After considering the cost, Chu Cheng found that the Wanglong Dragon Flame Cannon could only be set up in large fortresses. The basic formations rely on large energy equipment. The cannon barrels that release magic must be replaced frequently. They are fired about ten to fifteen times, which is basically useless. In this way, the launch cost of the Undead Dragon Flame Cannon is comparable to that of the sixth-level scroll.

The advantage is that the directionality and attack distance are longer and the power is strong enough. The disadvantage is that the scroll can be carried with you, and the undead dragon flame cannon can only be fixed on a huge formation.

Usually, equipment at fixed positions has a cost of only one-fifth to one-tenth of the reel. Even if the technology is not up to standard, it will be at least one-third of the cost of use and will not be higher.

If the cost of using is the same as that of the scroll, it will be the result of continuous improvement of technology and the difficulties that Chu Cheng personally ended.

After calculation, Chu Cheng did not want to give up. The biggest advantage of the Undead Dragon Flame Cannon is that the undead or undead mage above level can be controlled, while the sixth-level scroll can be used at least the fifth-level undead mage.

Let's test it on the Ashes Throne first, and it will be done by leaving Green.

Chu Cheng's target was relocated to the camp in the distance. The speed of the Plague Legion was not slow. It was close to five hundred meters away from the camp and found that the artillery in the camp had no intention of activating. However, the Plague Legion still dared not use dense formations, and it was still scattered in small groups, to ensure that the enemy's artillery fire covers at most one team, that is, forty combat units.

Chu Cheng and Luo Yan stood at a distance of 500 meters from the camp. This distance is usually the limit of the powerful magic crossbow attack. Although the magic crossbow is not as harmful as the crossbow cannon, it is extremely penetrating. Even a legendary person cannot be able to drive armor and wait for others to shoot. Every attack will consume its own magic power.

Some magic crossbow arrows also have special armor-breaking devices, or formations and runes on them, and have the chance to penetrate the mage's magic armor.

In the Daxia area, a Xuanhuang crossbow was designed, and the probability of breaking armor reached three%.

This armor-breaking is not divided into physics or magic. As long as it is special protection and cannot be penetrated by normal attacks, there will be such a chance. Three percent sounds not much, but in the battle formation, a team of 400 people fired a Xuanhuang crossbow at the same time, and that probability is almost 100%.

Not to mention that the upper limit of Xuanhuang Crossbow itself is equipment that can reach the fourth level, which is originally a weapon designed for legends.

The Zero Magic Lord came up to report: "Earl, our small magical crossbow cannon is the smallest model, with a straight range of only 800 meters. If it is shot, it is only 1,200 meters. In addition, there is a formation on the enemy's city wall. All attacks will be weakened too much after crossing the city wall. Our small magical crossbow cannon cannot hit their artillery."

Chu Cheng understood that if he didn't fire the cannon, he would not attack intensively.

The Plague Legion does have formations. A brigade is not afraid of any legendary strikes. There are many plague creatures of legendary level in the brigade. However, magic cannons are not human attacks. The attack frequency is higher than that of human mages and have a greater power. There is no need to consider the situation of exhaustion of magic power.

If you compare manpower with the other party’s artillery, you will definitely suffer the loss.

The other party knows that the artillery attack is not very effective, so they simply don’t attack unless you attack the city.

There are thousands of tactics in the world, and there is no certain rule. If Chu Cheng wants to siege the other party, he must worry about whether the other party has reinforcements, or whether the other party guards the cemetery, there is a deeper space gate. If the other party is delaying time and does not attack, the other party will seize the resources of the remains, and even if he turns back and kills the cemetery, it will lose its meaning.

Chu Cheng thought about it and let the Zero Magic Lord attack tentatively and create some pressure on the opponent first.

Chu Cheng did not get much information from the soul fragments absorbed by the plague creatures, but he also knew that this was an adventurer from the Golden Continent, from a noble force.

That's right. In comparison, the nobles of the Warcraft Continent get along better, and the Golden Continent basically have a nouveau riche. Although it's not very good, one can communicate normally at least, and the other is that naked power comes first.

Since strength comes first, then your strength is good, you should talk with your fists, right?

Because the blood stone at the entrance of the ruins was as big as a mountain, Chu Cheng never thought of negotiating with the other party, and his own information was sent out. The Ashes Throne had been sent over to the Crown of Thorns. Tiancao Cangyuan was in a hurry and brought a full elite legion, plus all the legendary elites he could bring.

The elite plague legion has higher combat power and stronger sustainability, which is much more powerful than the thorn mercenaries outside Chu Cheng.

A large group of plague creatures rushed forward and divided into ten small teams. The formations scattered like modern armies, but there was no cover of chariots and no heavy weapons. The plague angels in the air took out magic muskets and aimed at long-range troops on the top of the city.

