With the help of her space, Lin Qiao found it much easier to control her netherworld fire to absorb energy from those creatures. Gradually, the energy that she absorbed from those creatures refilled her empty zombie nucleus.
Wu Chengyue had his eyes on the strongest monster outside, while the level-seven ones had all been brought into Lin Qiao's space. At the moment, only the level-six ones were left to be dealt with. But still, except for Qiu Lili and Lin Kui, the zombies found them very hard to kill!
Qiu Lili sent a level-six zombie up into the sky with her wind power and then let it fall heavily. Falling from a low altitude couldn't kill it, but if she brought it too high up in the sky, it would have the time to adjust its posture midair, and eventually land perfectly unharmed.
"Roar!" The level-eight creature in the pit suffering endless lightning strikes launched by Wu Chengyue suddenly gave a raging roar and shambled slightly on the bottom of the pit before springing out. Following its roar, the surrounding underground creatures turned around and started falling back.
"Eh? They're retreating!" Qiu Lili had her eyes glowing.
Lin Kui pressed a level-five underground creature down on the ground, then turned it over and fiercely clawed at its belly.
Puff! The skin on that creature's stomach, which was the most fragile part of its body, could still be counted as strong. Lin Kui's sharp claws only left a few shallow wounds on that creature's skin but failed to rip the creature open. Only a slight amount of blood seeped out of those wounds.
Lin Kui immediately bit on those wounds, then pressed the creature, which was struggling intensely, with all fours as he started ripping its belly with his teeth. He enlarged the wounds on the creature's stomach with his teeth, then poked his claws into the wounds to stir inside its stomach.
"Roar…" The severe pain coming from its stomach made the creature struggle desperately. However, Lin Kui easily pressed it down on the ground, no matter how hard it struggled. Soon, its stomach was covered in blood, and its guts were dug out.
The surrounding underground creatures all started moving back toward where they came from. Unlike them, the level-eight one couldn't leave so easily. Following rumbling thunders, lightning bolts struck at it one after another. One or two bolts of lightning could barely cause it a pain, yet suffering constant lightning strikes could be very painful!
The level-eight creature realized that it wasn't able to defeat the man who could summon lightning and lead its army forward. So, it decided to retreat. The other reason it did that was the group of level-seven subordinates of its had all disappeared, which made it worry.
Wu Chengyue, of course, wouldn't let it go just like that. He planned to kill the creature, so that it wouldn't have a chance to come out of that underground cave and cause trouble again. Stronger lightning bolts fell from the sky, every single bolt powerful enough to tear down a small building. However, each lightning bolt only managed to leave a fist-sized wound on the level-eight creature's body.
At the moment, the creature's body was covered in wounds like that. That kind of injury wouldn't kill, it but did cause a severe pain.
The level-eight underground gorilla didn't want to fight Wu Chengyue. All it wanted was to free himself from his attack as soon as possible. However, no matter how hard it tried to dodge, the man followed closely behind it, constantly attacked it with lightning. Gradually, the underground gorilla lost its patience.
As it grew more and more agitated, the red light shining out of its skin grew brighter and brighter. The light turned orange from red, then yellow; at last, it almost turned white.
Wu Chengyue had a feeling that the enormous creature might be launching some kind of attack. So, he prepared to step backward cautiously.
However, at that very moment, a meter-thick beam of light suddenly burst out of the ten-meter-tall creature's body and poured straight on Wu Chengyue. Being shrouded in that pale-yellow light, Wu Chengyue felt as if his brain was vibrated, and then his mind blurred.
After two seconds, the underground creature retracted the light before quickly turning and running away from him. It leaped toward the nearest entrance to the underground cave, covering over ten meters with one single leap.
Wu Chengyue was left standing there motionlessly, without generating another lightning strike. Meanwhile, the thunderclouds in the sky faded slowly.
As Wu Chengyue made no move, no one else was able to stop the level-eight creature from running away. Soon, that huge creature disappeared into the darkness, and so did the other underground creatures.
The zombie crowd under Lin Qiao's order followed closely behind those creatures.
"Eh?" Qiu Lili killed a level-six underground creature with a great effort, then noticed Wu Chengyue's weird behavior. She saw him standing there, watching the level-eight underground creature run. So, she flashed to his side, prepared to ask him about what was happening.
"Why did you let that thing go? Couldn't you stop it?"
However, Wu Chengyue didn't answer her question.
Qiu Lili found that his eyes were closed. She didn't know what he was doing. "Oi!" She raised a hand and waved it before Wu Chengyue's face.
Wu Chengyue still didn't respond to her, but his energy suddenly erupted.
"Ah! This is not good!" Qiu Lili burst in scream and swiftly disappeared from before Wu Chengyue. A second later, she reappeared high up in the sky.
At that point, dark clouds gathered above Wu Chengyue's head again, and muffled thunders were heard. Wu Chengyue abruptly opened his eyes which were glowing with a purple light. Both his pupils had turned purple. Meanwhile, waves of thunders could be heard from the sky.
His energy started leaking out of his body, forming a five-meters-wide swirl around his body. Everything within that area was shredded by his energy into dust and then vanished. As his energy erupted from his body, the thunders from the sky instantly grew louder and thicker. Lightning bolts seemed ready to fall from the sky.
"This… This guy is going crazy again!" Qiu Lili popped her ruby-like eyes as she stared at the man and murmured in shock. Next, she flashed back to Lin Kui's side.
"What happened?" Lin Kui raised his head to look at the sky while asking Qiu Lili.
Wu Chengyue seemed to be pretty strong. He thought the man would be able to finish off that huge monster. But unexpectedly, the monster shone a beam of light on him, and then he let it go.
He let the monster go, and then his energy exploded. He didn't lose control of himself again, did he? Didn't that already happen once? How come it happened again?
"Something is wrong with the light that the creature released just now. Otherwise, how could Wu Chengyue suddenly become like this?" said Qiu Lili.