In less than two days, the network of the entire world was completely interrupted, and Chen Dong had no way to continue to contact the outside world, which also meant that there was no way to send information.

However, the number of mercenaries in the system has reached a terrifying number.

In less than two days, the system upgrade value reached a terrifying more than 17.6 million, yes, it is such an exaggerated number.

In the case of the apocalyptic threat, most people choose to believe in the system, although it only occupies a small part of the whole world, but this small part is already a very terrifying number.

1762.4W/100W。

Do you want to upgrade the main system? 】

"Level up!"

[Main system upgrade completed]

——————

Mercenary system (LV3: 1662.4W/1000W):

Unlock the Open Weapons Research Center and Arsenal.

——————

Weapons R&D Center (LV1: 0/300W):

Establish the required upgrade value: 50W

Nano Weapon (Upgrade Value Cost: 100W) (R&D Progress LV0: 0%)

LV1。 Nano Weapon Unlock:

U1: The first generation of tracked miniature combat robots

Size: 20cm diameter sphere

Exterior color: silvery-white

OWN WEIGHT: 12KG

Action Mode: Flying

Combat positioning: auxiliary combat, vehicles

Maximum load: 10KG

Armament: M62 combat miniature laser gun

Core system: U70

Kinetic energy provides: light, heat

Primary source of energy: solar energy

ATF1: nanorobot carapace

Number of nanobots: 16

Reaction speed: 3ns

Defense range: 1 square centimeter

Energy supply mode: biocurrent

Genetic Weapon (Upgrade Value Cost: 300W) (R&D Progress LV0: 0%)

First-order gene unlocking reagents:

Push the boundaries of living things and unlock deeper genetic information

Stabilization Reagents:

Uncomfortable reactions to the unlocking of stable genes

Stop Reagent:

Terminate the gene unlocking process, with a 30% chance of death

——————

Arsenal (LV1: 0/300W):

Establish the required upgrade value: 50W

Production speed: 100%

Producible Weapons: None

——————

[Do you choose to upgrade your portable warehouse system?] 】

"Level up!"

Portable Storage System (LV3: Upgrade Value 0/1000W):

Provides the host with 100 cubic meters of portable nanospace to store anything (except living creatures)

——————

[Do you choose to upgrade the mercenary training system?] 】

"Level up!"

Mercenary Cultivation System (LV3, upgrade value 0/1000W): Open strength, speed, vision, hearing, smell, danger perception and cell regeneration.

Systematic reinforcement of mercenaries recorded by the system, mercenaries will get corresponding mercenary points after completing system tasks.

Points can be used to increase the level of mercenaries, and each level increase can be selected to strengthen the body.

Mercenaries can be upgraded by up to nine levels.

——————

[Because you are a Level 3 mercenary, you can choose to erase the two attribute boosts and re-select the attributes you want to improve]

"No, you don't."

[Do you choose to upgrade the defense construction system?] 】

"Level up!"

Defense Construction System (LV2: 0/500W):

Unlock a Level 2 Defense Fortress (upgrade cost 300W)

Unlocks the Level 2 Auto-Defense Turret (upgrade cost 30W): A smart turret with unarmed equipment

Unlock the second-level autonomous power supply system (upgrade value consumption 10W): 1500 kWh/day, power supply in the range of void particles with a diameter of 0-1000 meters.

Unlock Level 2 Water Purification System (upgrade value consumes 10W): 15 cubic meters per day

——————

Level 2 Defensive Fortress:

Well-established independent defensive fortresses

It can survive 3,000 people normally

Floor area: 16W square meters

Equipment: Level 1 defense grid, Level 1 defense plasma mask system

Energy Sector: Any energy source can be used

Main system: Keliya, semi-finished artificial intelligence (upgradeable)

Defense grid covers an area of 500m×500m

Ion mask protection range: Sphere mask with a radius of 300m

——————

[Do you choose to upgrade the mercenary trading platform?] 】

"Level up!"

Mercenary trading platform (LV1: 0/500W): Provide material trading channels for mercenaries under the name of the system

Mercenaries can exchange supplies and weapons with each other, and can also use mercenary experience points to buy items sold by the system.

Open system mall, providing all the current stage of the earth armed equipment purchase.

——————

[Current system upgrade value: 1362.8W/1000W]

Chen Dong did not directly upgrade the system to the fourth level.

The fourth level of the system will open up the mecha system and the transportation system.

From the name, you can tell what these two systems do, from the current situation, these two things will not play any role at all in a short period of time, and judging from the increase in upgrade value, the higher the level, the more it will be consumed.

Chen Dong simply didn't have that much upgrade value to build more things.

Now the remaining upgrade value is only 1362. 8W, arming this level 1 fortress may be more than enough, but if a level 2 fortress is built, it will obviously not be enough.

While a Tier 1 Forts can be upgraded directly to a Tier 2 Fort, the upgrade value spent on them is an exaggerated amount.

[Decide to upgrade all primary power supply equipment to secondary level?] 】

"Sure!"

[Upgrade completed, deduct upgrade value 450W]

Gritted his teeth, there was some pain in his flesh, this consumption is not a small amount, but the improvement of power supply equipment is very necessary, and the entire fortress is now completely powered by electricity.

The power supply of the secondary power supply equipment is 1500 kWh per day, and the power supply of 50 units per day is 75000 kWh, and the entire fortress consumes 1W kWh of electricity per day when it runs at full capacity, and the remaining 65000 kWh can be used for defense.

It's not much, but it's surrounded by mountains, and a short burst of fire can keep enemies out of reach.

In particular, the government troops around me may have become interested in the structure of the ion layer, and the number of troops gathered here in the past two days has gradually increased, although they do not want to be enemies of the government.

But if someone wants to infringe on his capital to survive in the apocalypse, Chen Dong will definitely have zero tolerance, but it is obviously unlikely that a frontal war will be fought head-on, and what is the strength of the ion shield of the first-level defense fortress Chen Dong is not very clear.

It would be embarrassing if a missile was smashed, and if there was a real war, the power supply of weapons would definitely be the biggest problem, and there would definitely be an energy shortage, and it would definitely happen if there was no combat effectiveness in the fight.

It's better to be passively defensive, I can only hope that the government will not take the initiative to attack, after all, they are human beings in the fortress, and now the government has to face zombies.