In the black thunder sea, it is extremely dim, the vision is blocked, and the things at ten feet are already unclear, and even the soul perception cannot penetrate twenty zhang away, and the low thunder sound continues to ring in the ears.

In the endless sea of black thunder, a thin figure struggled forward, constantly with a thick Heavenly Black Demon Thunder roaring, and then bombarded its body, under the impact of that terrible thunder power, the figure also trembled violently, and its skin became a little scorched.

However, in the eyes of that figure, there was a look of extraordinary determination, and the steps were extremely determined to move forward.

Under the bombardment of the Heavenly Black Demon Thunder, Mu Feng's breath also rose slowly, and the Holy Sun Thunder Xuan in his body, after fusing the thunder power of the Heavenly Black Demon Thunder, its luster also became brighter.

In Mu Feng's dantian, the Purple Spirit Thunder Source is also constantly absorbing the thunder power that pours into Mu Feng's body, and these thunder powers, like nutrients, allow the Purple Spirit Thunder Source to slowly absorb and grow.

And Mu Feng's cultivation of the Xuanlei Heavenly Dragon Body, although it had reached the third level and the Great Perfection Realm before, it was still a little lacking, but with the tempering of the Heavenly Black Demon Thunder, its physical body was also getting stronger little by little.

Under the continuous tempering of the Heavenly Black Demon Thunder, Mu Feng's breath strengthened little by little at an imperceptible speed.

......

"Sister Shuang'er, why hasn't Brother Mu Feng come out yet?" At the other end of the Heavenly Black Demon Thunder Array, Zeng Rou looked at the boundless black thunder sea. Said worriedly.

"Don't worry, he never does anything that he is not sure of, maybe he is using the Heavenly Black Demon Thunder to cultivate. ”

Although Ling Shuang'er was also a little worried. However, she still has great confidence in Mu Feng, she knows that Mu Feng has cultivated some martial arts related to thunder, so she also guesses that Mu Feng is using Tianwu Demon Thunder to cultivate his own martial arts.

"Cultivation?" Zeng Rou couldn't help but stick out her tongue when she heard Ling Shuang'er's words, she could feel the terrifying thunder power in the Heavenly Black Demon Thunder Array, if it was her, there was no lightning bead. It will definitely not be able to withstand the bombardment of the Heavenly Black Demon Thunder.

......

While Ling Shuang'er and Zeng Rou were talking, in the black sea of thunder, Mu Feng was still walking with difficulty. On the surface of its body, there were black and purple thunder arcs flickering and beating wildly, and the Holy Day Thunder Xuan also surged out from his body, an indescribable frenzied force. swept away from Mu Feng's body.

Mu Feng's face. Although it was full of pain, his lips were clenched, his eyes revealed a touch of perseverance and stubbornness, and in the depths of his eyes, a trace of clarity was never annihilated by that severe pain.

However, the deeper the Heavenly Black Demon Thunder Array, the Heavenly Black Demon Thunder became more and more violent and rich, and in the end, it was as thick as thunder pulp.

"Boom!"

In the depths of that black thunder sea, the size of the Heavenly Black Demon Thunder reached more than 100 zhang. The constant whistling came, bombarding Mu Feng's body. exploded all over the sky, and even the surrounding thunder slurry was constantly boiling.

Mu Feng took a few steps back, his body continued to tremble, but the Holy Sun Thunder Technique was still running to the extreme, constantly absorbing the power of thunder that invaded his body.

"Roar!"

It seemed that Mu Feng's tenacity aroused the anger of the Heavenly Black Demon Thunder, and in the depths of the formation, there seemed to be a low roar, and when the black thunder slurry was boiling, an incomparably black thunder dragon slowly appeared in front of Mu Feng.

This black dragon was obviously transformed by a heavenly black demon thunder, the dragon's body was filled with black thunder light, its body was extremely large, with a trace of violent and ferocious aura, and its eyes were flickering with cold and vigorous fluctuations.

The black dragon fiercely looked at Mu Feng, who was moving forward slowly, as if he had a spiritual intelligence, and immediately opened his hideous mouth, and a terrifying dragon roar roared out.

"Roar!"

A huge pillar of thunder light suddenly shot out from the black dragon's hideous mouth, tearing through the air, and then slammed into Mu Feng's body.

"Poof!"

Although Mu Feng had already pushed his defense to the extreme, when he was bombarded by this thunder pillar of light on his body, he was still shocked and his blood surged, and a mouthful of blood spurted out wildly.

Its body trembled violently, and there was a black thunder arc beating wildly on its surface, and long cracks broke open on its strong body.

However, the Holy Sun Thunder Xuan, the Purple Spirit Thunder Source and their physical bodies were still frantically absorbing the power of thunder that had invaded their bodies.

Seeing that Mu Feng was not killed by himself, there was also a hint of annoyance in the eyes of the black dragon, and his hideous mouth opened again, and a pillar of thunder light that was thicker than just now shot out, and blasted towards Mu Feng again.

"Boom!"

The pillar of thunder light directly hit Mu Feng's body, and the black thunder light quickly spread to Mu Feng's limbs and five remains, making Mu Feng's body wrapped in black thunder.

