This armor is completely composed of countless three-meter-long steel plates, and they are tightly connected together with thick iron chains, each steel plate is a foot thick, and it is covered with sharp steel thorns half a meter long, such thickness, coupled with that terrifying attack, can easily withstand the attack of ordinary warriors.

The entire Kasa Fortress is a hundred miles long, and this steel plate armor naturally cannot completely cover it, and even reach one hundredth, which can only protect the width of hundreds of meters on both sides of the fortress's city gates, but this is enough.

The strength of the corpse slaves controlled by the Netherworld Temple is not strong, so they can only win by numbers, so the Netherworld Temple will definitely not divide the corpse slaves, and can only use one place as a breakthrough point, this city gate is undoubtedly the best choice, so even if it is covered with steel plate armor, they will not give up.

Looking at the huge layer of steel plate armor hanging on the city wall, Zhu Yuyan on the side was also amazed by the solidity of the Kasa Fortress city wall, so many three-meter-long, half-foot-thick steel plates were put down from the city wall, the weight of the city wall alone was very terrifying, and the Kasa Fortress city wall could easily bear such a heavy object, which shows that the Casa Fortress city wall is the largest and strongest rumor in the entire Yaoyue Empire is indeed true.

However, Zhu Yuyan didn't care too much, even in the strong city wall, facing a powerful opponent at all, it was still like a fictitious, of course, it was enough to guard against the corpse slaves controlled by the Netherworld Temple.

"The high-grade magic core cannon is starting to charge!" Wu Jingyi's command echoed far away on the city wall.

When he heard Wu Jingyi's words, Zhu Yuyan, who was standing beside Qin Siwei, couldn't help but show a look of surprise in his eyes, and said: "I didn't expect the Yaoyue Empire to be so well prepared, and it was even equipped with a high-grade demon core cannon, hehe, it is worthy of being one of the top ten empires on the mainland, and it is really rich, the range of the high-grade magic core cannon can reach twenty kilometers away, and the power is much stronger than the primary demon core cannon, which is enough to attack those corpse slaves in front." ”

In the past two years, Zhu Yuyan has carefully studied the culture on this continent, and even the origin or formation time of the continent, so he is very familiar with everything on the continent, and this magic core cannon is naturally very familiar.

As soon as Wu Jingyi's words fell, some soldiers on the city wall immediately began to get busy, and the charging of the magic core cannon was completely replaced by the magic core, and they sucked all the energy of the magic core energy into the magic crystal cannon through a special device, and then launched this energy at one time.

On the Tianwu Continent, the Demon Core Cannon is divided into three levels, which are primary, intermediate, and advanced. The primary magic crystal cannon is generally replaced by a first- and second-order magic core, and the number of magic cores used is also different according to the power of the projectile, while the intermediate magic crystal cannon is charged with a third-order and fourth-order magic core, and as for the high-level magic crystal cannon, it needs a fifth-order magic core to charge.

The maximum firing range of the primary magic core cannon is three kilometers, the maximum firing range of the intermediate demon core cannon is eight kilometers, and the firing range of the advanced demon core cannon reaches a terrifying range of more than twenty kilometers.

As the most powerful offensive and defensive weapon, the existence of the magic core cannon is undoubtedly welcomed by all the large and small countries in the entire Tianwu Continent, among which the primary and intermediate demon core cannons are relatively common, and they are equipped in all important cities, while the high-grade magic crystal cannons are very rare, and they are generally only equipped in the border fortresses of every large empire, and there are not many of them.

After all, using a fifth-order magic core to charge it, and it is still a one-time launch, this mean requirement alone is not something that ordinary countries can afford, so unless it is a last resort, no country dares to use high-grade magic core cannons at will.

Because, every time a high-grade magic core cannon is fired, it represents a lot of money.

The value of a fifth-order demon core can be imagined to be equivalent to that of a battle mad powerhouse, but unfortunately, this is only a one-time thing.

With the charging of the high-level magic core cannon, an extremely large and very unstable violent energy came from the location of the magic core cannon, giving people the feeling that this energy seemed to be about to explode at any time, if you don't have a certain amount of courage, I'm afraid you won't dare to approach the charging demon core cannon at all.

A fifth-order demon core is equivalent to the dantian of a battle mad powerhouse, you can imagine what it would be like for a war mad to reveal himself, such a power is enough to severely damage or even kill a war king.

In fact, on the Tianwu Continent, there have also been many cases where the energy of the Demon Core Cannon has gone out of control and exploded beyond the limit that the Demon Core Cannon can withstand in the process of charging, but the super attack power of the Demon Crystal Cannon still makes all countries prefer to take this risk to use it.

Moreover, as long as it is properly controlled, such a situation can almost be avoided, especially for high-level demon core cannons, which can be said to be almost free of any danger. Because a fifth-order magic core is sometimes not enough to fill, as long as it is filled with a magic core, it will stop, and it will not exceed the withstand of the magic core cannon.

