Abyss invasion? As a demon cultivator, I laughed.

"No."

Almost as soon as Aurora asked the question, Chu Xiu gave his answer.

"Huh?" Aurora didn't seem to expect Chu Xiu to answer so quickly.

"If a blood demon sneaks in disguised as an ordinary person, I will definitely find out." Chu Xiu said.

“That’s not what I meant.”

"There's nothing unusual about the people here."

Aurora was interrupted by Chu Xiu before she finished speaking. He looked at the blonde girl in front of him and said calmly, "Let's hurry up and refine as many weapons as possible before the Blood Demon launches the decisive battle."

"ah"

Aurora was a little disappointed, but she nodded and said, "Okay."

However, although she was a little disappointed, Chu Xiu's answer seemed to make her stop thinking about it. Maybe she felt that since even Chu Xiu couldn't find anything unusual, she must be overthinking it.

Next, the two of them devoted themselves to the refining of the electromagnetic cannon. It took them a day and a half to refine all the electromagnetic cannons with the raw materials prepared in advance, a total of eighty-seven.

After that, Chu Xiu spent another day to refine more than 200 high-pressure flamethrower heavy artillery. With his superb skills, these heavy artillery can spray flames up to a maximum of 300 meters. When handed over to the awakened ones for use, they can be used as a good short-range air defense method.

At the same time, fifty of them serve as automatic turrets, blocking the road leading to the Titan machine from the base. Any enemy passing by will be burned by the fire of hell.

Now, the large amount of fuel that Chu Xiu brought back came in handy.

He spent another half a day roughly strengthening the thousands of remaining cannons of the Titan Machine one by one, further improving its durability and increasing its regular firing rate by at least 30%.

This round of endless refining made Chu Xiu very tired, but it also led to a qualitative improvement in the firepower of the Titan machine.

The factory also worked at full capacity, urgently producing a large number of metal shells, enough to meet the needs of the electromagnetic cannon.

"With this newly enhanced war machine, I think it shouldn't be a problem to withstand the attack for one to two hours."

"Especially when alien civilizations do not allow subjective actions against the spark of civilization."

"The only question now is whether the enemy will take the bait."

Chu Xiu let out a long breath and looked into the distance. The sun was slowly rising.

After three days of refining, this is already the fourth day of the trial.

Over the past few days, the Blood Demon's army has been attacking continuously, but the sea of ​​blood is still far from arriving. Just as Chu Xiu guessed, it will take until the last few days for the sea of ​​blood to spread to the vicinity of the base city.

Without the support of the sea of ​​blood, these continuous invasions of low-level creatures were blocked by the blood demon incarnation and the ghost army with almost no losses, which greatly preserved the number of artillery shells in the base.

Of course, the price was that it consumed about 3% of the energy of the Tianlong Golden Pill.

There was no other way around it. Three days of continuous fighting had consumed a huge amount of energy, and Chu Xiu alone was not enough to support it.

Especially when Chu Xiu still needs to retain his strength.

In the battles of the past few days, only two high-level ghost generals of the ghost army fought, and they only played the role of commanding the entire army and reducing losses. The blood demon incarnation also only exerted two-thirds of his strength.

The combination of the two should be able to make the opponent mistakenly judge that he is a [Summoning] profession, so that the opponent is more likely to carry out a decapitation operation on his original body.

"I just don't know when the other side will launch a general attack."

Chu Xiu looked at the seemingly endless army of blood demons surging in from the distance and fell into deep thought.

The number of envoys from alien civilizations who have arrived has reached exactly ten.

This is a very unstable number. Greed, suspicion, exploitation, and all kinds of evil thoughts will arise one after another.

And if tomorrow, five new civilization envoys are added, the reward will be reduced by one third, which will make it hard not to have unnecessary thoughts.

"The next step is to wait patiently." Chu Xiu thought to himself.

At this time, Aurora came to his side: "Mr. Chu."

"Is there anything else?" Chu Xiu asked.

Aurora said, "Mr. Chu, are you tired? I'm sorry to trouble you so much when the battle is imminent."

Chu Xiu said: "No need to say these polite words. We awakened ones have strong spirits. Even if we refine it for a month without sleep, it will not be a big deal. It's just a consumption of energy. We are on the same front. Your Excellency does not need to be polite."

Hearing this, Aurora breathed a sigh of relief and said, "In that case, I have something else I would like to ask for your help, sir."

"Oh?" Chu Xiu was a little surprised, "What else?"

He felt that he had done almost everything he could.

Aurora asked, "Sir, what do you think of the power of the Titan Machine at our base?"

Chu Xiu thought for a moment and said, "The firepower output is not bad, but it is difficult to pose a threat to high-level creatures."

Aurora nodded and said, "Sir, do you think that the current weapons can give full play to the advantages of the Titan Machine?"

Hearing this, Chu Xiu showed a thoughtful look, and after thinking for a while, he said: "Relying on the mountains, we can attack the enemy from a high position, and obtain a longer range. The mountains themselves are also a good barrier. In addition, as you said, letting the mountains bear the recoil, etc., it is indeed more advantageous than ordinary artillery camps."