On the surface of Mu Feng's body, the skin and flesh were all exploded, blood was splashed, and his face was also distorted into a ball, extremely hideous and terrifying, obviously the kind of severe pain coming from his body made it difficult for Mu Feng to bear.

But even so, the speed at which Mu Feng's body absorbed the power of thunder not only did not slow down, but became faster and faster, and the power of thunder was swallowed away by Mu Feng's body.

Seeing this, the black dragon became more and more furious, and thick black thunder continued to bombard Mu Feng's body, and the black thunder and blood mist in the sky wrapped Mu Feng's figure tightly.

Seeing this scene, the black dragon's heart was filled with a trace of unease, but when it sprayed the thunder pillars again, those thunder pillars exploded directly on its periphery, and it couldn't get close at all.

Time passed slowly, and it was three days in a flash, and the black dragon quietly stared at the blood mist, and the uneasiness in his heart became more and more intense, and from time to time he let out bursts of low roars. It could perceive an extremely powerful aura coming from the blood mist.

"Boom!"

Suddenly, the blood mist that had been silent for three days exploded, and a thin and tall figure appeared in the pupils of the black dragon, and the young man's body flashed with purple thunder, and an indescribable terrifying aura swept away from his body.

Mu Feng opened his eyes, the corners of his mouth drew an arc, and his palms slowly clenched, feeling the power surging in his body.

The third level of the Xuanlei Heavenly Dragon Body has finally reached the realm of Great Perfection!

What was lacking before was that the power of the dragon clan's essence blood was too strong, and the power of thunder was too weak, so although the Xuan Thunder Heavenly Dragon Body that he had cultivated had reached the third level, he had never been able to reach the point of Great Perfection.

Today, with the help of the thunder power of the Heavenly Black Demon Thunder, this lack of supply is finally filled.

Mu Feng believed that with the third-level physical strength of this Xuan Thunder Heavenly Dragon Body, he would be able to confront the powerhouses of the Great Perfection Realm at the peak of the Ordinary Wandering Realm, and with other means, even if he didn't use the ferocious power in his body, he would be able to defeat the powerhouses of the Great Perfection at the peak of the Ordinary Wandering Realm.

"Roar!"

Mu Feng could feel an unprecedented power, and couldn't help but look up to the sky and howl, the howling sound was like thunder, and faintly the sound of a dragon's groan spread out, and even the low thunder was suppressed.

"Boom!"

The sound of thunder echoed, and in this black thunder sea, there were monstrous thunder waves, causing the black thunder pulp to tumble as if boiling, and even the entire Tianwu Demon Thunder Array was buzzing and trembling.

Mu Feng's gaze slowly moved to the black dragon, and the corners of his mouth showed a hint of sarcasm, and said, "You're cool, it's my turn now." ”

As soon as Mu Feng's words fell, the soles of his feet slammed into the air, and the surrounding black thunder pulp exploded into countless black pulp pillars, and then condensed into a thunder giant spear, blasting towards the black dragon.

"Boom!"

The thunder spear slammed into the black dragon, and the black dragon also roared, and its breath was much weaker, so it turned around and fled.

"Haha......"

Watching the black dragon flee away, Mu Feng couldn't help but laugh heartily, he also recognized this black dragon, it should be the thunder spirit of the Heavenly Black Demon Thunder.

It's just that he still has some doubts in his heart, how could the thunder spirit of the Heavenly Black Demon Thunder be so weak?

"This is just a split of the Heavenly Black Demon Thunder Thunder Spirit, if it was really the Heavenly Black Demon Thunder Thunder Thunder Spirit, I'm afraid you would have been bombarded into slag long ago. Qingyu's voice came from Mu Feng's body.

"Where is the real Thunder Spirit?" Mu Feng asked with some curiosity.

"The real thunder spirit, I can't sense it, but I can sense it, the real thunder spirit, I'm afraid that the strong people of the Martial Sect can't withstand the power of a thunderbolt. Qingyu said lightly.

"Shhh

Mu Feng couldn't help but gasp, he didn't expect the thunder spirit of the Heavenly Demon Thunder to be so powerful.

"Forget it, I'll go out first, Ling Shuang'er and Zeng Rou are outside, they should be in a hurry. ”

Mu Feng shook his head, exhaled, and said, his figure was also in the air, and his body was tearing through the black thunder sea and swept away into the distance.

It seems to feel Mu Feng's power, although in the black thunder sea, the Tianwu Demon Thunder is getting more and more intense, but it does not fall on Mu Feng's body again, but he senses Mu Feng's arrival, and actually takes the initiative to avoid it from afar, so that Mu Feng, who still wants to absorb some thunder power, is a little bitter.

However, without the obstruction of the Heavenly Black Demon Thunder, Mu Feng's speed was much faster, and after a few hours of sweeping, he had faintly reached the end of the Heavenly Black Demon Thunder Array.

However, Mu Feng's brows furrowed suddenly, because he had already felt extremely violent energy fluctuations from outside the Black Demon Thunder Array that day, and there were some fluctuations that he was extremely familiar with, which were Ling Shuang'er's aura fluctuations.

Mu Feng's face suddenly became gloomy to an extreme, and the soles of his feet stepped suddenly, and even the space under his feet seemed to be torn apart. (To be continued......)