that? That punch looked like he stacked all his immortal essence power together."
"This newcomer is an absolute monster."
"I... never mind. I'll just keep being the little brother."
Even the arrogant Long Aotian had to bow his head before that punch.
But their shock was destined to be short-lived. The other mutant beasts would not give them time to marvel. When those in front died, those behind surged forward, seemingly without end.
After throwing that punch, Zhang Hongxing quickly retreated. His immortal essence power recovered completely in less than five seconds, but he could not keep using the Thundercloud's power.
By his estimate, he needed about half an hour before he could unleash purple lightning of that magnitude again.
Without that purple lightning, his attacks were roughly on par with those of the three peak Immortal Venerables.
When those three peak Immortal Venerables used their magical artifacts, he was even slightly weaker.
And so the battle began.
One day, two days, three days...
Day and night, without sleep or rest.
With Zhang Hongxing joining them, the other Immortal Venerables finally had a rare opportunity to take turns resting, but that was all. Beyond relying on the array formation to continually replenish their immortal essence power and resist the mutant beasts' attacks, there was nothing they could do.
Let alone fight their way into the Classic of Mountains and Seas Plane, which was teeming with mutant beasts.
Soon,