After about a dozen breaths, the charging of the high-grade magic core cannon was finally completed, and with Wu Jingyi's order, the thirty demon core cannons installed on the city wall opened fire at the same time.

"Bang!"

With a dull loud noise, I saw thirty extremely large energy clusters shoot out from the muzzle of the demon core cannon, flying more than ten kilometers in the air at an extremely fast speed, and finally slammed into the dense place of the group of corpse slaves at seven kilometers.

"Boom!"

With a loud earth-shattering sound, the position bombarded by the demon core cannon suddenly became filled with smoke and dust, and a strong and tyrannical energy fluctuation erupted, instantly annihilating all living beings within fifty meters, only to see a large number of corpse slave limbs that had been shattered and exploded into the sky, splashing in all directions.

The power of the high-level magic core cannon can instantly turn the battle mad strong into a stump, even if the war king is strong under the bombardment of the high-level magic core cannon, if it is directly hit, even if it is as strong as the war king, it will be instantly blown into a pile of minced meat, I'm afraid, only the powerful war emperor can ignore the power of the high-level magic core cannon.

Thirty high-grade demon core cannons fired in unison, taking away thousands of corpse slaves and threatening them, among whom even more were injured. The sudden change could not make the unconscious corpse slave fearful at all. If it is a life form with intelligence, after seeing the power of the demon core cannon, it is inevitable that there will be fear and panic in the heart, but unfortunately it is facing a corpse slave who has long died and is unconscious.

"The high-grade magic core cannon continues to be charged, and after it is charged, it will be fired at the corpse slave in the rear immediately!" Wu Jingyi commanded loudly while standing on the city wall.

"Attack!"

At the same time, there was a whole earth-shattering roar from the rear of the corpse slave again, this time the sound was even louder than the last time, even if it was nearly thirty kilometers away, but in the ears of Qin Xiaotian and the others, there was also a thunderous explosion.

With this roar, the countless corpse slaves also let out ugly screams as if they had received an order, and began to rush towards the walls of the Kasa Fortress.

Tens of millions of corpse slaves ran wildly, and the momentum caused by it was so great that the faces of many people on the city wall became a little pale, even if they stood on the city wall, they could clearly feel the violent shock coming from the entire ground.

"Crossbowmen ready!"

Wu Jingyi ordered with a serious face.

Suddenly, at the corner of the city wall, many square openings about half a foot long suddenly appeared, and the openings were densely packed, and at a glance, there were as many as thousands.

Immediately afterward, a chilling glow of arrows protruded from the hole, the tips of which were made entirely of hard steel, and the body of the arrows was made of ironwood that was as hard as steel.

Each of these arrows contains terrifying power, enough to easily pierce through the steel plate a few inches behind, even if it encounters a monster with strong defense, it can also cause great damage, not to mention a corpse slave with lower strength and no intelligence.

When tens of millions of corpse slaves approached Wacker City five kilometers, Wu Jingyi ordered again: "Primary, intermediate demon core cannons are fired freely, give me a hard beat." ”

"Bang!", "Bang!", "Bang!", "Bang!", .........

With a series of dense and dull cannon sounds, dozens of demon core cannons on the city wall were fired at the same time, only to see a large area of energy containing strong energy fluctuations cut through the sky, falling on the densest place of the corpse slaves and exploding, and the smoke and dust suddenly drowned out a large trace of corpse slaves.

After a few breaths, the primary and intermediate magic crystal cannons were recharged again, and with a dull sound, I saw that another strong energy fell on the corpse slave group and exploded, and several corpse slaves were blown up far away, mixed with a little carrion and some corpse slaves' stumps and broken arms.

After several rounds of bombardment, the group of corpse slaves was only five thousand meters away from the walls of the Kasa Fortress after paying millions of losses.

"Stop the shelling, the crossbowmen are ready in place!" Jiang Wu shouted loudly, if the magic core cannon is used now, it will easily affect the solidity of the Casa Fortress. Gradually, the group of corpse slaves got closer and closer, but after a dozen breaths, some corpse slaves had already appeared less than three hundred meters away from the Kasa Fortress, which happened to be the scope of the crossbowmen's attacks.

"The crossbow is free to fire!" Jiang Wuji ordered loudly again.

As soon as Jiang Wuji's words fell, those sharp crossbow arrows that stretched out from the corners of the city wall also turned into silver-white lightning and shot out one after another, and the piercing sound of breaking the air came into his ears, giving people a creepy feeling.

"Bump ......!"

The power contained in these crossbow arrows was so great that when they hit their targets, they exploded instantly, shattering several corpse slaves around them.

Seeing this scene, Qin Siwei couldn't help but have an excited look on his face.

"I didn't expect that the Bright Moon Empire would actually infuse the arrow with energy, no wonder it would have such an effect. Zhu Yuyan smiled slightly, then looked at Qin Siwei who was full of excitement and said, "Things don't end so simply, the victory at the beginning doesn't mean anything, even if you keep winning, but if you lose the last set, you are still a loser, and the final winner is the real winner." ”