Wasteland: My items are infinitely upgraded.

Chapter 139: Final Upgrade, Clearing the Negative Third Floor, and Being Attacked
Carrying nearly 500 milliliters of evolution agent, Lin Feng returned to the camp and started his last small-level evolution before being promoted to the second level.

After the nineteenth level of evolution was completed, it meant that the first-level cells in his body had evolved to the upper limit of the stage. From then on, there would only be the accumulation of quantitative changes, and no qualitative breakthroughs would occur.

Inside the Rock Horse Chariot, Lin Feng looked at the leader-level Rock Horned Horse Life Essence in his left hand and the seventeenth-level filter in his right hand, and fell into deep thought.

At present, the maximum pore size of the source filter has been reduced to 20 nanometers. As long as it is upgraded to one more level, it can reach the level of filtering the second-level source!
By then, the filtering conditions for the third-level source material should also appear. If successful, it means that Lin Feng’s evolutionary resources in the next few years can be solved by secondary processing of the source material filter.

After purifying and filtering the level 19 rock wildebeest source material in his hand and obtaining a full cup of pure source material, Lin Feng first consumed five health points to continue upgrading the filter.

Then eat a piece of cooked jerky to restore health and provide sufficient energy for the next evolution.

Slowly drink a large cup of pure life essence. The powerful essence begins to drive the evolution of cells in the body, moving towards deeper optimization and transformation.

Gradually improve the strength and vitality of cells.

Half an hour later, Lin Feng slowly woke up from the bed, opened his eyes, and looked at the reminder of the completed evolution:
"Lin Feng, lv19/19"

「生命值：150，体质：150，精神：149；lv19各属性上限150」

"Super Awakening: Brand Power (Slightly increases the speed of brand equipment enhancement and upgrade)"

"Item upgrade limit increased to level 19!"

"You can consume 5 health points to upgrade the lv18 machine gun, lv18 rapid-fire cannon, and lv18 source filter."

Lin Feng narrowed his eyes slightly, then checked the upgraded eighteen-level source filter beside him:
"Nano-grade source material filter level 18, red quality, brand"

"Basic Attributes: Maximum Aperture 10 nanometers, First-Order Genetic Impurity Filtration: 100%; Second-Order Impurity Filtration: 100%; Usage Times: 1; Upgrades consume health points."

"Evaluation: Can perfectly filter out foreign genetic impurities from first- and second-order life essences, obtaining pure essences to achieve immaculate evolution. The degree of filtration of third-order life essences is limited, requiring a maximum pore size of 1 nanometer to achieve complete filtration of impurities."

Although he achieved the expected effect, Lin Feng was not very happy, because the level of the third-order source quality was actually less than one nanometer!

This means that its pore size reaches the atomic level.

Lin Feng still remembered the chemistry he learned a long time ago, in which it was introduced that atoms, the most basic units of matter, have a size ranging from less than one nanometer to a picometer.

One millimeter is equal to one thousand micrometers, which is the size of single cells and bacteria.

One micron is equal to one thousand nanometers, which is the scale used to measure chromosomes, viruses, and some large molecular proteins.

One nanometer is equal to one thousand picometers, which is the measurement of size between atoms.

The specific size depends on the mass of the atomic nucleus, or more precisely, the number of positively charged protons, which determines the number of electrons in the atom and thus affects the size of the atom.

A small hydrogen atom, for example, is about 0.1 nanometers, or one hundred picometers, while other massive atoms are around a few hundred picometers.

Therefore, a pore size of one nanometer or less can definitely filter out all impurities.

Of course, some small molecules can also pass through, but the ribonucleic acid containing genetic pheromones will definitely be blocked out, which also ensures that the life source after filtration is absolutely pure.

However, this is also what Lin Feng is worried about.

Originally, he thought that the aperture that could filter the third-order source material was at most less than ten nanometers, and upgrading to level nineteen should be sufficient.

Now it seems that to be safe, the filter needs to be below one nanometer, so the level 19 filter is definitely not enough. At least the second-level orange quality equipment is needed to completely filter out the impurities.

