January 13, 2045, at five o'clock in the morning.

In a black hole caused by planetary debris outside the villa area of ​​Zhennan City.

At this moment, an unmanned reconnaissance aircraft suddenly flew out of it, with extremely fast speed. Following behind were three unmanned fighters!

Then, the four little guys did not leave quickly, but paused not far away, and then looked back at the black hole.

At the same time, Chen Nuo in the shelter stared at the computer screen.

Just now, he saw four drones about to fly out of the black hole, but the monster birds still did not stop, so he couldn't help but feel that his actions might lead these monsters out in advance.

So, at this moment, he felt a little nervous...

After all, if it is really drawn out, the world will be in chaos ahead of schedule.

By then, I will become the culprit.

However, what surprised him was that there was no movement in the black hole?

Seeing this, he was stunned.

What's going on?!

You should know that when they were just five hundred meters away from the exit, the strange birds were still chasing them...

How now...

He was a little confused.

Subconsciously, he controlled the drone to fly towards the black hole, trying to find out.

However, when the drone projected the dark black hole below onto the computer, Chen Nuo was silent.

this…

At this time, the black hole seemed to have returned to its previous calm, and there was no shadow of those strange birds at all.

This made Chen Nuo stunned, but after a moment of analysis, he felt relieved.

I think these strange birds cannot come out of the black hole for some reason.

But, what is the reason?

Of course, when he was confused, Chen Nuo couldn't help but breathe a sigh of relief.

After all, just now, he felt that he almost drew these monsters out in advance.

So, he couldn't help but breathe a sigh of relief at this moment.

At the same time, after this experience, Chen Nuo also gained a certain understanding of these monsters.

The monsters currently known include monster wolf and monster bird. They are very large in size and have strong speed and attack power.

This can be seen through the video of the reconnaissance plane.

As for the strange wolves, I have never fought with them, and I still don’t know the strength of these strange wolves.

But the only thing that makes Chen Nuo happy is that bullets can kill these monsters!

However, those strange birds are extremely fast and numerous.

As for their attack power, it is speculated that it is very strong, but it is difficult to guess accurately.

However, after the fierce battle just now, he gained nearly 300 upgrade points!

In addition to the upgrade points given by the system in the past few days, he now has a total of 875 upgrades!

In other words, he can upgrade his shelter level!

This is undoubtedly good news for him!

Thinking of this, Chen Nuo hurriedly ordered the system after issuing the order to reclaim the drone and fighter aircraft:

"System, improve the shelter level and choose to expand the shelter area!"

"Ding, you consume 800 points to upgrade the shelter, and the area of ​​the shelter has been increased from 200 square meters to 400 square meters! The thickness of the armored door has been increased from 25 cm to 30 cm! The thickness of the wall has been increased from 25 cm to 30 cm!"

"Host: Chen Nuo!"

"Sanctuary level: Level 6! (1,600 upgrade points are required for upgrades!)"

"Sanctuary equipment: Level 6 armored door, Level 1 water source station, Level 2 power station, Level 5 scientific research base, Level 2 automatic lift!"

"Remaining upgrade points: 75 points!"

"Ding, the shelter level has been upgraded to level 6, and the mall immortal cultivation class has successfully loaded the formation class!"

After Chen Nuo ordered, the system's prompt sound and the shelter attributes appeared.

Among them, what surprised Chen Nuo was that the formation class among the shopping mall’s immortal cultivation category was actually opened!

"System, open the mall." Chen Nuo immediately ordered.

After learning the knowledge of cultivating immortals, he learned that formations are divided into: trapping formations, killing formations, defensive formations and auxiliary formations!

The trapping formation is to confuse the enemy and trap the enemy.

Killing the formation master is a killing formation. Anyone who enters it will be difficult to get out of it!

Defensive formations are used for defense, and powerful defensive formations are not even afraid of any attacks!

There are two types of auxiliary formation rules: one is to increase the user's strength, and the other is to assist the cultivators to gather spiritual power in nature to help the user practice!

...

"It seems that I missed the formation." After reviewing the knowledge in my mind, Chen Nuo couldn't help but raise his lips.

Indeed, he had relied too much on the technology of scientific research bases before, so he missed the formations in the cultivation of immortals.

You should know that the killing formation in the formation has very strong lethality, and it is a very powerful weapon to kill nuclear beasts.

In addition, trapping formation is no worse than killing formation.

Therefore, Chen Nuo came to his senses at this time and laughed at himself.

Thinking of this, he directly clicked on the formation category among the immortal cultivation category.

Immediately afterwards, there are four categories under the formation category: killing formation, trapping formation, defensive formation, and auxiliary formation!

In response to this, Chen Nuo directly clicked on the killing formation.

...

White Tiger Killing Formation: There is a phantom of the white tiger inside, which can kill the formation steppers with lower strength than the foundation building realm! One hundred upgrade points are required to purchase!

Qinglong Killing Formation: There is endless lightning, a kind of lightning that is comparable to the foundation-building realm of tribulation! One hundred upgrade points are required to purchase!

Vermilion Bird Killing Formation: There is endless spark inside it, which can start a prairie fire. If you step on the formation, you will either die or be injured! One hundred upgrade points are required to purchase!

Xuanwu Killing Formation: The person who stepped on the formation will flood the water! One hundred upgrade points are required to purchase!

Four Elephant Formation: The formation of four divine beasts, if you step in, you will definitely die under the golden elixir! One thousand upgrade points are required to purchase!

God-killing Formation: God-killing! The purchase requires 100,000 upgrade points!

Evil Ghost Formation: Endless evil ghosts, whenever they step in, their corpses will remain! Ten thousand upgrade points are required to purchase!

...

While browsing these formations, Chen Nuo's heart was moved, and the corners of his mouth twitched.

"It costs at least 100 points..." While pondering, Chen Nuo clicked on the other three types of formations.

However, after browsing, Chen Nuo couldn't help but twitch the corners of his mouth.

Too expensive...

Even though I am very moved, with the current capital, I can't afford it at all.

After thinking about it, he had to give up.

However, he understood the power of the formation very well, so naturally he could not give up like this.

"It seems that you can only rely on drones to hunt down nuclear beasts." After sighing, Chen Nuo went out to retrieve the four little guys.

Although judging from the current situation, drone fighters are enough to hunt down those nuclear beasts, their lethality is not very good.

The formation is different. If you set up a killing formation and put another person in as bait, you can hunt many nuclear beasts at one time.

In this way, isn't the damage power of an unmanned fighter?

Moreover, this can also reap the benefits of the fisherman.
Chapter completed!