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The magic crystal bombs that the dwarves filled the walls with were so powerful that they would have been blown to pieces if they were a normal player. It's a pity that the attack on the wall is a bell hammer demon like Sazaras, and although they are extremely miserable with their rough skin and thick flesh, they are not in danger of life. But without the help of a few bell hammer demons, then Samoru will not be able to quickly smash through the wall and attack the dwarves.

Because no one knows if the dwarves will also plant such bombs on the back walls, if the bell hammer demon is bombed, at least it will not be killed, but if the power demon mad demon is bombed, even if their physical defense is not low, they will not be able to withstand such a terrible explosion. Fortunately, although the dwarves built the walls very quickly, they could not build three or four walls in half an hour. Although they used the tactics of simultaneous construction, time-sharing and closure. Relying on the dwarves' own strong building abilities, coupled with the human resources of many players, a five-story wall was built in half an hour.

However, only the outermost two of the five layers of the wall were fully constructed, and bomb traps were placed in the second layer of the wall. Originally, the dwarves thought that the demons would destroy the traps and kill at least dozens of them by bombs in the future, but the results were beyond the dwarves' expectations. The demons broke through the first wall too quickly, at least a quarter of an hour faster than the dwarves had expected.

According to the calculations of the dwarven craftsmen, it would take at least twenty minutes for the demons to crash into the wall, but unfortunately they calculated that most of the demons were force demons. The Bell Hammer Demon is a demon that is even more terrifying than the Demon of Force, which makes the dwarves miscalculate, although their strength is not necessarily stronger than that of the Demon of Force, but it is in an ordinary state. Because of the small environment, Sazaras and the bell hammer demons could not use the mega magic to turn into giant demons more than ten meters high, but it did not mean that they could not make their arms bigger when they hit the city wall while carrying the battering ram. Although the power of the Hammer Demon in the ordinary state is not comparable to the Hammer Demon, the Hammer Demon that can make a part or even the whole body giant is the most terrifying. In fact, Sagrather is a special kind of bell hammer, except that he does not have the demonic horns of the bell hammer.

At the same time, Sagrather can also use the Giant Technique to make his body even larger. But for him who has already reached the strength of the Demon Lord, the ordinary giant body is actually not much use, even if he expands his body to a hundred meters, it will not increase his strength much, and the most important thing is that he actually has no way to expand his body to a hundred meters. Sagrasser, who has the strength of the Demon Lord, has always kept his body in a state of giantization, and only in this way can he be slightly more comfortable, because he does not have demon horns, which makes him feel inferior, so he can only use this state to make him feel a little better. But it's because it's always in a huge state. This gave Sagrather a deeper understanding of the ability of megaglossation. When an ordinary Hammer Demon becomes a giant to a height of more than ten meters, its strength is dramatically amplified, but a Hammer Demon of the level of Sagraser can perform a second Mega Transformation after it has been maintained in a giant state and formed a normal state, but the increase in strength is not much.

As a result, Sagrather rarely uses megaglossation, so most demons don't know that Sagraser is actually a bell hammer demon. It is actually a very important thing to hide the roots of his race in the demon world, for example, Samoru himself is rarely known what his true demon race is. Because in battle, if the demon race is known. It's easy to find a way to restrain yourself. If they knew the special features of the Hammer Demon, they would probably have placed a bomb behind the first wall and seriously injured the Hammer Demon Sazaras first, then the second wall could kill more demons, instead of standing on the edge of the third wall that had not yet been completely built and watching the dust generated by the explosion.

Although the dwarves have breached the second defensive wall against the demons. But they only stayed for a moment and immediately began to stop what they were doing, and one by one the magic crystal cannons were pushed against the wall that was not yet completely completed. After a little fiddling, small gaps appeared in the solid rock of the wall, just enough to allow the muzzle of the magic crystal cannon to stick.

"Kill all the dwarves!!" This was the only thought that came to Samora's mind after the smoke cleared, and he waved his hand lightly to let the demons carry Sasaras and them to the back, but Samoru didn't know that his action had sent several Bell Hammer demons into the tiger's mouth. Latamicius, who stayed behind, saw the bell hammer demon who was carried down without saying a word, and directly gave the other party a snort, and then the stored bell hammer demon became Latamicius's most loyal lackey, the undead bell hammer demon. The last impression that came to Sazaras's mind was Latamicius' face that was getting closer. A deep regret, he regretted that following Samoru, the unlucky demon lord, not only was he bombed, but in the end, he didn't even save his life.

Sameras was in no mood to pay attention to the final outcome of the Bell Hammer Demons in Sazaras, because all his thoughts were focused on the battle in front of him, and the undead troops who rushed out of the streets with their shields held high were constantly blown up from the ground by the magic crystal cannonballs fired by the dwarves. Standing in the rear, Samo could clearly hear the dense rain of explosions, and the shells were raining down the road less than twenty meters wide as if they didn't need money.