Therefore, before being promoted to the second level, unless one uses the forced upgrade skill of the brand and consumes one level of one's own evolution level to forcibly promote, otherwise the filtering of the third-level essence will be a long way off.

I hope Bai Ye can keep his promise.

After clearing the negative third floor, he handed the second-level source essence of the patriarch-level rock hornbear to himself.

Otherwise, Lin Feng would never agree to accompany them into the negative third floor.

According to what they said before, the military factory is likely to be on the bottom three floors below the negative six floors, which are full of various dangerous pollution sources.

Moreover, when the pollution sources are enriched, a third-order distortion king will be born.

As the Saviors opened the sealed gate, who knows if there was only one level three mutant running to the middle and upper levels of the ruins.

If he didn't have the strength to evolve to the second level by then, Lin Feng would definitely have run away with the church team first.

After making plans, Lin Feng ate the evolved jerky while upgrading the rapid-fire cannon and armor-piercing cannon for the final time before the second stage.

Soon, according to the established upgrade and reinforcement strategy, the two heavy firepower weapons were fully upgraded:
"Rapid-fire cannon level 19, red quality, branded"

"Basic Attributes: Damage 120, Effective Range 2km, Damage Coverage 8m, Remaining Explosives 4000; Upgraded to Host Level Cap."

「额外属性：备弹回复1/1s；空间弹匣4000枚；范围杀伤(覆盖半径8米，中心1米伤害120)；极速追击(自动模式每秒十发)」

「Note: You can switch back to lv9 boutique AK freely」

After reaching the second stage and the maximum level, the rapid-fire cannon has a total of 4,000 spare bullets. The entire gun body has been upgraded step by step from the original fine AK model to the current heavy machine gun state of more than one and a half meters long.

The barrel alone is more than one meter long, with an inner diameter of more than 30 millimeters. Together with the 4,000 spare rounds of ammunition, the weight has exceeded one ton.

Lin Feng, who has now evolved to level nineteen, has a basic strength of nine tons, but he can only fire single shots with one hand.

If the automatic mode of high-speed pursuit is turned on, unless it is purely fire suppression, the only way to ensure accuracy is to hold the gun with both hands and use the left hand to assist in suppressing the gun.

The recoil of continuous firing cannot be suppressed with one hand.

Of course, the best way to use the level 19 rapid-fire cannon is to mount it on a mobile vehicle to provide long-range fire support and strikes.

It's a bit too much for an evolver to use directly. Maybe ten evolvers with firearm abilities can't compare to this top-level rapid-fire cannon.

The number of ammunition Lin Feng revealed to Bai Ye was only three or four hundred rounds, which was only one tenth of the actual number of rounds.

Therefore, the Salvation Army could never guess Lin Feng’s true strength.

Now, let alone thousands of mutants, even if there were tens of thousands, Lin Feng could take advantage of the narrow terrain at the stairs and carry out a dense fire blockade.

Four thousand rapid-fire cannons with a damage coverage radius of eight meters can effectively kill seven or eight flesh-and-blood deformers with one cannon.

The sustained intensity of its firepower, combined with the characteristic of no durability wear under the power of branding, can reach an incredible level!
As for the upgraded armor-piercing cannon, since its damage had already reached the upper limit of the second stage, Lin Feng optimized its bullet recovery speed according to the previously established enhancement direction:

"Armor-piercing cannon level 19, red quality, branded"

"Basic Attributes: Damage 150, Effective Range 2km, Damage Coverage 12m, Remaining Tungsten Core Armor Piercing 400; Upgraded to Host Level Cap."

「额外属性：备弹回复1/1min；空间弹匣400枚；范围杀伤(覆盖半径12米，中心2米伤害160)；火力覆盖(一秒六发持续五秒)；穿甲炮弹(穿甲能力提升100%，伤害+10)」

「Note: You can switch back to level 9 precision pistol freely」

Now there are 400 spare armor-piercing bullets, which are enough to cause devastating damage to 400 second-level mutants. The firepower intensity is strong enough.

In addition, with an ammunition replenishment rate of one round per minute, the armor-piercing gun can be replenished by providing fire suppression and replenishing the ammunition of the armor-piercing gun during intervals between uses.

