If you look at Cloudsdale from below, it looks like an island with holes floating in the sky, and the entire island is supported by dragon stone pillars.

There are land and freshwater lakes on the islands, and living on them is like being in a sea of clouds, and it is a paradise on earth.

As the holy city of the angel clan, the city in the clouds can be said to be an inch of land, and every inch of land on it is very precious.

In order to allow all the clansmen to have a place to stay, each city lord will develop every inch of land to the extreme.

So if you look down from above, the number of streets above Cloudsdale is actually very small, and many of them are dead ends, replaced by majestic buildings.

Flying is the instinct of the angel clan, and with the shortest shortcut to the sky, who will have nothing to do with a detour on the ground, so the streets are dispensable for them most of the time.

In order to make the most efficient use of every inch of land, the Angels will build a basement under the house to store supplies when building a house.

And it is their good habit of making the ultimate use of every inch of space that allows them to now have a hiding place that can cope with the enemy's fire attack.

Why did Ning Yuan dare to take the initiative to give up the sky battlefield, wasn't he afraid of the enemy setting fire and transporting troops to it?

The answer is obvious, he simply has no fear.

Cloudsdale is located in a sea of clouds, a height at which angelic warriors consume a lot of stamina each time when they transport elven rangers through hanging baskets.

Basically, every group of five people, once a day, the transportation must be stopped, otherwise they will not have the strength to participate in the battle once they encounter a sudden battle.

Vampire warriors are known for their agility, and their durability is not as good as that of angel warriors, so even if they were allowed to transport troops up, they would not be able to transport millions of demon armies overnight.

And if the vampire legion really dared to devote all his energy to transporting troops, it would be just as Ning Yuan wanted, and he would not hesitate to lead the angel legion to kill him.

Waiting for work, this kind of beautiful thing Ning Yuan will never let go.

Obviously, Blood Wuji was not a fool, so he didn't give Ning Yuan this chance.

Although in the end, Blood Wuji sacrificed the physical strength of 500,000 vampire warriors and transported 100,000 demon warriors to Cloud City, these 100,000 people could not pose much of a threat to Cloud City, because they would not be able to reach the Coiling Dragon Heavenly Ladder before dawn.

The Vampire Legion can ignore the terrain on Cloudsdale and fly directly over as long as they know the exact direction, but the Demon Warriors don't have the ability to do so.

If the demon army wants to reach the Coiling Dragon Ladder, they will have to face the few streets of Cloudsdale.

There were already many dead ends in Cloud City, coupled with some passages that Ning Yuan had ordered everyone to artificially block and the harassment of those defenders in the houses on both sides of the street, the demon army might not even be able to complete half of the journey this night.

Ning Yuan dared to let those demon armies come up, he was already fully prepared, as long as they could hold out until dawn, then no matter how many demon armies came up, it would eventually become their meal.

As for the enemy's fire attack strategy, since each house had a huge basement underneath, Ning Yuan was not worried at all.

As a modern person, Ning Yuan is very aware of the horror of fire, and he also knows very well how to save himself when he can't escape.

The most terrifying thing about a fire is not the ubiquitous heat flames, but the toxic smoke and possible lack of oxygen.

When the flame burns, it consumes a lot of oxygen and produces a lot of carbon dioxide, and if you are in the fire for a long time, you are likely to die from lack of oxygen.

Although Ning Yuan was unable to artificially produce oxygen, the fire was burning outside the bunker, and there were no flammable materials inside the bunker, so their real enemies were lack of oxygen, high temperatures, and toxic smoke.

The smoke is generally moving from the bottom up, and they hide in the basement, and as long as they seal it well, the smoke cannot threaten their lives.

Although the flames consume a lot of oxygen in the air, since there are no open flames inside the bunker or in the basement, there is enough oxygen in them to breathe for a long time.

Unless the enemy burns frantically for a few days and nights, they will not encounter the problem of lack of oxygen, after all, the air is always circulating, nature has its own balance, and the enemy does not have the ability, before dawn, they must leave.

As for the high temperature, it was even simpler, Ning Yuan asked people to place a large number of water tanks in the basement, and the water tanks were filled with cold water, and he also asked people to prepare a lot of ice-based magic crystals, once the temperature was too high, they would put the ice-based magic crystals into the water tank to cool down.

Although these are all theoretical knowledge, Ning Yuan himself has not practiced it, but science is rigorous, and it is the crystallization of the sweat and wisdom of countless ancestors, so Ning Yuan has always believed in this.

Of course, nothing in the world is absolute, so Ning Yuan also left a back hand for himself.

If none of these methods worked, then Ning Yuan could also take people down to the top of the Panlong Heavenly Ladder, because the bunker he was in was built on the exit of the Panlong Heavenly Ladder.

When the vampire army threw down the firewood, Ning Yuan immediately led people into the basement, then took off a clean yo and began to take a bath.

About two hours later, suddenly there was a brass bell overhead.

