Global Catastrophe: I Am Cultivating Immortals in the Refuge

After resetting the circuits and rooms in the shelter, Chen Nuo didn't immediately buy a water source station and a power station.

"The first floor should be used as a place for daily life." Looking at the 100-square-meter shelter, Chen Nuo thought to himself.

"Besides, the current double-layer iron gate probably isn't enough to resist the second wave of underground core beasts' attacks, and needs to be strengthened." Thinking of this, Chen Nuo's expression became much uglier.

He has faced such a crisis, so he deeply knows the horror of those underground core beasts.

Therefore, he knew that the current iron gates were not enough to resist them!

"System, I want to upgrade the shelter and choose to build the second floor down!" Thinking of this, he resolutely chose to upgrade the shelter again.

"Ding, it takes 50 upgrade points to upgrade again! Do you want to upgrade?" The system prompt came to mind, which made Chen Nuo's face change.

However, he didn't care too much about doubling the upgrade points.

After all, during the catastrophe, no matter who it is, it is easy to die in it!

So, what's the point of this upgrade?

Survival is the most important thing!

At present, the thickness of the iron gate and the surrounding walls must be increased as soon as possible, otherwise it is absolutely impossible to survive the catastrophe!

"Upgrade!" Thinking of this, Chen Nuo gritted his teeth and directly chose to upgrade!

"Ding, the shelter has been successfully upgraded. The double-layer iron door has been upgraded to a steel door with a thickness of ten centimeters, and the thickness of the surrounding walls has been increased to ten centimeters!"

"Host: Chen Nuo!"

"Shelter: Level 2! (Upgradeable!)"

"Refuge Equipment: Steel Door!"

"Remaining upgrade points: 140 points!"

"Ding, because the shelter is built downward, the elevator will be given away for free! Please set the location of the elevator!"

As soon as the voice fell, in just a split second, the system's prompt sound appeared in his ears, and at the same time, there was the attribute panel in front of him.

He glanced at the attribute panel, surprised and sent the elevator to him, and at the same time called up the shelter panel, and began to look for a location for the elevator.

Soon, he chose a place on the template and set it as an elevator.

However, because there is no electricity, the elevator cannot operate.

Chen Nuo, on the other hand, only remembered this question after setting it up.

But fortunately, he remembered that there seemed to be stairs on the shelter template.

"It seems that the use of templates for climbing stairs is here." He couldn't help thinking to himself.

As he spoke, he looked at the template.

At this time, because of the second layer, the template has also changed.

Chen Nuo was only slightly surprised, and then set up a staircase next to the elevator.

Putting away the formwork, Chen Nuo looked at the stairs not far away and nodded.

"Well, let's set up the water source station and the power station on the second floor first." He said, calling out the mall while walking down.

The second floor, like the first floor at the beginning, is extremely empty, and you need to set up rooms and other facilities by yourself.

However, this time, he did not set up rooms and other facilities, but clicked on the mall.

Glancing at the number 140 displayed in the upper right corner, he looked at the water source station and the power station.

Water source and power supply are essential during the catastrophe, but if you are alone, the water source and power supply should not need to be upgraded too high.

Thinking in this way, he directly spent 20 upgrade points to purchase the water source station and the power station.

Considering that the area may increase after the later upgrade, the distance between the two stations is quite far.

"Ding, the purchase of the water source station was successful! Will the system automatically set all the waterways in the shelter?"

"Ding, the purchase of the power station was successful! Will the system automatically set up all the circuits in the shelter?"

After he set up the two supply stations, two notification sounds appeared in his mind.

This made him frown.

With this kind of operation, wouldn't the water circuit I set up earlier be in vain?

Of course, if he is depressed, he still chooses to set it automatically.

And when he made the choice, within ten seconds, the entire second floor of the shelter instantly lit up!

Looking up, the circuits spread methodically on the wall, all the way to the first floor.

Not only that, the system also installed the light tube on it by the way.

This can't help but make Chen Nuo feel: "There's still a lot of money left to buy lamps."

Turning off the flashlight on the phone, Chen Nuo subconsciously glanced at the elevator beside him.

At this moment, the elevator didn't light up, obviously, because the power supply wasn't coming.

After all, the information displayed on the power station is only supplying 10 watts of electricity per hour.

Looking at the remaining 120 upgrade points, Chen Nuo felt that it would be better to upgrade the shelter first.

After all, he was the only one and didn't use a lot of water and electricity.

On the contrary, it is a refuge, the level is low, so the defense of the iron gate is not high, and if the defense is not high, it will definitely not be able to withstand the second wave of attacks from the underground core beasts.

Of course, although the first wave of catastrophe has not yet come, Chen Nuo, who has experienced the catastrophe, still feels that he has to make full preparations in advance.

At least, you have to make yourself feel a little safe in your heart.

After turning off the lights on the second floor, he walked towards the first floor.

At this time, the first floor is naturally brightly lit.

"System, how do you get upgrade points?" When he thought about upgrading the shelter, this question naturally appeared.

"Ding, the system will give the host one hundred upgrade points every day. In addition, if the host kills the monsters during the catastrophe, he can also get corresponding upgrade points!"

The system's answer made Chen Nuo ponder.

"In this case, I want to upgrade the shelter and choose to build the third floor!" Chen Nuo thought for a while and said.

Now, he still has 120 upgrade points left, and at the same time, he needs 100 upgrade points to upgrade the shelter again, so it is naturally impossible for him to waste the upgrade points in other places.

After all, it would be perfect if the shelter had electricity and water.

Although there are not many water and power sources, it is good enough.

"Ding, the upgrade is complete! The steel door has been upgraded to an aluminum alloy door with fingerprint recognition! The thickness is 15 centimeters! The surrounding walls are 15 centimeters thick!"

"The elevator link on the third floor is complete!"

"Host: Chen Nuo."

"Shelter: Level 3! (Upgradeable!)"

"Refuge equipment: aluminum alloy door with fingerprint recognition, water source station, power station!"

"Remaining upgrade points: 20."

With 20 upgrade points left, Chen Nuo couldn't help but frowned when he glanced at the shelter where another upgrade needed 200 upgrade points, and subconsciously looked at the aluminum alloy door.

He didn't know if the door could stop those monsters, but now he couldn't upgrade the shelter again.

So, even if he has the heart, he doesn't have the strength.

"Just in case, it's better to save these 20 points." He wanted to upgrade the hydropower station, but after thinking about it, he decided to save the upgrade points first.

At the very least, upgrade the shelter to another level, so as to appease his fear of catastrophe.