By alternating between the two, Lin Feng felt that as long as he had enough time, he could clear the sixth floor of the restricted area of ​​the ruins alone with the cover of other team members.

Then, block the third-order deformer at the entrance to the negative seventh floor.

Unfortunately, time is running out, and there are also the Saviors who are determined to enter the bottom three levels, so Lin Feng has to restrain his clearing plan. He has to follow their arrangements to obtain the evolution agent first, and then consider collecting the wasteland wolf source material.

After checking the two weapons, I found that the upgrade time of the nano-source filter was quite long and the reminder had not popped up yet.

It was exactly twelve o'clock noon, and Ding Yi's voice came from outside, calling out, "It's time for dinner."

The lunch was eaten by everyone together.

A-Lian and her companion, who had entered the ruins for the first time and returned safely, finally woke up after sleeping for nearly twenty hours.

The weirdness and horror inside the ruins caused the mental state of the two to plummet. Fortunately, after resting for such a long time, they have recovered.

After learning about the current situation and that there was no mission for them, the two looked at each other and breathed a sigh of relief.

For the two who were only at the early stage of the first level, the exploration mission of the ruins was still too dangerous. If they were not careful, they would die in it, and then be eaten by the mutants, or gradually become corrupted.

In Lin Feng's opinion, it would be more useful for them to stay and protect the convoy camp than to go down and become a hindrance.

After all, the dried meat in the transport vehicle is the basis for the execution of this mission and the most important supplies for the team.

After Lin Feng evolved two levels in one breath, only ninety pieces of the eighteen-level jerky were left out of the one hundred pieces. This was mainly due to the upgrade of the source filter, which consumed nearly fifty health points and directly upgraded from level nine to level nineteen.

In addition to the physical exhaustion after continuous fighting, it is also necessary to replenish energy in time and restore physical condition, so the reserve of evolutionary meat is consumed very quickly.

These late-stage evolutionary meats, including the mid-stage evolutionary meat in Chen Shanshan's hands, and the ordinary evolutionary meat that the other five team members eat on a daily basis, are worth nearly 100,000 points in total.

Lin Feng was really worried about only letting Liu Mingfei, Liu Qian and Ding Yi guard the place.

If Alian and Amin are included, there are a total of three combat members, enough to defend the camp and the chariot.

Especially the ninth-level fine AKs in their hands, which can fire Liu Qian's empowered bullets, and can deal with one or two even if the first-stage late evolvers attack.

The two women who had woken up at this time were cooperating with Ding Yi to make a sumptuous lunch.

I slept for almost the whole day and was already starving.

So a big meal was soon placed on the table.

The seven of them sat together under the tent, preparing to eat.

Lin Feng specially called the church team opposite. After all, there were only three of them and they couldn’t eat much.

But Shen Yue is an exception.

So before the meal officially started, Lin Feng stewed a large pot of yam and horse meat on the table and divided it into ten equal portions to ensure that everyone could eat their fill.

So when Shen Yue came over wiping her saliva, she found that there were only tableware for ten people on the table. The yam and horse meat stew had been divided equally. Apart from some vegetables and seasonings, there was no other trace of horse meat.

Most of the joy and smile on his face disappeared in an instant.

Fortunately, we used ten kilograms of early evolutionary meat this time, ensuring that everyone could get two kilograms.

But Shen Yue, this guy, devoured a whole bowl of food in less than five minutes after the meal started.

Seeing her looking at others with helpless eyes and having to make salad with vegetables mixed with nutritional supplements, Lin Feng rolled his eyes and handed her his bowl.

Lin Feng mainly wanted to taste it. No matter how much of the first-stage evolutionary meat he ate, the replenishing effect would be very limited for him who had already been promoted to level 19.

It would be better to let Shen Yue eat more so that she can be fully prepared for the upcoming clearing mission on the negative third floor. When everyone was about to finish eating, Lin Feng spoke:
"The elimination of the aberrants in the ruins has already reached the negative third floor. Once the negative third floor is cleared, we will move on to the negative fourth floor. Our task of collecting the Steppenwolves will be completed soon."

"The results will be out by tomorrow, the fourth day at the latest. I think we should be able to have everything ready by the fifth day."

