Global Catastrophe: I Am Cultivating Immortals in the Refuge

"System, I choose to buy these four formations!" Chen Nuo didn't think too much, and bought these four formations directly.

After all, he had already decided in the past few days that as long as the upgrade points were enough, he must buy the formation.

You know, the lethality of these formations is hundreds or thousands of times stronger than that of unmanned fighter jets!

"Ding, you spent 400 upgrade points to purchase the White Tiger Killing Formation, Azure Dragon Killing Formation, Suzaku Killing Formation, and Xuanwu Killing Formation!"

"Reminder, you can spend 500 upgrade points again to evolve the four formations into four elephant formations!"

Following the system's notification sound, four discs and 16 small flags suddenly appeared on the table in front of Chen Nuo out of thin air.

The four discs are divided into green, white, red and blue respectively.

They face the opposite array.

And for the sixteen small flags, every four colors correspond to a disc.

These are some materials for the formation.

Now, as long as Chen Nuo inserts these small flags in a certain place, and activates the disc with blood essence and spiritual power, the formation will be activated.

However, what surprised Chen Nuo was the system's notification sound that allowed four formations to merge into a four-element formation.

"That is to say, if I buy these four formations and upgrade them with 500 upgrade points, then I can evolve into a four-element formation?" Chen Nuo couldn't help pondering.

The meaning is very simple, if you buy these four formations and then upgrade, it will be 100 upgrade points cheaper than buying the four-element formation directly.

This is very good.

"However, although the power of the four-element formation is powerful, its range is definitely not larger than these four formations. If it is not necessary, there is no need to upgrade it for the time being."

After murmuring for a while, Chen Nuo began to browse the rules of using the formation.

The way to cast the formation is very simple. You need to insert the flag in the place you designate, and then drop the caster's blood essence into the core of the formation (that is, the disk) within the range of the flag, and then inject spiritual power to make the formation It works!

The method of use is very simple, but the only thing that makes Chen Nuo feel bitter is that the formation requires the caster to use the disk to activate the formation.

That is to say, if Chen Nuo wants to set up a formation, then Chen Nuo must go out for a trip!

In this way, it also disrupted his original idea of ​​using unmanned reconnaissance aircraft to arrange formations.

This made him frown.

If I knew this earlier, I should have learned how to use the formation earlier...

He couldn't help feeling in his heart.

However, although he was emotional, he didn't think about it any more after thinking about it.

After all, he was busy upgrading the shelter, scientific research base and cultivation before, so how could he think so much?

"It seems that I have to go out." While pondering, he began to make some preparations.

For example, how to attract those earth core beasts.

After all, it is impossible for him to go to a place with many earth core beasts when he goes out this time.

Therefore, after setting up the formation, he must have something to introduce those earth core beasts.

Although he had thought about tempting these earth core beasts with living people before, but in the current situation, can those earth core beasts keep themselves alive?

So, he began to browse the video playback of the previous unmanned reconnaissance drone, looking for a way.

Fortunately, after playing back the video, he quickly found a way.

Because after last night's devastation, the government began to have loudspeakers across the country broadcast recordings of survivors entering shelters in cities.

It was for this reason that Chen Nuo happened to discover in the video that these geocore beasts would get angry at the sound of the speakers and attack those speakers.

It was this discovery that gave Chen Nuo an idea.

It's just that when this idea appeared, it also made Chen Nuo instantly troubled.

That is, because of the rampant destruction of the Earth Core Beast,

Caused many lines to be destroyed, if the speaker is used, it is naturally impossible to operate without power maintenance.

This made Chen Nuo frown.

"I don't know if the scientific research base can produce speakers that don't need electricity and can be played for a long time." While pondering in his heart, he had already arrived at the scientific research base.

"Scientific research, with your current technology, can you produce a speaker that does not require electricity to maintain and can still play recordings?"

Chen Nuo went straight to the point without dragging his feet.

Soon, almost without stopping, a light curtain appeared on the center console, followed by the voice of scientific research:

"Yes, this solar horn can be made with only 0.1 jin of copper and 1 jin of iron! It doesn't need to be connected to the circuit to operate, as long as it is illuminated by the sun, it can be used!"

Hearing this, Chen Nuo glanced at the horn model on the light curtain.

There is almost no difference between this speaker and ordinary speakers, except that there is a small piece of solar energy conversion power conversion device on the host of the speaker.

Seeing this, Chen Nuo couldn't help smiling.

There are very few materials needed, and I just need them now, not bad.

After thinking about it, Chen Nuodang even ordered:

"Make me four of these horns...by the way, make me one more ball pistol and the ammunition for the ball pistol!"

After all, with the operation of the robotic arm, Chen Nuo couldn't help asking: "How long will it take to make what I need?"

"Two hours!" The scientific answer was quick and accurate.

Chen Nuo nodded, and then began to think about what he needed after going out.

There are firearms and horns. Except for weapons and protective clothing, everything else is basically prepared.

"Research, call out the weapons and protective clothing you can make." Thinking of this, Chen Nuo said.

On the center console, the light curtain reappeared.

Nano Light Knife: The handle is made of iron, and the blade body is made of nanoparticles, which is a hundred times stronger than ordinary knives and extremely sharp! It needs 5 catties of iron and ten energy spars to make!

Mechanical glove: A glove that can greatly increase the power of the user's fist. Its attack power can even easily destroy a wall with a thickness of ten centimeters! It requires 50 catties of iron, five catties of copper, and ten energy spars!

...

Combat suit: suitable for combat, light and practical, and can greatly improve the user's sensitivity after wearing it! It needs 5 catties of silk and one energy spar to make!

Body armor: It can withstand a shot from a shotgun. It needs 10 catties of silk and a catty of iron to make!

Mecha suit: Made of steel, it can easily withstand the bullets of any firearms. The only weakness is that it is bulky! It requires fifty catties of iron, one catty of copper, and one energy spar!

...

Looking at these items, Chen Nuo finally chose to make a battle suit and a light knife and mechanical fist.

The battle suit is to improve one's agility and is used to escape, while the light knife is because one can control swordsmanship.

As for the mechanical glove, the power of this glove surprised Chen Nuo, so he chose to make one.