"Shoot! Send me these skeletons to the grave! Shoot!!!! "Loren? The copper ingots roared on the low wall, if it weren't for the fact that the wall was too narrow, it is estimated that he would choose to stand on the wall with his troops to resist the undead at this moment. But now he could only stand on the wooden steps, watching the undead that kept approaching the wall in a hurry. Due to the hasty construction of the wall, there is no way to stand on the wall, and the scaffolding made by the dwarves is used to place those magic crystal cannons at the moment, and there is no extra place for the dwarven warriors to settle down, once those undead get close to the city wall and then climb up, it is definitely not a good thing for the dwarves who are engaged in defensive battles.

But there was nothing the dwarves could do at the moment, but the fourth wall that was being built behind had begun to change. More materials were used to construct a place where the warrior could settle down. Although the walls will inevitably be thickened, and the materials and time required to guide the walls will increase, the same amount of defense will also increase. But if you are climbed up the walls by the undead. Then even the strongest defense will eventually become useless waste.

Watching the undead troops gradually approach the wall, a smile slowly appeared on Samoru's face. He was well aware of the fatal flaw in the walls built by the dwarves, which was that there were not enough places for people to stand. While the dwarves might be able to solve this problem with wooden shelves, looking at the sparse guards on the walls, Samoru knew very well when the undead rushed to the walls en masse. This number of guards alone could not stop a single onslaught of the undead.

Although Loren? The old dwarven man was wrapped in gauze and kept shouting and screaming on the wall, but the dense cannonballs still couldn't stop the undead. For a small Crystal Cannon, which mainly deals damage from fragments, the power of the explosion is not enough to instantly shatter the body of the undead, unless the cannonball hits the target head-on and explodes around the opponent's body, otherwise the fragments of the flying cannonball will only break a few bones at most. At the same time, the number of magic crystal cannons that can be arranged under the wall is actually not much, and it is not as large as the number of magic crystal cannons lined up when the wall was not built before. After all, the dwarves didn't plan to fight the demons on the third wall in the first place. Most of the magic crystal cannons were pulled to the back. Even if these magic crystal cannons can be pulled very quickly, as long as they are pulled with a rope, they can lift the cannon body and run around, but it still takes time to arrange the turret. The most important thing is that the barrel is easy to pull, but the shells are not easy to carry. After all, each cannonball weighs three or four kilograms, and the cannonballs made by the dwarves are really good in terms of material and weight, but because of this, these cannonballs are very difficult to carry. Each dwarf fires a round with a dozen shells. Fifteen shells in one minute is 75 shells, 75 shells for four kilograms are 3oo kilograms, and in less than two minutes, the dwarves fired at least 15o shells, which is 6oo kilograms of shells.

If the weight alone isn't enough to make the dwarves scratch their heads, what really makes the dwarves scratch their heads is that these shells are not very safe. Although it can't be said to explode when you knock it, it will explode if it encounters a very strong collision. Therefore, these shells are all loaded with wood on the outside, and only a dozen can be transported at a time, and they must be kept away from the magic crystal cannon to avoid the vibration from the magic crystal cannon and detonate the shells. In fact, if it weren't for the urgency of the battle, the dwarves would not have been able to make such unsafe shells, because they were not only difficult to transport, but also had problems with storage for a long time. If the interval between the production and firing of each cannonball is more than three days, there may be a problem of strictness, and after 7 days, the dwarves will basically choose to throw the cannonball outside to avoid it exploding themselves.

The unstable compounds were the basic raw materials for the dwarves to produce these shells, and the sulfur produced in the magma of the underworld was combined with the magic crystal powder to make the chemical raw materials. It can be said that this unstable compound has made the eyes of some players light up, because they seem to see the possibility of modern artillery, but the system is very apt to tell players not to be stupid. Although the unstable compound gives players the possibility to make firearms other than the black firearms, the unique environment in the game makes it difficult for these items to be stabilized, and if they are indeed stabilized, then it is almost impossible to detonate. If these things are still unstable. Then carrying becomes a very strict problem, and if the firearm explodes when touched during transportation, it loses a large part of its usefulness, unless players are willing to improvise zuò ammunition before each battle.

However, for the dwarves, this newly created unstable compound has greatly alleviated the original gap in magic crystal explosives, although the dwarves do not lack magic crystal ore, but with the passage of battle, a large number of magic crystal explosives have been used, even if there are more magic crystal ores, they can't withstand consumption. The most important thing is that the dwarves have always practiced rational exploitation. You don't go crazy to dig for magic crystal ore, so the amount of ore stored in the city is very limited. The most important thing was that Santa Mura's forgiveness had destroyed most of the dwarves' magic crystal mines, and now only one or two small pits were left to provide the dwarves with magic crystal ore.