The Salvation Army is now in a very urgent situation. Like Lin Feng and his companions, they need to speed up the process and know that time is running out.

It is now the third day, and there are only seven days left before the scorching sun descends behind us.

Everyone nodded, lamenting the impermanence of life.

Unexpectedly, in the end, I would need to rely on the power of the Saviors to find the Steppenwolf Source Crystal and complete the mission.

Shen Yue immediately spoke up and asked the key point:

"When all the Steppenwolf Source Crystals are gathered, if you want to stay and protect the Saviors while they transport their weapons and equipment, we'll have to go back early."

"Oasis is pressing us hard, and you know why."

"You can send a few people to drive a tram to protect the source crystal all the way. After arriving at Oasis Town, you can find Lord Su An to exchange for rewards."

Lin Feng hummed and glanced at Chen Shanshan beside him:

"No problem, I'll make arrangements when the time comes."

Zheng Yanying nodded. As long as Lin Feng was willing to continue cooperating and fulfill his agreement with the church and Father Su An, everything else would be easy to deal with.

After discussing this, we were almost done with dinner.

It was only half past twelve, and there were still two and a half hours until three in the afternoon, so Lin Feng returned to the car to continue sleeping and recovering his energy.

This clearing operation on the negative second floor lasted a total of eight or nine hours. Although Lin Feng only needed to pull the trigger to carry out long-range bombardment, he had to walk all the way and guard against the sudden attack of the second-level mutant, so his mental consumption was still not low.

So taking a two-hour break now will allow us to be fully prepared for the upcoming battle on the negative third level.

On the other side, Chen Shanshan and Shen Yue, who had eaten and drunk their fill, also fell asleep.

The rest of them maintained weapons and equipment.

Two hours flew by.

Lin Feng set the alarm and got up on time at 99:. He took a look at the upgraded th-level source filter. The maximum aperture was only reduced to one nanometer, which could only filter out % of the impurities in the third-level source.

Just the last little bit.

It was similar to what Lin Feng expected. In order to obtain the technical ability to filter the third-level source essence, he had to at least upgrade to the second-level orange quality.

However, now we can perfectly filter out all the impurities in the second-level source essence and obtain pure life source essence.

Let Lin Feng successfully achieve the second-level pure evolution.

This also means that even if he fails to ascend to the third-order king in the future, Lin Feng will have two opportunities to change his evolutionary path. He can either choose to join the top power in the wasteland and become a believer of beings above the third order, or directly evolve into a different species...

In short, the purer you keep yourself, the more evolutionary paths you will have to choose from in the future.

But unless he is left with no other options, Lin Feng will definitely follow Bai Ye's example and walk his own evolutionary path to become an independent third-order king without any constraints or restrictions.

Of course, if there is a chance, Lin Feng would like to see what the evolutionary path after the third level will be like.

The end point of evolution is to become a true ultimate life, or a great and eternal god.

But before that, let’s advance to the second level first!

Lin Feng then stood up and walked out of the rock horse chariot with his weapons and equipment, came to the camp, and put on his sealed armor.

At this time, Chen Shanshan was already ready, and Shen Yue on the other side was also woken up by Zheng Yanying and was about to finish packing.

Ten minutes later, the three of them had finished everything and then walked towards the cave entrance at the foot of the mountain not far away.

The Salvation Army soldiers in the cave took a rest after lunch, and now they woke up one after another and started new cleaning work.

This time, Lin Feng and the other two will directly join the main force and be responsible for providing long-range fire support.

Leader Bai Ye was standing near the cave entrance, instructing Ma Li, another second-level evolver in the Salvation Army, about the arrangements and preparations for everyone after entering the ruins.

Although Ma Li is tall and strong, she is actually a mechanical engineer, not a combat member. She is not suitable to follow the crowd and enter the dangerous ruins.

Previously, she was brought underground in order to break open the closed iron door. Now that it is purely for a battle, it is more appropriate to let her stay in the cave on the surface to maintain order and the refraction of sunlight.

After talking to Ma Li for a while, Bai Ye, who had already seen Lin Feng and the others, walked towards this side.

