When Patriarch Cao returned again, there was still a person behind him.

This is a rather cold man, probably not more than three years old, with long gray hair covering one of his eyes, and a purple mage robe to prove his identity, which is undoubtedly a thunder mage.

"So you really have a secret room...... Patriarch Cao. His voice sounded neutral, as if he was not interested in anything, and there was a faint disdain in his words, thinking that Patriarch Cao, a Void Realm martial artist, was a bit unworthy of his name, and he couldn't even solve this little problem.

His name is Cao Si, and he is very high in the Cao family's strength rankings, almost the top three, and his cultivation is also a middle level among high-level mages, so it is no wonder that he can speak in such a tone.

"Well, Zhou Tianshi is in the cellar below, this power grid is really difficult to crack......" Patriarch Cao naturally heard Cao Si's implicit mockery, but he didn't have a problem, this is the case, he can't walk through this power grid no matter what, if he wants to save Zhou Tianshi, he has to expose the secret and ask for support.

Cao Si walked to the power grid, originally just casually skimming, but he couldn't take his eyes off it anymore.

He was so stunned that his neck stretched out, and his eyes stared blankly at the arrangement and structure of the lightning elements in the power grid, and he froze for several seconds.

"Cao Si, Cao Si?" Patriarch Cao's voice gradually came, which made Cao Si sober up, but the shock in his eyes still did not disappear.

"What's wrong with you? I called you several times and didn't hear it?" Patriarch Cao was a little puzzled, isn't this just a white thunder net, what's so special?

"This ...... The person who arranged this thunder net is by no means an ordinary person, at least I can't do it......" Swallowing his saliva, Cao Si's gaze still didn't tear away, and after slowing down for a few seconds, he answered Patriarch Cao's question lightly.

"What?!, you can't do it?"

"It's not wrong, the structure in this, not only has a cycle, but also a deficiency filling device, which can make this thunder net extremely strong, ordinary martial artist moves, will not have any effect, it can be said that this is a barrier dedicated to restraining martial artists, you can't crack it, it's no problem, this has to be a virtual realm martial artist to rely on brute force to forcibly split, otherwise, don't even think about it!" Cao Si said the words in one breath, his expression was no longer the disdain just now, but revealed an extraordinary solemnity.

"Yes...... Is it?" Patriarch Cao had indeed had this experience before, but when he heard that Cao Si was able to explain the internal process and efficacy of the power grid, he couldn't help asking: "Then since you have understood it, it shouldn't be difficult to crack it." ”

"Definitely!" Cao Si shook his head, pulled his hands, and purple electricity appeared out of thin air.

"I can see that the doorway has nothing to do with completely cracking it, I can see that the structure inside is just because I am a high-level thunder mage, and I still have some opinions about this kind of thing, but if you want to completely crack it, you have to try it yourself, and you have to start from the root, step by step, which is not so simple. ”

"Moreover, the lightning is white, which means that it is arranged by a certain element, and on the surface, it should be accompanied by fluctuations and vibrations, which makes this power grid even more difficult to solve. ”

"To be honest, I'm not sure I'll be able to unravel it completely, but ......" Cao Si looked at Patriarch Cao.

"But what?" Patriarch Cao was a little dazed, he didn't know anything about these things in the law system, so after hearing Cao Si's analysis, he didn't understand anything.

"I can almost crack half of it, weaken the power of this power grid, and then, Patriarch Cao, you can unleash your most powerful move about the power of qi, so that the problem can be solved. Cao Si sighed and came to the final method and conclusion.

He himself hadn't studied the subtleties of the law system, and he didn't have the ability and talent to use them, so in the face of this power grid full of traces of the subtleties of the law system, he really couldn't break it all, which also made him feel a deep weakness, an absolute gap in the perception of the elements.

Somehow, he suddenly wanted to see who the person inside who laid out this power grid was sacred.

...............

At this time, Li Feng, who was in the cellar, was still absorbing and rejecting the elixir, and his surroundings were full of white gas, which gradually disappeared in the air, exuding an extraordinary heat.

Li Feng's clothes were already soaked with sweat, and the strength of his flesh, unconsciously, was also slowly improving, eliminating the miscellaneous winds and impurities inside his body.

The consciousness is very weak and helpless, like a leaf swaying in the wind, and like a lonely boat sail floating in the vast sea, drifting with the tide at the same time, but firmly in a certain direction.

Under the devastation of double pain, Li Feng can still persevere like this, I have to say, this is almost an incredible embodiment.

