Liu saw that there were not too many zombies outside, and there were Zhang Yi and Kuroko who were sweeping.

So he walked out with Liu Xiaobai and learned to read and count in the square.

Liu Xiaobai’s learning ability is very strong, and he almost never forgets.

Two people teach one by one, and in ten minutes, Liu Xiaobai already knows more than a dozen words.

You can also calculate addition and subtraction within ten, which is simply a prodigy!

Zhang Yi is not interested in taking care of children and teaching, and he doesn’t know anything.

But he looked at the time, and the 48-hour cooldown period for RV upgrades was over, and he could upgrade directly.

Bite! Is it necessary to upgrade the RV if it is detected?

Be!

Bite! Consume 2 tons of steel and upgrade your RV to Level 2!

【Vehicle Model】: Customized version of military-grade luxury RV

[Level]: Level 3 (can be upgraded after 96 hours)

【Interior space】: 200 square meters

[Internal facilities]: Added two guest rooms, a combat simulation warehouse, and a biology laboratory

Battle Simulation Warehouse: You can conduct holographic imaging simulation battles with zombies you have encountered, improve your experience against enemies, and get combat attribute points by simulating kills for the first time

Biological laboratory: From the blood samples of mutant organisms collected, biological agents with different functions are produced.

[Outer Armor Level]: Level 3, can withstand 1200 damage, and the material points consumed after leaving the battle can slowly restore the resistance value.

[Weapon Level]: Current level 2!

[Weapon]: Enhanced Flamethrower: Consume energy points, eject flames with a thousand degrees of heat, spray range 20 meters, duration 7 (5+2) seconds, can be fired 15 (10+5) times continuously, cooldown 9 (10-1) minutes.

[New Weapon]: Giant Deer Collision Horn: After starting the collision, the speed of the car is instantly increased to 150 miles, the mass is increased by 50 tons, it lasts 20 seconds, and it crashes into everything!

Note: Initiating a collision does not consume armor value when an impact occurs, and the cooldown is 3 hours.

It’s getting stronger again!

Zhang Yi is very satisfied with the effect of the new upgrade of the RV.

With the upgrade, the shape of the RV has also changed.

The barrier removal device becomes in the shape of a shovel with a sharp blade protruding from the middle.

It looks majestic.

Bite! RV upgrade level 3 completed.

The materials required to upgrade a Tier 4 motorhome are:

Material Point: Satisfied.

Energy Point: Satisfied.

Gold consumption: ten kilograms.

Upgrade time cooldown: 95 hours, 59 minutes, 52 seconds.

The next upgrade will not be until 4 days later.

However, this upgrade has updated a lot of new features, and Zhang Yi is ready to try them one by one.

This time I have entered the RV, and the space inside is so spacious that it is beyond Zhang Yi’s imagination.

Two hundred square meters, which is simply the size of a small villa.

The aisles are also much wider.

The lift also seems to have become higher.

Look at the big golden and dazzling chandelier in the living room.

The lift of the entire interior space of the RV can be about five meters.

As soon as the stand is raised, people’s mood is suddenly much more relaxed.

The room was nothing to visit.

It’s just two more bedrooms.

The bathroom has become much larger, not only with a bathtub, but also with a shower, a sink, and a shallow paddling pool.

The toilet is separate from the bathroom.

The toilet is now the size of a bedroom.

The big ones are a bit of an exaggeration.

Not far behind the cab is the laboratory.

Zhang Yi directly pushed the door and walked in.

The structure of the laboratory is very simple, it is a clean and tidy small room.

Directly in front of it, there was an electronic screen that recorded the mutant creatures that Zhang Yi had killed and their blood samples.

Now there are two samples above.

The first is the spider blood obtained by the giant mutant spider that Zhang Yi killed in the 7th.

The second is the giant zombie hound that Zhang Yi killed behind the repair shop, which also automatically stores its DNA structure.

Tip: Do I spend 500 Medical Points to develop new potions?

The current number of medical points is 1,650,800,964,235 points.

Looking at such a long series of numbers, Zhang Yi simply didn’t even bother to count.

In fact, this number does not mean:

Sufficient resources, can it be developed at will?

The system is really troublesome.

Zhang Yi clicked on the first option, spider blood, and then clicked R&D.

Moisture… Moisture…

The production strip on the touchscreen quickly fills up.

Then the dialog box appears again:

[Rapid Growth Elixir] has been made!

Rapid Growth Potion: Multiplies the growth rate of any creature in its infancy or growth stage, and the effect is stacked with multiple uses!

Note: At most, the agent can only make the organism grow to maturity, and then use it again without any effect.

Well!

Zhang Yi nodded.

This is indeed what he wants.

Imagine you planted a watermelon seed in your field today.

After using the fast-growing potion, how cool is it to be able to eat watermelon in a few days?

Rushed to buy online.

And with it, you don’t have to worry about food in the future.

Grow as you grow, eat as you want.

Not only crops, but also livestock, quickly maturing, immediately out of the slaughter!

Even the problem of meat quality has been solved.

Next, Zhang Yi clicked on the second option: the giant zombie hound.

Chose R&D!

Moisture… Moisture…

After another familiar sound.

The dialog box appears again on the screen:

Primary fortifier has been developed and made!

[Primary Booster]: It can randomly enhance the attributes of the human body in small amounts, and each person can use it up to three times!

Add attributes?

Zhang Yi smiled slightly.

That’s a good thing, a property given for nothing.

Quite the same as eating the essence of evolution directly.

And it doesn’t matter if you enhance your human stats and combat potential ratings.

That is to say, no matter who uses this potion, the increase is the same.

This is very cost-effective for people like Xia Xue, Li Yong, and He Zhigang who have only A combat potential ratings.

Let’s try the effect first!

Zhang Yi selected to make 3 primary booster mixtures.

Bite!

From the lower exit of the electronic screen, three capsules popped out.

This setup is somewhat similar to a vending machine.

Zhang Yi picked up a capsule and looked at it, it was an ordinary capsule, and it was white, and there was no packaging.

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