The fog demon got up on four hands and began to absorb the mist again. After a few moments, he recovered again, and he looked stronger than before, and was a lap larger than he had just been.

When it recovered, it roared again, attacking the Black Lock.

And his attack this time was even more fierce than before.

Xue Yi can see that every time this fog demon is injured, it will be stronger after recovery. Whether it's speed, power, or explosiveness, it's all going to be boosted.

If it goes on like this, won't it get stronger and stronger, until in the end, Xue Yi and Hei Suo can't defeat him at all, and at that time, the two of them can only wait here.

Thinking of this, Xue Yi shouted to the black lock: "Stop fighting, run!

Judging from Xue Yi's observations, this fog demon mainly regained its strength by absorbing mist. Most likely, there was no fog on the mountain, so they had to run towards the mountain.

Hei Suo never doubted Xue Yi's words, and immediately pulled out his legs and ran towards the mountain.

When the fog demon saw that Xue Yi and the black lock wanted to escape, it actually let out two dry sounds like laughter from its mouth, and then plunged into the dirt and disappeared.

Xue Yi and Hei Suo ran for more than fifty meters, and the visibility around them was less than one meter again.

At this time, Xue Yi suddenly felt that his feet were empty, and his whole body sank downward.

The black lock next to him was also quick-eyed, and he grabbed Xue Yi with one left hand, and was about to lift it up, but at this moment, the fog demon suddenly rushed out of the mist and bit Xue Yi's neck directly.

This bite came suddenly, Xue Yi couldn't react at all, and when he wanted to react, it was too late.

The black lock was still holding Xue Yi's hand, and he didn't have time to react, so he could only watch as the fog demon bit Xue Yi's neck.

At this moment, a fiery red figure suddenly appeared beside Xue Yi, it was the skeleton dragon that had not appeared for a long time.

Before the skeleton dragon landed, a mouthful of dragon fire erupted, attacking the fog demon.

"Squeak-"

The fog demon's body was vaporized at an extremely fast speed when it encountered fire, like ice encountering fire.

The fog demon squeaked and jumped away, his head already half burned by dragon fire. But even so, it's still not dead.

The fog demon retreated five meters away, and then his mouth was pinched, and the surrounding mist was directly inhaled into his mouth. After absorbing enough mist, his head began to heal again.

But the skeleton dragon didn't give him a chance to recover at all, and with another flash, he came to the fog demon, and another mouthful of dragon fire erupted, covering the fog demon's whole body.

"Squeak-"

The fog demon let out an extremely terrible scream and kept struggling.

But soon, his body was reduced to nothingness by dragon fire.

Xue Yi finally understood at this time. Although the fog demon is immortal and indestructible, ordinary swords and even energy attacks are useless against it, but after all, it is formed by fog, and the fog will disappear when it encounters fire, so the fog demon is only afraid of fire.

After solving the fog demon, Xue Yi and Black Lock continued to run towards the mountain.

In the process of running, he encountered several fog demons, all of whom were sprayed to death by the skeletal dragon dragon fire.

Black Lock had never seen a skeleton dragon before, but now that he saw Xue Yi's skeleton dragon so powerful, he couldn't help but be very curious, and his white eyes were full of curiosity like a newborn child.

However, although the fog demon dies when it encounters fire, each fog demon will let out an extremely terrible cry before dying. These cries attracted the surrounding fog demons, and more and more fog demons rushed over.

Although the skeleton dragon can be sprayed to death one by one, its dragon power is limited, and there are more and more fog demons.

Xue Yi hurriedly said to the skeleton dragon: "Boss Dragon, there is not much dragon fire, save it, let's try to rush to the top of the mountain to see if there is any other way." ”

The two of them and one dragon continued to run towards the top of the mountain, and at this time, there were already more than twenty fog demons chasing after them. The Skeleton Dragon no longer breathes fire as aggressively as it used to, but only spews fire at the nearest fog demon.

Those fog demons were afraid of the skeleton dragon, and they didn't dare to get too close to Xue Yi and Black Lock.

However, there are more and more fog demons around, and there are always those who are not afraid of death who come to tempt them, and they are all burned to death by the skeleton dragon. And the dragon fire on the skeleton dragon is getting thinner and thinner.

There were already nearly a hundred fog demons around Xue Yi and Black Lock, densely surrounding Xue Yi and them.

Xue Yi and Black Lock kept attacking these fog demons with swords and maces as they accelerated towards the mountain.

However, the fog demon has more and more trends, and the top of the mountain is not known how far away, and the two seem to have no hope of escaping.

At this moment, suddenly, the eyes of the two lit up.

They had reached the top of the mountain.

Sure enough, as Xue Yi thought, there was not the slightest fog on the top of the mountain. Looking ahead, I saw that the top of the mountain was actually a circular platform with a diameter of hundreds of zhang. It's just that the ground of the platform is full of holes, as if it has been struck by lightning.

There was no time to take a closer look, and the two quickly escaped from the range of the fog.

The hundreds of fog demons behind chased to the edge of the mountain at this time, but they all stopped, as if they were very afraid of something, and did not dare to take a step on the platform.

Xue Yi guessed that these fog demons were transformed by mist, and they would gradually consume and eventually disappear after leaving the mist, so they didn't dare to catch up.

It was more than fifty meters away from the fog behind him, and seeing that those things didn't catch up, Xue Yi temporarily breathed a sigh of relief and observed the platform on the top of the mountain.

