Lu Chen only felt that his eyes were dark. Although he had experienced the Black Mist Valley breaking the seven-star ban, the seven-star ban was to attract the Big Dipper above the nine heavens, and use the power of the seven stars above the nine heavens to seal the white bones. And the underground ban is to form a dense silk network of fire with the help of the essence of fire!

Underground bans are very different from seven-star bans.

Gu Linglong couldn't use the power of knowing the sea to break the ban, and Lu Chen could only ponder it slowly by himself. The power of knowing the sea extended with all its might, spreading deep in the ground like mercury pouring into the ground, and suddenly the silk wire fire net with a radius of one hundred zhang was in full view of Lu Chen.

I saw silk threads completely condensed from the essence of fire, crisscrossing and weaving into a shimmering net of fire, and the net of fire seemed to catch something.

Lu Chen took a step, and his figure kept flashing in the forbidden mine, and the power of knowing the sea moved.

After a while, a flash of surprise flashed in his eyes. As he continued to flicker in the forbidden mines, the power of sea knowledge had already explored the area within a thousand zhang radius of the ground, and the fire net seemed to have no end.

Lu Chen thought for a moment, and suddenly understood, the underground ban was huge, and even if he explored Qianzhang Fangyuan, he didn't get a glimpse of the whole picture of the ban. I'm afraid that walking through every corner of the forbidden mine road may not be able to get a glimpse of the whole picture of the ban! As soon as he thought of this, Lu Chen paused and secretly pondered how to break a corner of the underground ban and peek into the ban.

A silk thread condensed entirely from the essence of fire, a net of fire...... Lu Chen combed it little by little, time passed slowly, and after combing it through, he gradually had some clues in his heart.

"What are you thinking?" Seeing Lu Chen frowning and pondering, Gu Linglong asked.

Hearing this, Lu Chen came back to his senses from his contemplation: "I'm thinking about how to open the corner of the ban without breaking it." ”

"Wrong! Wrong!" Gu Linglong shook his head and said, "You are not a formation master, where can you come up with any perfect method to break the ban, and breaking the law with force is what you should do." ”

"What if the ban is broken and it is out of control!" Lu Chen also thought of breaking the law with force, what he was really worried about was what would happen after breaking the ban.

"Don't worry, with me, nothing will happen. Gu Linglong said in his chest.

Lu Chen's face darkened slightly when he heard this, and he was not without worry in his heart, when he had just used the power of the ban to condense the sea knowledge, Gu Linglong wanted to completely open the sea knowledge dragon gate by himself, and as a result, his knowledge of the sea dragon gate almost collapsed! Gu Linglong didn't say this at the moment, it was a little better, as soon as she said this, Lu Chen felt that she couldn't break the law with force, and she needed to think of a better way.

Seeing this, Gu Linglong's fishtail swayed slightly, and said: "A dense network ban composed entirely of the essence of fire condensed into silk threads, this kind of ban is definitely not low! If you can't destroy the core of the ban, even if you break a corner of the ban, the entire ban will not completely collapse, but the ban will recover itself." ”

"Really?" Lu Chen's eyes revealed a hint of suspicion.

"Of course it's true!" Gu Linglong's tone was firm, and the fishtail swayed slightly as he spoke, and then he said: "If you think about the situation in the Black Mist Valley carefully, although Tian Gaoluo of the Qingxiao Sect broke the corner of the seven-star ban, he could have completely destroyed the seven-star ban. ”

When Lu Chen heard this, he knew in his heart that the seven-star ban had indeed not been completely broken, otherwise, with the terror of the white bones, even if Gu Linglong was a dragon girl, I am afraid that he and Gu Linglong would not have been able to escape from the hands of the white bones.

As soon as he thought of this, Lu Chen made a decision in his heart. It must be extremely difficult to perfectly crack the underground ban, and it is relatively much easier to break the method with force. Since the flame threads in the forbidden fire net were completely condensed from the essence of fire, he first used the proverb of fire to refine the essence of fire into the sea of knowledge, and then refined the essence of fire in the sea of knowledge into the origin dragon crystal.

Before starting, Lu Chen told Gu Linglong about his plans.

After Gu Linglong listened, he pondered for a while, and suddenly shook his head and said, "You have forgotten what happened before? Once the essence of fire enters your sea of consciousness in large quantities, your thinking and judgment will be affected! This method does not work, you can change it again." ”

"There's no better way. After that, Lu Chen ran the proverb of fire, and the power of knowing the sea stretched out to the fire net like a tentacle, and selected a slightly weak fire essence silk thread among the many silk threads to refine, but even so, the fire essence silk thread picked by Lu Chen was about as thick as chopsticks, and he didn't know how long it was.

In an instant, a stream of extremely rich fire essence surged down the tentacles of the sea of knowledge towards his sea of knowledge, and at this moment, the tentacles of the sea of knowledge seemed to be dyed, turning into a silk thread full of flames.

It didn't take long for a large amount of fire essence to pour into his sea of consciousness like a flood beast, much more than the fire essence he had obtained when he stripped off the fire attribute spirit stone and refined the dark red spark before. With the influx of the essence of fire, Lu Chen only felt that by absorbing and refining more essence of fire, he would be able to reveal the secret of the essence of fire, but he did not urge the origin dragon crystal to refine the essence of fire, obviously his thoughts were once again affected by the essence of fire.

And with the continuous influx of the essence of fire, the sea of knowledge in a square circle was gradually dyed red, and in just a short time, there were more than thirty percent of the sea of knowledge flame light waves.