If you are an ordinary person, not to mention whether you can perfectly distribute the two energies in your body and point them to the middle of rejection and improvement of cultivation respectively, with the unbearable high temperature burning, it is enough to persuade a large number of people to retreat.

They may not even be able to do the second step, and their consciousness will fall into a state of dazed and sluggish, and they will completely become a vegetative person without thinking.

If Li Feng saw the scene in the secret room on the stairs, he would definitely be happy, fortunately he carefully arranged such a power grid, so that they were almost helpless, so that he could drag it out for so long, so that he could concentrate on completing his own nirvana.

Gradually, another period of time passed, and Cao Si above already had a clue, ignoring the large beads of sweat on his head, using the gesture that the Cao patriarch next to him couldn't understand, manipulating the thunder and lightning in his hand, waving in the power grid.

And Li Feng below was about to finish his retreat, and around the meditation, a layer of clear blue soft wind was inexplicably rolled up, and a force belonging to the high-level wind system was awakening.

And the electric current diffused in the wind is also showing that the power that belongs to the mid-level perfection of the thunder system.

An upcoming collision in Cao's house began to slowly kick off.

............

............

"Alright! Patriarch Cao!"

Cao Si's eyes lit up, and he casually wiped the sweat secreted from his face, and shouted excitedly.

"Got it!"

Seeing this scene, Patriarch Cao couldn't help but increase his confidence, so he re-applied his skills, and with the power of heaven and earth, he condensed a trident that was longer than a person.

"Trident! Split! Auger Spike!"

I only heard the sound of "sigh", and with the penetration of the trident after it was divided into three sections, Li Feng's power grid finally showed signs of collapse.

After those currents were splashed, they no longer had the ability to return and reshape, all thanks to Cao Si's hands and feet, although he could not directly disintegrate the cycle of this thunder net, but he could disrupt it, destroy it, and make it lose this key function, so that with the Cao clan Chang several rounds of onslaught, I believe that the power grid will soon disappear completely.

"Smack!"

"Smack!"

"Boom!"

The current dispersed and escaped into the air, except for the smell of paralysis, which still permeated, and the power grid, the white, still no longer existed!

"Success!" Patriarch Cao looked at Cao Si, and Cao Si also looked at Patriarch Cao, their eyes flashing with excitement and excitement, as if they had accomplished something terrible.

But at this moment, the sound of stepping on the stairs also sounded, which made the two of them instantly cool down their excitement, shook their heads, and looked at the bottom of the stairs.

The first thing that appeared was the blue hair, and then, Li Feng's figure gradually became clear, that face was full of a confident smile, and those eyes revealed depth and strength.

Cao Si and Patriarch Cao's bodies involuntarily moved closer together, and the aura exuded by Li Feng was completely different from before, making them panic.

In addition, the power grid that was painstakingly broken just now was made by someone else, which made Li Feng cast a mysterious and powerful veil in the hearts of the two.

Especially Cao Si, who knows the mystery of the power grid, has already had a strong admiration for Li Feng in his heart, and at this moment, Li Feng is only an eighteen or nineteen-year-old young man, which makes him unbelievable.

What's even more unbelievable is that he can only feel a not-so-powerful high-level aura on Li Feng's body, which is very inconsistent with the elemental perception ability that Li Feng has mastered......

"Are you the one who arranged this power grid!" Cao Si decided to question first, no matter what, he still didn't believe it, he thought that his cultivation was already a genius at the age of his twenties, but this Li Feng who suddenly appeared was several years younger than him no matter how he looked at it, how could he arrange a power grid that he couldn't unravel? How could he use the ability of the law system to the fullest?

Li Feng happened to walk to the top of the steps, that is, in this secret room, and when he heard Cao Si's question, he smiled and said, "Then in this place, besides me, who will be thundered?"

Cao Si seemed to be choked, a little speechless, indeed, only Li Feng could do this alone. The problem is that he's only a mid-level thunder mage, this ...... How is that possible? It's like going against the natural laws of the mage!

"You, you, what happened to Zhou Tianshi!" Patriarch Cao was concerned about another question, and he shouted as he pointed at Li Feng's nose.

Li Feng spread his hands and said helplessly: "Are you talking about the white-bearded old man? He wants to borrow my body to refine the pill, and I can only fight back in order to survive, No, the corpse is in the cellar, you can go and take a look." ”

"How can you!?" When Patriarch Cao heard this, he was so angry that his beard stood up, and his body trembled slightly, although he didn't believe Li Feng's words in his heart, but when he said this, people couldn't help but think that Zhou Tianshi might really die, which simply shattered the dream in his heart that he wanted to make the Cao family prosperous and strong!