"Roar!" The zombie king which had sensed the danger suddenly turned and charged at where Lin Qiao was. 

Boom!

At that moment, Wu Chengyue's lightning bolt struck down and left a hole in a two-story building. Lin Qiao looked at the hole on the roof, which was about a meter in radius, guessing that the zombie king's lightning could strike off a corner of the building at most. 

However, seeing the zombie king rushing at her, she lost her interest in staying where she was and keep watching the fight. 

She turned and jumped off, then suddenly thrust her feet against the building and sent herself up to the roof of another building. In less than five seconds after Lin Qiao left the first building, the zombie king hopped on it, and soon leaped toward another direction. 

Soon after that, a lightning ball fell on the roof. 

Boom! 

'So close,' Lin Qiao sighed on another roof. 

The zombie king seemed to be infuriated as it turned and reached its arms toward Wu Chengyue. Following a series of rumbling thunder, the sky darkened, and then a faint wave of lightning bolts fell toward the latter's head. 

Seeing that, Wu Chengyue had no choice but to stop moving. He stood on a utility pole as he raised his head to look at the lightning bolts falling from the sky, then raised both hands and created a web of lightning himself. 

Just as he finished, the wave of lightning bolts fell on the web. Waves of thunderous noise could be heard from the sky while energies collided against each other, stirring the air and generating a strong gust of wind. Sands and stones were sent into the sky, along with the surrounding ordinary zombies. 

Both Wu Chengyue and the zombie king had thunder power, yet Wu Chengyue couldn't absorb the zombie king's lightning, because the energy contained in those lightning bolts was controlled by the latter. The zombie king's energy was violent, and was unable to merge with his lightning. 

If the zombie king's lightning struck his body, some serious damage would be caused for sure. 

Superpowered creatures could only absorb energies through energy nuclei, but not by any other means. Even the creatures with the same type of power couldn't absorb each other's energy directly. The energy nuclei in question included crystal nuclei, zombie nuclei, and the nuclei of mutant animals and plants. 

As Wu Chengyue stopped moving, the zombie king turned and fled toward West Lake. Lin Qiao quietly followed behind the zombie king to see where it was heading to. Judging by the look of Wu Chengyue, he didn't seem ready to let the zombie king go. 

How could he ever give up on the zombie nucleus of the level-six zombie thunder-powered king?

'That man doesn't look silly,' thought Lin Qiao. And as she had reckoned, after creating the lightning web, Wu Chengyue immediately turned into a shred of shadow and darted at the zombie king. 

As a matter of fact, he was even faster than Lin Qiao. 

He was at about ten meters away from Lin Qiao, following behind the zombie king side by side with her. However, only she could see him, but he hadn't sensed her at all. 

All three of them were swift. They didn't feel anything special, but if anyone saw them at the moment, they would see nothing but three blurry figures fleeting toward West Lake, without being able to tell if they were zombies or humans, male or female. 

Seeing more and more trees, Wu Chengyue suddenly had a hunch, then hurriedly waved a hand and threw out another lightning web toward the zombie king. 

The zombie king surely wouldn't let itself be covered by the lightning web, so it turned and dodged. 

And like that, another battle between the man and the zombie started. 

Lin Qiao silently hopped onto a signal tower nearby and crossed her arms as she continued watching the fight. Both Wu Chengyue and the zombie king were powerful beings. Wherever they swept across, all the buildings and plants were shredded by lightning bolts. 

Lin Qiao followed the two of them and watched them fight for two whole days. 

The zombie king seemed to fall in a disadvantage, yet its body had a high strike-resistance, and it always reacted quickly. No matter what kind of attack Wu Chengyue launched, it could always manage to dodge. It had suffered once, so the smart zombie king wouldn't let Wu Chengyue's seemingly weak lightning bolts fall on itself again. 

By following them, Lin Qiao was affected by their powers from time to time. However, she managed to dodge timely every time. 

Anyway, she followed them so closely with a good reason. If she sneakily showed up and stole the harvest when Wu Chengyue had almost disabled the zombie king…

'That man will be so angry! Hah!' She thought. 

'What level will Viney step into if I give it a level-six zombie nucleus? Will it be able to fix my body further? Or upgrade itself? Even if I don't need the energy, I can use it for upgrading Xie Dong and Junjun.' She thought.

With these thoughts, Lin Qiao had been following the two and waiting to collect the zombie nucleus. Meanwhile, Wu Chengyue had no idea that an invisible creature had her eyes on the zombie nucleus that he had been making efforts for. 

The zombie king too wasn't aware of the fact that apart from this powerful human being before its eyes, the zombie that he had scared off earlier was staring at it covetously as well. 

"Roar!" Some of the zombie king's muscles were burned by the lightning and fell from its body. Its muscles were filled with energy as well. So, as more and more of its muscles fell off under Wu Chengyue's attacks, the zombie king became less nimble than before. 

Its head was still attached to its neck, but an arm of it had been lost, and a hole was left on its waist. 

It had been running toward the park beside West Lake. If it didn't know that this area was full of mutant animals and plants, and if it wasn't smart enough to use those mutant creatures to stall Wu Chengyue for a few times, it would have been killed long ago. 

At the moment, Wu Chengyue didn't look good either. Many wounds were left on his body, and even his handsome face had a few tiny scratches on it. 

He gasped quickly for air, standing on a sculpture in the park. About ten meters before him, the zombie king was crawling forward on all fours. 

'Roar…' The zombie king weakly moved forward while growing. At that moment, another wave of rumbling thunder was heard. These days, thunder had been echoing across this area, even scaring off quite some animals. 

Wu Chengyue swung his arm and brought down a giant bolt of lightning that violently landed on the zombie king's body, pressing it to the ground and disabling it from moving. 

At that same time, a puff of black smoke rose. 

Wu Chengyue didn't dare to get close to the zombie king right now, as he wasn't sure if it had died or not. However, even though he didn't move, the air was stirred abruptly. After that, the zombie king's head was suddenly cut off by some unknown creature, and then disappeared within a blink!

The zombie king's head disappeared right before his eyes!