Seeing this scene, Gu Linglong hurriedly cast a secret method, her voice pierced into the depths of Lu Chen's soul, and hurriedly shouted: "You have been affected by the essence of fire again, hurry up and urge the essence of fire that the origin dragon crystal refines and merges into the sea of knowledge." ”

Hearing this, Lu Chen's body trembled suddenly, he came to his senses, and hurriedly urged the Origin Dragon Crystal, and wisps of fire essence escaped from the sea of knowledge.

The tentacles of the sea of knowledge draw the essence of fire into the sea of knowledge, while the origin dragon crystal devours the essence of fire and refines it into dragon qi. If the latter can't be faster than the former, his sea of knowledge will eventually be completely encroached upon by the Fire Essence. As soon as he thought of this, Lu Chen urged the Origin Dragon Crystal with all his strength to refine the wisps of fire essence into his own dragon qi, and after a while, the flame light in the sea of consciousness gradually shrank. Seeing this, Lu Chen secretly breathed a sigh of relief.

I don't know how long it has been, Lu Chen suddenly grabbed Gu Linglong, who had turned into a white jade fish, in his hand.

Gu Linglong hid in her sleeves, and she didn't expect that Lu Chen, who was refining the essence of fire, would suddenly hold her small fish body in her hand. At this time, Gu Linglong was ashamed and annoyed, and the white jade fish gradually turned into a red jade fish, and shouted at Lu Chenjiao: "What are you touching me for, take your hand away!"

Lu Chen was slightly stunned, the current Gu Linglong is just a small white jade fish, this is also called touching, even if he is hungry, he will not do anything to a fish. If it was replaced by Gu Linglong in the form of a girl, Lu Chen would not mind.

"You're now free from the influence of the Fire Essence, don't think I don't know, if you don't take your hand away, I'm going to cast the Dragon Clan's secret method on you. Seeing that Lu Chen showed no signs of letting go, Gu Linglong said angrily.

"Linglong, don't make trouble. Lu Chen said, "Now I need you to draw dragon qi from my Origin Dragon Crystal!"

At this moment, the fire essence silk thread that Lu Chen had selected from the fire net ban had not yet been refined, and his origin dragon crystal was about to be filled with dragon qi. If the Origin Dragon Crystal was completely filled, he would not be able to continue refining the essence of fire in the Sea of Consciousness into his own dragon qi. When he decided to break the law with force, Lu Chen had already taken this into account and broke the corner of the underground fire net ban, and Gu Linglong was also one of them.

Hearing this, Gu Linglong suddenly became stunned, but her face was still not very good-looking, and said, "I know, you let go quickly." To be like this, I-I can't draw dragon energy from your Origin Dragon Crystal. ”

"Oh. Lu Chen let go.

After letting go of Gu Linglong, Lu Chen immediately noticed that the dragon qi in his Origin Dragon Crystal was passing rapidly, and Gu Linglong was absorbing the dragon qi at a rapid speed.

At this moment, every link of breaking the law with force has been opened. Lu Chen ran the Proverb of Fire to integrate the essence of fire into the Sea of Knowledge, and then urged the Origin Dragon Crystal to refine the essence of fire integrated into the Sea of Knowledge's own dragon qi, and the dragon energy in the Origin Dragon Crystal was absorbed by Gu Linglong.

After about half an hour, the thick silk thread of the chopsticks became as thin as a hair. Lu Chen, who knew the sea and communicated with the silk thread, suddenly his eyes lit up, and he knew in his heart that it would not be long before this fire essence silk thread completely disappeared, and the other fire essence silk threads had not yet made up for it, the underground ban would be opened for a while.

"This thread of fire essence is about to be completely refined, and the underground ban will be opened for a while, but it shouldn't be too long. Lu Chen said.

"The moment the underground ban is opened, you will probe a wisp of sea knowledge into it to see what treasures are hidden inside. Gu Linglong's fins flapped and said excitedly.

Lu Chen nodded and continued to refine the essence of fire.

After a while, the fire essence silk thread disappeared completely, and an extremely thin gap appeared in the underground seal, while the surrounding fire essence silk thread slowly wriggled, as if to close the gap. Lu Chen hurriedly looked at the underground ban through the gap, only to see that the ban was pitch black, and he couldn't see anything, and Lu Chen immediately extended a wisp of sea knowledge into the gap when he saw this.

Sensing that there was a crack in the ban, suddenly the black gas was tumbling in the ban, and the arrogance was monstrous, and then the rolling black gas seemed to smell Lu Chen's sea of knowledge. However, the black qi in the ban seemed to know that it was impossible to completely escape through this gap, and only split into a cloud of black qi and shot towards Lu Chen's Zhihai Dragon Gate.

Lu Chen's power of sea knowledge rushed towards the seal, intertwined with the black qi that shot towards his sea of knowledge. The power of knowing the sea instantly passed through the crack of the ban, but it was still pitch black in the ban, and nothing could be seen. "It's pitch black in the ban, there's nothing. Lu Chen said.

"There is obviously a powerful ban, how can there be nothing?" Gu Linglong was slightly disappointed when she heard this, and said, "You take a closer look." ”

And at this moment, the billowing black qi under the ban suddenly stirred, cutting off the wisp of sea knowledge that Lu Chen had probed into the ban and swept away, Lu Chen's body trembled suddenly, his face turned a little pale in an instant, and a throbbing flashed in his eyes.

"What's wrong?" asked Gu Linglong.

Before Lu Chen could answer, a cloud of black qi from passing through the gap in the seal circled in the air, and then rushed through the Zhihai Dragon Gate into his Zhihai. Lu Chen's body trembled violently again, as if he had been hit in the chest by an invisible hammer out of thin air, his face was instantly pale, and the corners of his eyes slowly overflowed with red blood.

With a pale face and blood spilling from the corners of his eyes, Lu Chen's appearance at the moment looked miserable and hideous.

"What's the matter?" asked Gu Linglong.