I saw that this platform was circular, hundreds of zhang in diameter, and the platform was surrounded by mist. On the platform, there are large and small potholes. There was nothing but these potholes, not even a single grass in sight.

But strangely, from a distance, in the far center of the platform, there seems to be a large tree, there are no leaves on the tree, and the branches are strangely twisted, giving people an eerie feeling.

Xue Yi wondered in his heart: This is Thunder Valley? But why is there no thunder and lightning? At the bottom of the mountain, he clearly saw a faint electric light on the top of the mountain......

Just as Xue Yi was thinking like this, in the fog behind him, there was a roar, which made Xue Yi and Hei Suo turn their heads to look.

At this glance, the two were all shocked.

I saw a huge figure walk out of the fog fifty meters behind him. It turned out to be a fog demon ten times larger than the other fog demons and nearly twenty meters tall - the fog demon king!

And the most terrifying thing is that other fog demons don't dare to leave the fog for half a step, but this huge fog demon is not afraid at all, and takes seven or eight meters in one step, directly stepping out of the fog.

Xue Yi was about to find a way to meet the enemy, but the black lock had already opened his fighting spirit, and the fighting aura covered his body and rushed towards the Mist Demon King.

When it was close to twenty meters, the black-locked mace swung out of thin air, and a cloud of fighting energy slashed through the sky and struck straight towards the head of the Mist Demon King.

Bang -

With a loud bang, after the fighting energy touched the body of the Mist Demon King, it exploded directly, blasting the Mist Demon King's face into a terrifying hole with a diameter of half a foot.

To Xue Yi's surprise, there was black blood flowing out of this big hole.

This Mist Demon King has actually evolved to flesh and blood.

What's even more terrifying is that after the Mist Demon King was hit so hard, the blood hole on its face was actually recovering at a speed visible to the naked eye, and in less than a minute, it was already intact!

Immortality and immortality, this is the real immortality!

Whew――

After recovering, the Mist Demon King roared angrily, and a giant foot stepped down towards the black lock.

The black lock rolls backwards, dodging the kick.

But one of the Mist Demon King's arms had already slammed towards the black lock, like a thick stick, bringing out a "whine" sound in the air.

It was too late for the black lock to dodge, so he could only try to prop up the douqi light mask and carry the blow hard.

Bang -

With one blow, the light mask shattered, and the black lock flew out more than fifty meters like a stone that had been thrown out.

The strength of the Mist Demon King was so strong that the black lock was an eighth-level martial artist, and he couldn't even withstand his blow.

The Mist Demon King blasted away the black lock and walked directly towards Xue Yi.

Boom, boom, boom......

With every step the Mist Demon King took, the ground seemed to tremble.

Xue Yi didn't make any other resistance at this time, because he knew that in front of the immortal and immortal Mist Demon King. Any resistance is futile. The only one who can hurt him right now is probably the Skeleton Dragon. But the dragon power on the skeleton dragon's body was not much left, and it was impossible to kill the Mist Demon King. So he had no choice but to turn around and run.

Although blood kept gushing out of the black lock in his mouth at this time, he saw the Mist Demon King chasing Xue Yi, and immediately stood up with his mace to support his body, and with a roar, he attacked the Mist Demon King from the side, and the mace slammed down, directly smashing one of the Toes of the Mist Demon King into a pulp.

But the meat puree seemed to be alive, and in less than a minute, it recondensed and returned to its original appearance.

But as the so-called ten fingers are connected to the heart, the Mist Demon King is no exception. Although his toes could recover, the pain made him stagger and stumble.

The Mist Demon King took two steps back, stabilized his body, and looked at the black lock, furious, a pair of eyeballs almost popping out of their sockets. He slammed down with one of his left hands and struck at the black lock.

The black lock also roared, and with one arm, he pushed up at the giant hand that the Mist Demon King slapped down.

Click――

His left arm was instantly shattered by the Fog Demon King's tremendous force, and the ground under his feet suddenly collapsed into a two-foot-deep hole.

But the black lock is worthy of being the black lock, even if he is so seriously injured, he is still standing proudly, his head is on the top of a giant palm of the fog demon king, standing like a giant, standing still. A few streaks of blood crept down his head, adding to the tragedy.

Seeing this, Xue Yi's eyes were split, and he roared angrily: "-"

The giant sword in his hand appeared, and he swung the giant sword and killed the Mist Demon King. At this time, he didn't care whether the giant sword had any effect or not, the only thing he thought about was to save the black lock. If he can't be saved, then even if he dies, he will have to bite off a piece of the Mist Demon King's meat.

The black lock was motionless at this time, standing with the giant palm on his head, and shouted to Xue Yi: "Go!

Seeing that the black lock could withstand his full force, the fog demon king was even more furious, and his other giant hand grabbed directly at the black lock. The five nails on the giant hand were sharp and sharp, piercing the black lock.

Puff puff......

There were five muffled sounds, and all five sharp claws sank into the black lock's body and pierced through his back.

"Black Lock!"

Xue Yi was furious, and the giant sword in his hand slammed into the Fog Demon King's feet.

Bang -

The surface of the Mist Demon King's feet collapsed instantly, and the sound of bones breaking was clearly audible, and a piece of flesh and blood was blurred.

But the surface of the foot is recovering at a speed that is visible to the naked eye.

The fierce fighting continues......