"But I still say that this is only effective against low-level creatures. It will not be effective against enemies at the general level or above."

"And if I may be frank, your current development of the mountain seems to be only on the surface. The huge space inside the mountain should be the biggest advantage of building fortifications on the mountain."

Chu Xiu's words made Aurora show admiration: "As expected of Mr. Chu, you can see through the essence of the Titan Machine so accurately."

"In fact, the Titan Machine was not designed to be what it is now when it was first built. It is just a helpless move now."

"Mr. Chu, please follow me."

Aurora led Chu Xiu towards the interior of the mountain and soon passed through the ammunition storage room, but Aurora did not stop. Instead, she continued to walk deeper. There was a secret passage here that seemed to have not been passed by for a long time. The two walked along the secret passage and finally reached their destination after opening seven explosion-proof doors in succession.

Chu Xiu showed a look of surprise. In front of him was a huge cylindrical steel tank. The diameter alone was more than ten meters, and the height was like a stick inserted directly into the belly of the mountain. The part exposed outside was more than thirty meters. It was filled with coolant, and there were thousands of pipes as thick as an adult's thigh extending from the steel tank to the surrounding mountains.

Chu Xiu expanded his spiritual sense and was surprised to find that these pipes led to hundreds of empty chambers in every corner of the mountain. These chambers either contained circulating coolant or some strange large machines.

In the center of the steel tank, there is a metal throne with many wires plugged into it.

"This is."

"This is the core weapon conceived when the Titan Machine was first built. It's called [Heavenly Light]."

"When activated, twelve gun barrels will deploy from the top of the mountain. The entire mountain will serve as the weapon's power supply and cooling system, and I will personally control these twelve gun barrels with my mind."

Hearing this, Chu Xiu couldn't help but spread his spiritual sense to carefully examine the huge monster in front of him, and after a while he said, "Laser cannon?"

"Yes," Aurora nodded, "Only weapons that reach the speed of light can effectively fight against those high-level beings."

Aurora's words made Chu Xiu nod in agreement. The biggest problem with technological weapons is [aiming]. The more powerful the weapon, the more difficult it is to aim.

At low levels, there is naturally no need to consider so many things, since no one can avoid them anyway, but when facing high-level creatures, one is completely helpless.

Even the hypersonic missiles of the past needed to rely on a complete radar reconnaissance and aiming system in order to achieve precision guidance, and even this could only be used against large ships that moved slowly.

There are only two ways to deal with high-level creatures. One is the nuclear bomb, which reduces the aiming error by infinitely expanding the damage radius. The other is the laser cannon, which uses the high speed of the laser to ensure that the opponent cannot dodge.

Moreover, the power of laser should not be underestimated. A 10-kilowatt high-energy laser can cut a 3mm steel plate in six seconds.

But laser cannons are not that easy to make.

This is a weapon that integrates multiple cutting-edge technologies. First, it must be able to emit sufficiently strong lasers, and secondly, it must be able to focus these lasers together.

In Chu Xiu's previous life, even the large laser cannons installed on ships could only reach a power of 300 kilowatts at most. They could only be used to destroy some drones and missiles, or interfere with the opponent's reconnaissance system, and were also extremely susceptible to weather effects.

It can be said that it is currently just a research direction and has not yet become a weapon that determines victory or defeat on the battlefield.

"So, how many kilowatts of output power can your [Heavenly Strike Divine Light] reach?" Chu Xiu asked.

Aurora coughed lightly, seeming a little embarrassed: "A gun barrel can only reach an output power of 2000 kilowatts at most, but it won't last long."

After hearing this, Chu Xiu was speechless. He finally understood why this weapon was abandoned. The entire mountain was used for energy and cooling, but in the end, only one barrel had an output of 2,000 kilowatts. And even that was only instantaneous power, which could not last long!

"A 2,000-kilowatt laser can probably burn through a tank in a few seconds."

With this kind of power, even if it could really hit a high-level strongman on the other side, it would probably not hurt much. It would probably take more than ten seconds of focus and burning from the twelve gun barrels to cause a little damage.

Seeing Chu Xiu's speechless expression, Aurora lowered her head in embarrassment and whispered, "If you turn on [Overload], it can be even higher."

The more she spoke, the softer her voice became, until it was almost inaudible.

Chu Xiu smiled: "So you want me to help you strengthen this weapon."

“Yes,” Aurora nodded quickly, as if she was afraid that Chu Xiu would disagree, and added: “Senior, although this equipment is not powerful at present, it has great prospects. This is the final reward I got in the King-level Trial. It is a star-protecting weapon for a technological planet, and its level has even reached [Demi-God]! It is a [Demi-God] of [Mythical] quality!”

“A demigod of mythical quality?” Chu Xiu’s face was full of disbelief. The gap was too big. Besides, how could a demigod item possibly drop from a king-level trial?