After hearing the bell, Ning Yuan immediately jumped out of the water tank, and after putting on the armor, he pushed open the lid of the basement and rushed out directly.

In order to prevent the demon warriors from climbing up from under the Coiling Dragon Ladder, Ning Yuan deliberately asked people to set up some small mechanisms, as long as someone touched them, the bell placed at the exit of the ladder would ring.

Now that the bell is ringing, it is clear that an enemy has sneaked up from below.

When Ning Yuan pulled out the Flame Sword and came to the exit, the wooden plank covering the exit had already been lifted from below, and a burly demon warrior rushed out along the exit.

"This damn hidden setting."

Seeing the wooden plank that had been lifted by the demon warrior, Ning Yuan secretly scolded himself as he rushed towards the enemy.

As the only natural wonder, Cloudsdale has many hidden settings in addition to those attributes on the surface.

The Angel Clan will not be unable to resurrect because of the destruction of the corpse in Cloud City, and the inability to block the exit of the Coiling Dragon Ladder is also one of them.

If the Coiling Dragon Ladder can be blocked, then as long as the only exit is sealed with a boulder, the enemy will not want to climb up from below.

It's a pity that sealing the exit is not allowed, and through many tests, Ning Yuan found that he could only cover a wooden board on it, and then there could be nothing else, not even standing on the wooden board or pressing stones.

Hans, as the supreme commander of this demon death squad, rushed up only after being notified by the vampires.

According to those vampires, the fire burned for more than two hours, and in the end, it was only after Blood Wuji sent people to pour water with wooden barrels for half a day before it was extinguished, and the enemies inside must have been dead, they only needed to rush up and occupy the area around the Coiling Dragon Ladder.

But what's the matter with this guy in front of you who is still dripping with water all over his body?

Didn't you say that the enemy had already been roasted to death?

Seeing Ning Yuan, who was still dripping all over his body, Hans was also surprised.

And when he saw the Flame Sword in Ning Yuan's hand, he immediately recognized Ning Yuan's identity, and then immediately rushed towards Ning Yuan with a roar.

After dodging Hans's attack and cutting it off with a sword, Ning Yuan slaughtered the other demon warriors who were constantly rushing out of the exit without looking back.

At this time, those angel warriors and elven warriors under Ning Yuan also rushed over, and with their help, Ning Yuan quickly killed all the demon warriors at the exit, and then took advantage of the situation to kill them.

The Panlong Ladder only allows two people to pass side by side, and this kind of terrain is simply a one-man affair.

Ning Yuan stood there with the Flame Sword in his hand, and the demon warriors below couldn't rush up at all, and when he rushed down to kill, the demon warriors below also couldn't resist his attack, just a moment of effort, Ning Yuan rushed down more than ten meters.

After sweeping back a demon warrior who was desperately rushing upwards with a single sword, Ning Yuan suddenly turned around and began to run upward.

As soon as he ran out of the exit of the ladder, the angelic warriors who were waiting on the side immediately pushed down a prepared stone ball.

As the stone ball rolled down the ladder, a scream suddenly came from below.

"Alright, let's all take their places, the enemy won't set fire again tonight."

After hearing the enemy's screams, Ning Yuan let out a sigh of relief, fortunately, he was a step up in skill, and he should be able to spend this night safely.

......

While Blood Mowgli set the fire, Brooks was leading an army of demons to besiege every house in the vicinity.

When Brooks stepped on the land of Cloudsdale, his heart was filled with pride, but just as he was about to lead the demon army to the Coiling Dragon Ladder and then directly capture it, the cruel reality suddenly made him sad.

The layout of the buildings above Cloudsdale was so dense that they couldn't tell the difference between the east, the south, the west, and the north.

Although the vampire legions led by Bloody War lead them in the sky, the enemies hiding in the buildings do not want to let them go.

As they headed down the street, a large number of cold arrows suddenly shot from the surrounding buildings.

Due to the proximity, the scale armor on their bodies could not block all the arrows, and many of the demon warriors who were hit by the key fell in pain.

Originally, Brooks didn't want to pay attention to those cowards who would only hide in the shadows and release cold arrows, but the enemy's new arrows were too much of a threat to them, and in just a few moments, they suffered thousands of casualties.

If they continue to choose to ignore it, then according to this casualty ratio, by the time they reach the Coiling Dragon Ladder, I am afraid that there will not be many people left, so Brooks has no choice but to send people to capture the houses located around the street.

He could only hope for now that the enemy had simply set up ambushes in the houses on the outskirts, so that they would still have a chance to reach the Panlong Ladder before dawn.

However, Brooks soon sensed what despair was.

When the demon warriors tried to storm the stone houses where the enemy was hidden, they couldn't find any breach to break into.

The door of the stone house had been blocked from the inside, and no matter how much they hit it, they couldn't break it open.

Some of the low windows have also been completely sealed, and it is simply not possible to break through the windows.

