For a long time, the Cylinder technology in the universe was greatly helpful to the Earth Federation. It was not until the Earth Federation began to contact other alien civilizations and learned new technologies from those alien civilizations that the Cylinder technology was finally abolished.

The reason why Leo mentioned the technology of the cylinder midbrain to Sylvia was because Leo saw some equipment related to the cylinder midbrain surgery at the mecha maintenance site in the Abyss Defense Zone. He understood that this technology that had been sealed in the museum by the Earth Federation was also because he had almost accepted the transformation of the cylinder midbrain technology.

Although the plan eventually died due to the unexpected death of the invoker, it left a deep impression on Leo, so that he later found relevant information and carefully looked up, and even passed several mid-brain surgeries through simulated learning devices.

"The method is feasible." Leo carefully recalled the content related to the middle brain in the memory, and then added: "Even if this technology succeeds in the end, it will have considerable side effects. The most obvious point is that people who undergo surgery will become less and less human."

"This is a matter in the future. What we will do in the end has nothing to do with us." Sylvia shrugged, turned her head and looked at the conference room, and said, "You should have heard our conversation. Now there is a way to understand the power of the abyss on Commander Tyrell to prevent the abyss, but it will cause the body of Commander Tyrell to be completely paralyzed. However, we also have a technology called the mid-brain of the tank, which can change Commander Tyrell's head into a container and then change his body again. Do you think it is feasible and do you want us to help?"

Hearing Sylvia's words, a sergeant asked in a deep voice: "Will this midbrain technology have any impact on Sergeant Tyrell's combat effectiveness?"

Sylvia turned to look at Leo. Leo stood up and replied: "There will be an impact, but it may be a good impact, or a bad impact, because it depends on whether the parts retained by Lancie City are complete and whether the model is suitable. With enough parts and equipment, Tyrel's combat power will not only not weaken, but will become stronger, and even the combat power of the entire mecha legion can become stronger."

Hearing Leo's words, various discussions immediately came from the conference room. After a while, another bachelor asked, "Can we learn the technology of the middle-brain in the tank?"

Leo replied calmly: "I need an assistant. You can send someone to help. Whether you can learn it depends on yourself."

Leo's words caused discussion in the conference room again. Then the speaker of the conference room knocked on the table a few times, signaled everyone to stop talking, and then said to Leo: "We need to discuss it before we can make a decision on this matter. After the result is achieved, we will ask Pope Alice to inform you. In addition, we will not let you do anything in vain. As long as you can save Sergeant Tyrell, we will definitely pay you a satisfying reward."

Leo did not show too much happiness, but just nodded in agreement with the other party's words.

After that, the image connection on both sides was cut off, and images of the entrance of the abyss reappeared on the screen of the observation deck.

However, Leo did not have the intention to observe the situation at the entrance of the abyss again, but turned to look at Sylvia and asked, "Why did you suddenly want to use the conversion ceremony on that Tyrel?"

"Of course it's for the soul-devouring ghost in his body." Sylvia explained: "We will capture the soul-devouring ghost through the conversion ritual, and then use your sin fire to refine the original bloodline of the soul-devouring ghost. At that time, I will absorb it and supply the little guy in my stomach, so we don't need to stay here anymore."

"Can the fire of sin refine the bloodlines of the higher races in the abyss?" Leo looked at Sylvia in surprise and said.

"Don't you know?" Sylvia also looked at Leo with some surprise, and then smiled: "It seems that the inheritance of the abyss knowledge you have obtained is not complete, and you don't even know such an important thing. No wonder I have never seen you seriously develop the power of the fire of sin."

Then, Sylvia carefully told Leo what she knew about the fire of sin very carefully.

As Sylvia said, Leo's understanding of the fire of sin is indeed very shallow. He only knows that the fire of sin can burn the power of the abyss, but in fact, the fire of sin can also refine the bloodlines of the higher races in the abyss, create temporary abyss, etc. Even if he inherits the nearly complete memory of the Abyss Demon Dragon, Sylvia, who inherits the memory of the Abyss Demon Dragon, cannot fully describe all the effects and methods of using the fire of sin. After all, the fire of sin has a strong anti-productive effect on any creature in the abyss.

After listening to Sylvia's story, Leo quickly mastered this method. This is not to say that the method is very simple, but this method is very similar to the method Leo himself created to clear the power of the abyss. They are both directly burned with the fire of sin. The only difference is the intensity of the burning.

"The method is not very difficult. Just practice it a few times to fully master it." Leo explained his situation and asked again: "Where is the conversion ceremony?"

"This is simpler, now..." Sylvia was about to explain her thoughts, but before she finished speaking, she stopped, her eyes stared at the image of the entrance to the abyss ahead, and said in surprise: "Look!"

In fact, there was no need for Sylvia to remind her that Leo could have seen something wrong from her expression, and turned his head to look at the image of the abyss entrance projected by the monitor.

I saw that the abyss tides that were originally thought to have calmed out broke out again, and this eruption was almost without any prior signs. The black oil and gas mist at the entrance of the abyss erupted out like a volcanic eruption, which was several times stronger than the previous abyss tides. Just the shock wave caused by the erupted black oil and gas mist impacting the dome, it shocked the entire city of Lanxi.

Moreover, the black oil and gas mist spread at an extraordinary speed, causing all protective measures in the defense zone to spread to the entire defense zone before they could be activated.

Fortunately, the isolation wall composed of the holy words of the gods used for blockade outside the defense area did not need to be activated and could have an effect at any time. When the black oil and gas mist filled with abyss power spread, it would block it back and not allow the abyss to erode and spread to other areas.