When the brigade was approaching three hundred meters, the plague angel opened fire. Instead, the magical crossbows on the back of the huge plague war horse did not move at all.

"Earl, we still lack the troops to attack the city." The Zero Magic Lord pointed at Chu Chengdao in an admonishing tone.

"There are giant ground-digging insects in the desert. After getting the genes, I guess Amacao will design it?"

"I mean the heavy firepower of the mobile phone. Sir, the castle in front of us is not a solid castle, and we can only use our lives to fill the gap in the terrain."

"Originally, the Plague Legion designed for field battles. The siege of the city will be left to the human legion."

"But plague creatures are not afraid of death. Shouldn't they perform such a task?" The Magic Lord was a little confused. They were loyal and fearless, and siege was the most casualty in the battle. It should be handed over to them, but why should they hand it over to the human army?

Chu Cheng thought for a while and said, "It's true now, but in the future, the city will not be reliable. A real military city will become a hedgehog that cannot be gnawed. At that time, it will be an era of competing firepower. What kind of firepower we have now will be meaningless in the future."

The magic lord was immediately convinced that they did not need training, and they could immediately master any new combat method as long as they were implanted.

This is the comparison of advantages between plague creatures and humans, rather than not being afraid of death.

Some humans are not afraid of death, such as those fanatical believers.

Chu Cheng said: "If we had a giant bronze statue, twenty or thirty meters in size, we could hit the city wall with the attack of magic cannons, and with one punch to clear the obstacles, the army behind us could rush over. The technology of the Colossus is a sect like Penglai, and it is not too profound. I will definitely buy it when I go to Qingcheng to buy it, but in the future, can the Colossus block the magic cannons and block the attacks of the sixth and seventh level strong men?"

The Zero Magic Lord said, "Then now?"

"If a tentative attack is useless, I will organize legends and attack the city walls, and you will be able to keep up with the big troops behind you."

"Earl, you can also use the Dragon Flame Skull."

Chu Cheng nodded, and he saw ten small teams covered by enemy firepower, guns, bows and crossbows, and various magics. The attack was repelled, and many soldiers and ants were injured, which damaged their lifespan.

Luo Yan said: "Old rules?"

Chu Cheng asked: "How is your true gang recovering?"

"I have recovered 70%. If I do it again, I won't lose my combat effectiveness. I still bring purple jade paste."

"Wait a little longer. After opening the city wall, the enemy may have relatively powerful individuals and you need to suppress it." Chu Cheng was very cautious. Luo Yan's sword technique that restricts the enemy on a large scale can block space. It has super explosive power or is instantaneous. Of course, the price will not be small.

If you attack once, you will probably consume 60% of her true energy.

She must save at least three-level true gang so that there will be no danger, because after leaving three-level true gang, she can only recover her strength while taking purple jade paste.

The True Gang consumes too much, and it will recover more slowly, and even taking the medicine will not be effective.

On the contrary, Chu Cheng only had fifteen seconds of condensation time, and consumed twenty-percent of the magic pool. He really wanted to attack this camp, and he didn't even need Luo Yan's help. As long as he condensed the Dragon Flame Skull for thirty seconds, the opponent's formation could not be defended. That was the terrifying power of level 2.

Of course it is useless to fight alone. How could a seventh-level powerful man let him condense the Dragon Flame Skull for 30 seconds?

He can be destroyed in one second.

However, in the battle formation, Chu Cheng is the absolute turret mage, which is why he doesn't care about the enemy. Such a camp is not a magic tower or something after all.

Thinking of this, Chu Cheng said, "No need to take action, I will destroy the city wall in front. You are protecting me now, and I will accumulate strength for 30 seconds."

"Is that okay?"

"It's only 60% of the magic pool consumed." Chu Cheng said this, and it hurt a little because he had accumulated energy for 30 seconds, and his Dragon Flame Skull was equivalent to the seventh-level magic.

In the central area of ​​the magic attack, there should be no loot left.

The legendary powerful man can't withstand such an attack.

Luo Yan had two swords in his hand, and a flying sword like a bright moon was also floating in front of him to protect Chu City.

A sixth-level sword cultivator like her is not her opponent, and she is usually tied to more than a dozen legends. If she fights alone, she is also stronger in the sixth-level. During the casting process of Chu Cheng, she is indeed afraid of disturbing others. Although she will not die, her magic power consumption increases and her magic completion rate is basically not enough, which is equivalent to losing an opportunity to attack in vain.

I won’t mention the loss of mental power. For example, if the accumulation of power for 30 seconds is interrupted in the middle, after more than fifteen seconds, the magic power loss is almost 100% of the total amount of the magic pool.

On the top of the city, several legendary mages monitored the battlefield and found that a mage in the distance was preparing for magic. The colors of five snow-white skulls were changing toward dark gold. They all remembered the earth-shaking explosion they heard before.

"He can't be allowed to complete the magic!"
Chapter completed!