Aurora sighed and said, "I only got the outline of the drawings. There are still fifty-four drawings left, so I studied and designed the details myself."

"And this weapon was originally built in extraterrestrial orbit. I placed it in the Titan machine, and there were many places that needed to be adjusted. Finally..."

"This is how it turned out in the end, right?" Chu Xiu said with a smile.

Aurora blushed. "But the principle should be correct. It's just that the strength of the material is not enough. Hmm. The standard output power indicated on the drawing is 2 billion kilowatts. Although my design has been simplified a lot, it can theoretically reach a power of one million kilowatts."

"Besides, even if we don't care about [Heavenly Light], as long as the cooling system here is strengthened, it can greatly increase my [Overload] time, which can be used as a trump card at least."

"I understand." Chu Xiu nodded.

If we can reach a power of one million kilowatts, it would definitely be worth a try.

When Aurora saw Chu Xiu agreed, her blue eyes suddenly lit up.

Next, the two began to strengthen and upgrade [Heavenly Light of Punishment].

Although this piece of equipment is very complicated, Aurora, as its designer, knows it very well. Chu Xiu's super-strong soul also gives him a computing speed comparable to that of a computer, so it didn't take him long to master the general principles.

Then Chu Xiu was somewhat pleasantly surprised to find that this piece of equipment seemed to be really useful!

Aurora built a large number of energy facilities and very sophisticated cooling circulation devices throughout the mountain. She used excellent design and the huge mountain to make up for the lack of materials.

The only thing lacking now is the problem of energy transmission.

The power of the Azure Dragon that the [Four Symbols Yin and Yang Furnace] can bestow includes electrical properties. It is not just a simple function of being able to launch additional electrical attacks nearby. If used properly, it can also be used to enhance the conductivity of materials.

After strengthening the wires connected to the power supply, not only the current intensity that can be transmitted is greatly increased, but also the heat generation is reduced. It can be said that the problems of output and heat dissipation are solved in one fell swoop.

After a day and a half of strengthening, this equipment finally showed its true power.

As refined gasoline burned, tremendous electrical energy was transmitted through hundreds of large generators and hundreds of thousands of integrated wires to the [Heavenly Light]. Aurora sat on the throne, with wires connected to her brain, clearly transmitting all the conditions of this magic weapon to her mind.

After a while, she opened her eyes in surprise.

"Mr. Chu, how on earth did you do it!"

"I can feel that the maximum output power of a single-shot gun barrel can now reach 80,000 kilowatts! It has increased by 40 times!"

The girl's face was full of surprise and disbelief, and her eyes showed deep admiration for Chu Xiu.

The weapon that she had spent more than ten years to build, Chu Xiu made a drastic change to it in just one and a half days. If it hadn't happened in front of her, she would never have believed it.

In fact, if Chu Xiu did not have the abnormal talent of [Perfect Refining], even with the help of the Eight Desolate Nether Fire Array and the Four Symbols Yin-Yang Furnace, it would take him more than half a year to complete the strengthening.

Chu Xiu was also happy that he could complete it in a day and a half.

A single gun has a power of 80,000 kilowatts, so all added together it's 1.2 million kilowatts, which is a little higher than the design limit.

If such a huge amount of energy were to converge and hit, even a king-level creature would be burned through in a short period of time.

Even Chu Xiu himself could not resist for long with just his body.

"As mentioned in the previous explanation, although this trial is just a simulation, it can obtain relics lost in history. If I can obtain this Titan Machine and the Heavenly Light, and bring them back to the Ghoul World and hand them over to the government and Guan Ke for transformation, then the defense of civilization will not be a problem."

Chu Xiu thought to himself, and the smile on his face became even more intense.

The two looked at each other and were full of confidence in the upcoming battle.

Next, the two began to meditate to restore their energy and cultivate their spirits, preparing to face the final decisive battle in the best condition.

The Blood Demon Army did not launch a general attack yesterday, but today, the number of envoys from the alien civilization has increased to fifteen, and the probability that the other side can't help but take action has further increased.

"One [Heroic Spirit] Blood Demon and fifteen powerful civilization envoys, many of whom have been strengthened! Blood Demon has at least dozens, or even hundreds of king-level subordinates! And the other party is just a summoner who is constantly being consumed. I don't believe you can bear it!"

Chu Xiu could feel that the Blood Demon's attacks were becoming more and more fierce, aimed at consuming the power of his summoned creatures. This also showed that the opponent had no intention of surviving to the end, but was planning to launch an attack in advance.

As Chu Xiu expected, just three hours later, a sharp alarm suddenly sounded throughout the base city!

Chu Xiu looked down from the top of the mountain and saw hundreds of millions of blood demons scattered throughout the mountains. They stood in the darkness, staring at the base city with their scarlet bloodthirsty pupils. They were like circles of densely packed light spots, covering all the mountains within sight.

Fifteen powerful auras rose from the air.

The moment of the decisive battle has finally arrived.