However, in the blink of an eye, the Abyss Defense Zone was completely destroyed.

Although this is not the first time that the Abyss Defense Zone has fallen, there have been many times in the past defense censors that abyss forces occupied this area.

But those falls were completely different from the current falls. Those falls only spread to the surroundings. The black oil and gas mist composed of the abyss forces has not occupied the entire area. More importantly, during those falls, the defensive power of Lanxi City still had a strong commander and leader, organizing various resistances, and finally recaptured the defense area.

But now the nominal leader of various churches, Luther, priest, died, and the commander of the Fearless Mecha Legion has also become paralyzed. Although the combat power of each of them is still intact in the fallen defensive zone, it is in a state of headless dragons. It is no exaggeration to say that if there is no correct way to deal with it now, the fall of the abyss defense zone will completely fall.

The abyss tide suddenly broke out, instantly covering the entire abyss defense zone. It was immediately passed on to the management meeting that was still discussing whether to treat Tyrel. Everyone present saw the dark image on the monitor, and the expression on their faces was extremely ugly. In addition to shock, they were more afraid and panic.

"Immediately, start all the dome artillery fire immediately to attack the ground!" A scholar immediately shouted.

As soon as the bachelor finished speaking, the sergeant sitting next to him grabbed his clothes and said viciously: "Are you crazy? There are also our warriors and church people in it. Are you trying to kill them and clear the way for the monsters in the abyss?"

If it were normal, the sergeant's behavior would definitely be criticized by other bachelors, and even provoked a political battle between bachelors and sergeants. But now everyone's mind is focused on the Abyss Defense Zone, and no one will pay attention to the dirty trivial matters between bachelors and sergeants.

"I want to go down, check the situation, and preside over the battle!" At this time, Alice stood up from her seat and prepared to walk out of the conference room and return to the defense area.

"Wait! You can't go down now." The Speaker of the meeting called Alice, and then explained as Alice looked at him in confusion: "When you enter the defense zone at this time, you must open the door, and the holy words on the door will inevitably be affected. At that time, these abyss forces will definitely penetrate."

Alice frowned and said in a deep voice: "Is there no other way to enter the defense zone?"

"No." The Speaker shook his head and said very seriously: "I now order the implementation of the Seventh Defence Program as the Speaker of the Management Parliament."

"Defense No. 7?" Everyone was stunned after hearing this, and then they soon realized something, all looking at the white-haired Speaker with shock.

The No. 7 defense plan is called the final defense plan in the management of Lanxi City. The method is very simple. It is to use a heavy partition that has been blessed by the gods countless times to completely block the entrances and exits of all abyss defense areas, and then adjust the output power of all the energy cannons in the dome to maximize, and conduct indiscriminate attacks on any object that can move on the ground.

In other words, this is an enhanced version of the previous dispute between the sergeant and the bachelor.

"no!"

"no!"

"Are you crazy?"

"It's not that far!"

For a moment, all the bachelors and sergeants who came to their senses opposed it together. They stared at the Speaker angrily, as if they were looking at the sinner.

"I'm very awake. The decision I made now is the most correct decision." The Speaker's face was also very pale. He said in extreme frustration: "Think about what happened before, and look at the strength of the current wave of abyss tides. It is obvious that these abyss monsters have been preparing for this invasion for a long time, and may have even figured out the details of all the defense systems in the defense zone, so those people in the defense zone are absolutely unable to..."

"Wait!" Alice interrupted the Speaker and said, "Mr. Speaker, I think we should wait a little longer, and someone should be able to save this situation."

"Someone saves the situation?" The Speaker was stunned, as if he had thought of something, and said, "Are you talking about that Mr. Leo Dodd?"

"Yes," Alice nodded, and saw the speaker hesitant, and continued: "Don't forget that even if Leo Dodd cannot stop the invasion of these abyss forces, we still have a weapon that can stop the abyss, which is the weapon left by Leo Dodd not long ago and left by the ancestors of Lancie City."

"Yes! Yes! We have a weapon left by our ancestors." At this time, not only the Speaker, but others also thought of it, so they temporarily stopped implementing the Seventh Plan and started the people on the Prometheus main computer, asking them to immediately adjust the sub-space engine to be activated and ready to launch at any time.

At the same time, in the defense area below, which was completely wrapped in the abyss black oil and thick fog, everyone was caught off guard by this explosion. They were also a little panicked at this time because something similar had never happened, and they didn't know how to deal with it for a while.

But at this moment, the spiritual connection system of the Fearless Mecha Sergeants in all the defense zones was subjected to a series of commands, and each team was different. Among them, the Fearless Mecha Sergeants located in the front-line war zone were ordered to gather together to operate in a defensive array, contact those clergy, family members and mad believers who were also trapped in the thick black oil fog, and set up defensive positions with different observation platforms as the center.

The Fearless Mecha Sergeant in the Fort area also received different instructions to cooperate with the Holy Cult Army of the Victims Church to enter various defensive turrets and open the fort firepower system.

More importantly, along with these clear command orders, there is also a detailed defense zone map in the information sent to their mental connection system, and the location of each friendly force is marked in detail. Even if these black oil and gas mist blocks all the sight, if this map is present, they will be worried that they will hurt friendly forces during attack.

All the Fearless Mecha Sergeants did not know who issued these orders, but the way these orders were issued was at the highest level, even above Commander Tyrell. All the orders were extremely clear and completely targeted at the current situation. Therefore, even if these Fearless Mecha Sergeants did not know the source of the order, they still followed the orders. And as more and more people gathered, the defensive positions had gradually been formed and the people's hearts were stabilized.
Chapter completed!