In such a situation, the dwarves had to develop this unstable compound to make this kind of cannonball, which in the eyes of the dwarves might kill their own people, and for the dwarves, this kind of magic crystal cannon cannonball shell has been separated from the concept of magic crystal cannon. They don't use magic crystal explosives as their shots, but those unstable compounds as their shots. As for why it is not used to make explosives, the reason is simple: the dwarves have not yet been able to control the power of the explosion of these unstable compounds, and they can at most control the explosive power of these shells to prevent them from exploding in the barrel. But how far they will fly after shooting out, sometimes the dwarves can't control it.

Even if the same amount of unstable dìng compounds are not the same because they are exposed to the air for different times or when they are exposed to the magic crystal powder, the power is different. But over time, the dwarves quickly mastered the power of this new compound, and at least they were able to roughly control the distance of the cannonballs. There will not be such a thing as a shell being stuffed into it and firing it at a distance of tens of meters from the predetermined position, and at most it will be offset by one or two meters.

Unfortunately, the advent of this new type of projectile could not change the current situation of the dwarves, even if the dwarves behind the wall continued to make it almost possible to open the cannon compartment and pop out the shells as soon as the cannonballs were fired. The whole process of reloading the new cannonballs was as smooth as flowing water, and even increased the rate of the cannonballs to a terrifying rate of seven to eight per minute, but the undead still approached the city wall with firm steps.

When the first undead appeared under the walls, Loren? The copper ingots already knew that the countdown to the third wall had been breached. Jean Loren? What the copper ingot didn't expect was that the undead did not climb the wall directly, but chose another way for the dwarves to suffer losses. The undead who rushed to the front raised the white bone shield in his hand and slammed it against the broken magic crystal cannon on the city wall, and Loren's eyes suddenly shrank when he saw this.

"Nope! Don't fire!! "Loren? The sound of copper ingots was transmitted from the city walls. But most of the dwarves didn't understand why their commander was shouting like that, and the habitual action was not something Loren's roar muffled by the sound of artillery bombardment could stop it.

"Boom!" Instead of following the intended trajectory of the narrow hole in the wall, a cannonball exploded after hitting a white bone shield that was blocking the hole. The fragments from the explosion flew all over the entire firing port, and even shot backwards from the firing port onto the barrel of the magic crystal cannon. There was even a shard that bounced into a dwarven gunner's eye after a few bounces of the bell, causing him to lose an eye.

If it was just an accident, then forget it, but the continuous muffled sound of the city walls and the fragments of cannonballs flying backwards told the dwarves that it was not an accident. Rather, the undead really used this unexpected method to block the dwarven attack.

"Retreat! Drop all the crystal cannons! Fall back! "Loren? The copper ingot is very decisive, and now it is unrealistic to want to transfer the magic crystal cannon away in this situation, and at the same time, those barrels that have been ejected by the shrapnel of the cannonball may not be able to be used several times, rather than wasting time and running with the magic crystal cannon, it is better to drop the cannon and retreat. For the dwarves, the most important thing for them is the clan, not the magic crystal cannon, a weapon that can be made as long as there are materials.

However, the dwarves did one thing when they retreated, and that was to drop all the shells on the ground to prevent the undead from climbing into the wall. As long as those undead step on these cannonballs, let the cannonballs roll. Eventually, a series of explosions will occur.

"Garbage crawling out of the grave! I will definitely be back! "Loren? The copper ingot watched angrily as the undead slowly climbed up the wall, and then followed the other dwarves behind the fourth wall, less than thirty meters away. By the time the last dwarf entered, hundreds of undead had climbed the wall and charged towards the fourth wall with their weapons, and the undead had finally lived up to the dwarves' hopes and touched the shells. Then the rolling cannonball fell from the platform more than two meters high, smashed on the incomparably hard rock and exploded, and the force of the explosion detonated more than 200 shells stored around at the same time. The copper ingot couldn't help but close his eyes.

At the same time, Samoru also saw the third wall completely collapse, but this collapse was not what he hoped for, because the collapsed wall also caused him to lose hundreds of elite undead. Look at the undead who were blown away. Samora's hand holding the flaming greatsword trembled,

"Damn the black dwarves! Damn dwarf! Damn, these stupid undead!! Samora roared angrily, but these roars could not change his situation. Although he broke through the third wall of the dwarves, he did not kill or injure many of them. Not far away, the fourth wall, which was being arranged, appeared in front of Samoru like a dwarf face with a mocking smile. As if he was laughing at him, it made the demon lord feel like the three corpses were jumping.

"Go on the offensive! You idiots bones! Kill all the dwarves for me! "Originally, Samoru was a little complacent about the idea of blocking the dwarves' magic crystal cannon with a white bone shield, but now it's all gone, and it's all anger at the dwarves and the undead trooping forces. If the undead can climb faster, they will be able to catch the dwarves as they flee into the fourth wall, and if they are smarter, they will show the third wall to sniff the explosion to avoid loss. Unfortunately, there was no if, and Samoru was still blocked out of the wall, and could only watch the dwarves roar on the wall.