Only the windows in the heights are open, and the enemy is shooting through the holes in the heights.

When the demon warriors finally reached those windows by building a human ladder, a huge bumper log suddenly swung out of the stone house, and some demon warriors were caught off guard and flew out directly.

Seeing that his army had suffered heavy losses but could not break through those stone houses, Brooks was so anxious that he broke out in a cold sweat, and he raised his head and shouted loudly to the sky: "General Blood, General Blood, please come down and talk about it, I have something important to discuss." ”

"I wonder what General Brooks is looking for me?" Hearing the shouts, the bloody battle immediately flew down.

"General Bloody War, you see that those stone houses are easy to defend and difficult to attack, the only breakthrough is in high places, my soldiers lack tools, and in the face of this kind of defense, it is difficult for them to attack, so I want to ask General Bloody War to send your vampire warriors to help us attack."

Looking into the eyes of the bloody battle, Brooks pleaded sincerely.

"General Brooks, there are some things I don't know if to say or not."

"Everyone is in the same boat now, if you have anything to say, it doesn't hurt if the bloody general talks about it."

"Cloudsdale is full of these tall stone buildings, and if there are enemies in every building, is General Brooks still going to take them all?" Staring at Brooks, he asked in a deep voice.

"This..."

Brooks was dumbfounded by the bloody battle.

"But if we leave it alone, then my army will definitely suffer a lot of casualties, and then what will we do to capture the Panlong Ladder?"

After hesitating for a moment, Brooks looked at the bloody battle and asked.

"The real protagonists of tonight are the Arson Legion led by General Blood Mowgli and the Demon Death Squad led by General Hank, and we are only a minor link in the double insurance here.

If General Blood Mowgli succeeds and we can get there, it's the icing on the cake, and if we can't get there, then we will have to improvise.

If General Bloodless fails, we will probably be able to help you in the snow, and if we can't, then this legion under your command will be alone, and whether or not you can evacuate safely is a question. ”

Hearing Brooks's questioning, Bloody War smiled and gave him a detailed analysis of the current situation.

"General Blood, what do you mean by that?" Seeing that the bloody battle made his legion dispensable, Brooks's face immediately changed.

"Literally, if you want to make meritorious contributions, then you can't be a mother-in-law, you should rush over as soon as possible.

If you want to preserve your strength, then it's best to stay in a safe area on the edge, and if we fail tonight, we can take you down. ”

Seeing that Brooks' face changed, the bloody battle was suddenly not polite.

These modified stone houses are obviously a delaying tactic for the enemy, in order to hold them back, and anyone with a little intelligence can see it.

But this Brooks still has to send troops to attack these stone houses.

At first, Bloody War thought that he didn't want to go to the Panlong Heavenly Ladder and wanted to capture the next place here, so he asked tentatively at that time.

But he never expected that this guy would still want to go to the Panlong Ladder and attack the stone house just to reduce the casualties of forcing through, which suddenly made him very speechless, so he directly chose to have a showdown with the other party.

"We're going to the Coiling Dragon Ladder."

Brooks replied categorically, very resolutely.

"Then don't care about the casualties, we will guide you from above, and you don't want to entangle with the enemies who are hiding in the shadows, and rush straight over."

Seeing that Brooks had made a decision, Bloody Battle directly gave his own advice.

"Okay, then ask the General of Bloody War to show us the way."

......

"What's going on? What the hell is Hank? Why haven't you come up yet? ”

The fire had been extinguished for half an hour, but the demon death squad that was supposed to come up still didn't make any movement, and Blood Wuji gradually began to get a little impatient.

"My subordinates will take someone over to have a look."

Seeing that Blood Wuji's face was a little unsightly, a vampire general beside him immediately volunteered and flew over with a team of vampire warriors.

When they landed around the bunker at the exit of the ladder, a rain of arrows shot out of the surrounding bunker.

"Damn."

Looking at the sudden rain of arrows, Blood Wuji's eyes widened, and the green tendons on his forehead burst out.

Although they don't know exactly what happened, the appearance of the rain of arrows has already told them that the enemy in the bunker is still alive and that their fire attack strategy has failed.

And this would explain why Hank didn't show up for a long time.

"Go see where Brooks' army is?"

After the failure of the fire attack, Blood Wuji pinned his last hope on the army led by Brooks, as long as they could get here in time, then there was still hope.

It's a pity that Bloody Wuji is destined to be completely disappointed tonight, and when he learns that Brooks is still a long way from here, he can only choose to return again in vain.

When the warm sunlight fell on Cloudsdale again, the Demon Alliance had already gone to the ground, and if it weren't for the corpses of those demon warriors on the outer streets, I'm afraid no one would have thought that a large number of enemies had invaded here last night.

When Ning Yuan opened the stone gate of the bunker and looked at the mess outside, he couldn't help but sigh: "Learn mathematics, physics and chemistry well, and travel all over the world, the teacher really didn't lie to me." ”