The effect of the thunderstorm was indeed extraordinary, but the raging electric spark also deeply angered these pterodactyl monster birds.

Seeing that the few tentative monsters in front of them were covered in bruises, the seven or eight pterosaur monster birds squatting behind fluttered their wings and flew up, attacking one after another from the front and above Lu Chengfeng's heads. The thunder clone that Zu Liang separated was detonated almost instantly. The flame demon that acts as cannon fodder is also ferocious, but it is destroyed in the same round.

At this moment, the dense sound of breaking the air and the crisp sound of the ice ridge sounded.

Liu Yubing's icy spear shot out at these pterodactyl monster birds. Although the ice guns were almost all hit in this narrow range, the damage was shared by several pterodactyl birds, and it did not have a good effect. Because they were not afraid of death, the attacks of the Liu family sisters and Lu Chengfeng's evil light slash not only did not repel them, but made these monsters even more brutal. A heavily injured pterosaur monster bird, even though it was on the verge of death, stretched out its claws and scratched at Lu Chengfeng's chest.

Although the inheritance armor perfectly blocked this blow, this crazy attack made the faces of the six people change.

"Come to me!"

Seeing that the momentum was not right, Zu Liang shouted, pushed forward with his hands in the void, and the seal condensed into a mental qi cover. With his efforts, this bright golden eggshell covered all the six people gathered together. At this moment, he almost gave up the attack, and used all the mental qi of his whole body to maintain the mental qi cover.

In the next moment, four or five pterosaur monster birds broke through the defenses of several people, and the cannonballs generally hit the Nian Qi Hood.

That huge force not only made the flexible Nian Qi Hood shake violently, but also made a loud thumping sound. Liu Wendao, who was standing at the back, was a little frightened, and it was even a little difficult to maintain the spell casting, for fear that this mental qi shield would not be able to block the pterodactyl monster bird's attacks in turn.

Fortunately, Liu Yuhan's flame impact came again.

After adjusting the angle, the blazing flame was enough to engulf the four pterodactyl monster birds and toss them into the air. Due to the small size of the space, the blazing fire wave once spread to the surrounding strange birds, causing them great trouble. Seeing that the effect was good, Liu Yuhan decisively added another flame blasting technique, which vividly reflected the high damage of fire magic.

Such a series of counterattacks caused the losses of the pterosaur monster birds to increase rapidly.

From the first two to be hit hard, to now most of them are injured, these pterosaur monsters also realize that these people in front of them are not easy to mess with. Especially the Dao Ming dangling Nian Qi Hood, if it can't be broken, it will never be able to hurt the people inside. However, under the conscious protection of Lu Chengfeng and the Liu family sisters, the pterosaur monster bird really didn't break it so easily.

Under the anger, one of the pterodactyl monster birds roared fiercely, and its body suddenly glowed red!

This unusual scene immediately attracted the attention of the six people.

However, before they could confirm the effect of the red light, the pterosaur monster bird, which had been charging for a second, suddenly moved. Under the amplification of the red light, it slammed into the telekinetic shield with a speed that was almost contrary to common sense, with a devastating force, at a speed that the six people could not react to. Because the speed was so fast, its figure even left a red band of light and afterimage in the air, and Lu Chengfeng and the others didn't have time to intercept it.

Hearing only a bang, the golden mental qi cover dimmed sharply, and a spiderweb-like crack appeared in the place where it was hit.

But fortunately, Zu Liang, who was trying his best to maintain the enchantment, even though he looked quite struggling, still blocked this blow stubbornly!

Such a high-speed impact was also an extremely heavy burden on the pterodactyl monster bird. Its strong body and head could be seen as a large chunk of depression, and several places of flesh and blood were blurred. However, this strange bird, which was affected by the magic of Sky City, completely ignored its own life. Prompted by the attack, it staggered and turned around and flew back, and a red light appeared on its body again.

"Oops!"

Zu Liang's scalp was a little numb, as the owner of the Nian Qi Mask, he knew the force of the impact just now. As a sixth-order high-level monster with no special abilities, the Pterodactyl Monster Bird is known for its flight and strength. Coupled with the blessing of red light, the impact force just now was really no less than the full force of a seventh-order master's blow. The current Nian Qi Mask will definitely not be able to block the second red light impact.

At the critical moment, Lu Chengfeng did not disappoint him.

No matter how fast the speed of the pterosaur monster bird is, there is always a limit, and it is impossible to exceed the sixth order too much. Just now, I was caught off guard just because I wasn't prepared. This time, after seeing the speed of the previous time, Lu Chengfeng activated the blood shield, and at the same time put on a splitting wave slash starting pose, concentrating on the movements of this pterodactyl monster bird.

The red light flashed suddenly!

This is the moment!

Before he had the eye of the heart, Lu Chengfeng couldn't see through its specific movements, but this did not prevent him from predicting with superb consciousness. At the moment of the flower in front of him, he immediately swung his sword and slashed the wave. The light wheels that rotated up and down staggered up and down took shape in an instant, forming a buffer on the outside of the recitation hood.

