Li Chen thought about it and calculated again.

And looked at the number of energy crystal nuclei currently in his possession.

In the end, the idea of ​​redeeming the fifth-generation individual combat electromagnetic energy cannon directly through Noah's mall was dismissed.

too expensive.

Really too expensive too expensive!

Even if I have hundreds of thousands of energy crystal nuclei on hand, I can't afford such a waste.

Just wait a little longer.

Anyway, I have temporarily deployed ten fully automatic rail guns.

Wait until the zombie wave comes.

Let's take a look at the specific power of these fully automatic electromagnetic railguns, if they can easily withstand the attack of zombie waves.

Then Li Chen doesn't need to be too anxious to waste more resources for the time being to strengthen the defense of the star shelter.

Li Chen browsed the information on the operation panel of the weapon production line again.

"To upgrade the production line of portable individual weapons, only need to consume 600 six-level energy crystal nuclei, can the output of the production line be increased by five times?"

Li Chen's eyes lit up when he saw such a description.

Of course, he also thought of it before, and he could upgrade the weapon production line.

But considering the practicality, I didn't care too much.

Li Chen suddenly became happy when he saw the prompt on the control panel by chance.

"upgrade!"

"Noah! Upgrade this production line for me immediately!"

Li Chen gave the order without hesitation in his mind.

[Received, we are upgrading the portable individual weapon production line for you! 】

[600 sixth-order energy crystal nuclei have been automatically deducted, and the upgrade operation is in progress. Please do not perform any production operations on the production line, please wait...]

【update successed! The current production line of portable individual weapons has been upgraded to Lv2, and the single-day output of third-generation/fourth-generation/fifth-generation weapons has been increased to 2500, 500, and 100 respectively! 】

Noah's prompt sounded.

Li Chen hurriedly summoned the control panel of the production line again.

"Upgrading the production line from level 2 to the next level requires consumption of 6,000 sixth-level energy crystal nuclei, and the output can be increased by 7 times!"

"this…"

Li Chen felt that such an algorithm was a bit tricky.

The energy crystal nucleus consumed by upgrading the 2 production line is ten times that of level 1, but the output speed is only increased by 7 times.

However, he still didn't hesitate at all, and directly chose to upgrade again.

Just increase the level of the individual weapon production line to level 3.

Then the production of the fifth-generation portable individual electromagnetic energy cannon can produce 700 pieces per hour.

24 hours a day non-stop production.

The number is enough to arm an entire division of fighters.

Next, if you only need to upgrade and strengthen the powered exoskeleton, then the strength of this division.

That should be enough for most cases.

[Does the host confirm that it consumes 6000 energy crystal nuclei to raise the level of the portable individual weapon production line to Lv3? 】

Noah's voice sounded in his mind.

[After the output is increased, your hourly consumption of the host will also increase accordingly. 】

[Once the upgrade operation is confirmed, you will not be able to withdraw the order, please make a careful choice. 】

It reminded again.

Hearing these words, Li Chen was slightly taken aback.

"Forget about that!"

He calculated silently in his heart.

According to the output of the previous level 1 individual weapon production line, only 20 of the fifth-generation individual electromagnetic energy guns can be produced per hour.

A total of three sixth-order energy crystal nuclei will be consumed.

After upgrading to level 2, the output will increase by five times, and the consumption will of course also increase by five times.

In other words, 15 sixth-order energy crystal nuclei need to be consumed in one hour.

Now, if the production line is upgraded to level 3, the output will increase by 7 times.

Then the sixth-order energy crystal nuclei consumed per hour will become 105.

At first glance, that number might not seem particularly high either.

After all, Li Chen now has more than 200,000 sixth-order energy crystal nuclei.

But if you calculate carefully, you will know that this consumption is actually quite large.

105 sixth-order energy crystal nuclei per hour.

It costs 2,520 pieces to run a weapon production line 24 hours a day.

Opening it for ten consecutive days will consume more than 25,000 sixth-order energy crystal nuclei.

If only by myself.

Then Li Chen can produce and consume unscrupulously.

But now the capacity of the star shelter is getting bigger and bigger, and there are more and more residents.

He is the spiritual leader and soul figure of the entire refuge.

It must be considered for everyone.

Every resource is aimed at maximizing the benefits and must not be wasted easily!

"Noah, the next wave of corpse attacks will definitely have double crystal nucleus rewards, right?"

Li Chen thought of something and asked immediately.

[Answer the host, as long as you lead your subordinates to successfully resist the attack of the corpse tide, you will get double rewards every time! 】

[It is even possible to get triple rewards! 】

[In addition, Noah will also give you super gift packages from time to time, please grow up with peace of mind and don't need to worry too much! 】

Although Noah's voice sounded, it was still so cold.

It's like a robot with no emotion at all.

But it made such an answer that Li Chen felt very comfortable listening to it.

Is this the product of a level 3 cosmic civilization, the energy it possesses?

Really super invincible and powerful!

"I can rest assured that!"

"Then Noah, let's upgrade the individual weapon production line!"

"By the way, let's upgrade the production line of the powered exoskeleton!"

With Noah's promise and guarantee, Li Chen began to act unscrupulously.

After all, everything I have today was given by Noah.

If you don't believe it, who else can you trust?

[Host, please wait a moment, the upgrade operation is in progress for you...]

Noah immediately began to upgrade the production line according to the instructions.

…

the other side.

"Buy supplies?"

"You don't even look at what's going on now, go, go, please go back!"

"We don't sell supplies here now!"

A guard soldier from Star Vault behind barbed wire.

Looking outside at Zhao Cheng and the convoy behind him, he shook his head and waved his hands impatiently.

The request made by the other party was directly rejected.

"What's going on? You obviously still have a lot of supplies in your star shelter, I've seen it all!"

"Sell us a little, or we won't be able to survive tonight!"

"Brother, please go and talk to your commander, or the supervisor in charge of material distribution, to accommodate..."

With a smile on his face, Zhao Cheng comforted the soldiers behind him, and handed two level 4 energy crystal cores to the guard soldier.

"Go, go, go, I've said no, no, no, if you don't leave, I'm going to shoot!"

He looked at the level 4 energy crystal nucleus in the opponent's hand with disgust.

Immediately afterwards, he continued to wave his hands impatiently.

After speaking, he even raised his weapon.