In normal times, the Split Wave Slash was enough to withstand a blow from a sixth-order master. However, the speed and strength of the pterosaur monster bird in the red light state are too amazing. Although Lu Chengfeng was half lucky and half strong, the light wheel was not enough to withstand such damage. The traction fluctuation force above did not affect it at all. Lu Chengfeng only felt that as soon as his right hand was numb, the light wheel was shattered, and he didn't even have time to guide the shattered Ice Ridge Sword Qi to counterattack.

However, the pterosaur monster bird that broke through this barrier failed to break through the mental qi shield as expected.

The blood shield with a longitudinal umbrella bone vein happened to appear in the middle of the Wave Slash and the Nian Qi Hood, becoming the second buffer barrier. There was no doubt, under that huge force, Lu Chengfeng's blood shield was also broken in an instant. The huge recoil force made him stagger back two or three steps.

But that's the end of the onslaught of the pterodactyl monster bird.

In an instant, it broke through the Wave Slash and broke the blood shield, and the impact of the Pterodactyl Monster Bird had been buffered to the maximum. When it finally collided with the Nian Qi Shield, the power was already almost the same as the impact of an ordinary pterosaur monster bird. In the case that Zu Liang had been prepared, he was successfully prevented.

It itself suffered a fatal blow to the head due to a series of fatal impacts, and fell to the ground dead after flapping its wings a few times.

I didn't get a third impact!

This result made Lu Chengfeng and them breathe a sigh of relief. Moreover, among the more than a dozen pterosaur monster birds, it seems that only it has the highest degree of mutation, and the other pterosaur monster birds do not have this acceleration skill.

That's the only thing to be thankful for.

Without this pterodactyl monster bird that was infinitely close to the seventh order, Lu Chengfeng and their counterattack were able to continue. With the new round of magic of the Liu family sisters, with the attacks of Lu Chengfeng and Chen Liu, three or four pterosaur monster birds were either killed, or were severely injured and lost the strength to fight back.

With the sharp decline in the number of pterosaur monster birds, the pressure on the six people also decreased sharply.

Without the numerical advantage, the pterosaur monster bird faced them alone, which was not cheap at all. Zu Liang was also able to put away his aura shield and return to the attack. With his damaging cannon, the attack of the six was like an autumn wind sweeping away leaves, and the battle was completely resolved in less than a minute.

None of these monsters escaped and were eventually killed!

Although they successfully eliminated the pterosaur monster bird with zero casualties, they had just arrived on the twentieth floor of Sky City, and they encountered such a level of fierce battle, which undoubtedly poured cold water on their heads. Having experienced the dangers of this place for myself, everyone's heart sank. Everyone knows that as long as the search continues, such battles will continue one after another.

"Let's go. ”

After the Liu sisters broke the silence, the six continued on their way.

Continuing to walk forward, Lu Chengfeng and the others could see mottled blood stains on the ground from time to time, as well as the corpses of pterosaur monster birds. I think it was the search and rescue team sent by the Mage Guild before them, and they fought here. At the bend in the hallway, they also saw a gnawed corpse on the ground. The fragments of the mutilated mage's robe clearly proved his identity.

It's really miserable.

Not to mention the sisters of the Liu family, even Lu Chengfeng was a little uncomfortable when he saw this scene. It's just that there is a clearer goal, and they don't waste too much time on a dead man. After destroying a few more white pterodactyl monster birds on the way, the six of them crossed the Sky City and arrived at the stone staircase that ascended to the twenty-first floor.

The sisters of the Liu family were worried that because of the different routes they chose, Gu Lan would pass by them. So, near the stone staircase that went up, he wrote a floating text with the flame element, and left a small formation that could warn after being triggered. If Gu Lan passes by here, she only needs to trigger it once to let the sisters of the Liu family know.

This is undoubtedly a very safe means, and the Liu sisters have left a similar mark on the previous journey.

Taking advantage of the time when the two sisters stopped to set up, Lu Chengfeng looked through the pane near the stone staircase and looked at the scene outside the Sky City.

The height here is already six or seven hundred meters above the ground. Looking out the window, you can see the peninsula forest at the end of the magic circle. In the midday sun, the scenery outside is magnificent. It's just that the blood and scales near the pane made Lu Chengfeng quickly lose his mind to appreciate it. This spread a trail of tens of meters, silently recounting to him the previous battle here.

"It's dangerous. Lu Chengfeng sighed, and saw that the Liu family sisters had been arranged, so he quickly chased after him. However, the twentieth floor is still so dangerous, let alone the twenty-first floor above. The cloisters on this floor are in the shape of a crossed "8", and the number of brown dragon head statues is several times more than before. In addition, at the edge of the wide cloister, there are many white grid guardrails more than a meter high. In these places that are easily ignored by the naked eye, deadly dangers are hidden!