Bai Ye noticed at a glance that the rapid-fire cannon in Lin Feng's hand was much larger than when he first saw it.

Firearms ability users can assemble various firearms and enhance their power, making them humanoid self-propelled arsenals. Usually, one person can unleash the firepower of an entire company.

Lin Feng, who has now evolved to the nineteenth level of the late first stage, is definitely stronger than an ordinary early second stage evolver.

If the two sides were to compete, Lin Feng would definitely win from a hundred meters away.

This is the power of the gun user.

This is also the reason why they can thrive in big cities.

There is almost no team that would refuse to recruit an evolver with firearm abilities, although the latter mostly form a hunting team with themselves as the core.

Just like Lin Feng.

Therefore, even in a remote small town, Lin Feng can stand on equal footing with the Oasis Church and reach cooperation.

"It looks like your strength has increased a lot. How are you doing? Have you had a good rest?"

Bai Ye smiled and said that she had already checked the situation on the second negative floor and was very satisfied with Lin Feng's clearing results.

At this moment, the evaluation of his strength has been raised to a higher level.

Lin Feng nodded:
"I would also like to thank Lord Bai for his generosity."

"We've had a good sleep and have enough energy to deal with the upcoming battle on the -3rd floor."

Bai Ye glanced at the two women behind Lin Feng. They were both only at the mid-first stage, while the protected Lin Feng was already at level nineteen. He then asked:

"Do you need to send two more people to protect your safety? That third-level aberration king is very cunning. I think after seeing your combat power, it will command those second-level aberrations and corruptors to launch a sneak attack on you."

Lin Feng frowned slightly, obviously not expecting such a thing to happen. Could it be that the deformed monsters also evolved intelligence?
So he asked back:

"Did that third-order aberration develop self-awareness? Or is it highly intelligent? Comparable to humans?"

Bai Ye took a deep breath and nodded seriously:

"Yes, we had two encounters with it. One was on the negative second floor. It led a large number of second-order aberrations, lurking in a certain house, and launched a surprise attack on us."

"Luckily, we had experience breaking through the goal before, so we were prepared along the way. Therefore, we didn't suffer much loss and were able to break up their attack."

"The second encounter took place on the previous negative third floor. While you were clearing the negative second floor, we were attacked at the entrance to the negative third floor. This time, the third-order distortion king had learned its lesson again, and tried every possible means to attack the focusing refractor at the stairwell, hoping to disrupt the light attack."

"They even went so far as to pile up the remains of the aberrations at the entrance to prevent light from reaching Level -3."

"And those guys have already learned to use the debris of buildings on the ground to block out the sunlight. It must be the Third-Order Abnormal Church, or they wear it."

"They are evolving very quickly. Previously, this was simply because they were isolated from the outside world and had no contact with intelligent life. Now, in the battle with us, they are growing rapidly."

"Second-order aberrations already have a certain awareness of danger, and third-order aberrations even know how to respond to danger. Although it's unclear whether they have self-awareness, we must not continue to treat them as mindless zombies..."

"Otherwise you will suffer a great loss!"

Lin Feng took a deep breath and nodded seriously:

"Understood. Then two of you will come. That will be just enough to form a square formation, allowing me to stay in the center and provide support."

Bai Ye nodded and called two people over.

There are two team leaders, who have evolved into the late first stage. One of them is the captain who cooperated in the cleanup before.

Lin Feng asked them to follow behind him to ensure the safety of the rear.

With their late evolutionary strength, they are enough to deal with the sudden attack of the second-level mutant and buy Lin Feng time to react.

After the personnel were arranged, everyone began to enter the underground ruins and engage in a decisive battle with the deformed herd on the negative third floor.

This time with Lin Feng joining, the firepower of the Salvation Army increased several times.

Soon everyone arrived at the entrance from the second floor to the third floor. Before walking in, Lin Feng saw wisps of smoke floating behind the focusing refractor.

If it had not been still "working hard" to resist the monsters pouring in from the bottom of the stairs, the second underground floor that had just been cleaned would definitely be occupied by the monster tide again.

More than ten main forces of the Salvation Army in front, most of whom were in the late first stage, walked down the stairs with shields and flamethrowers in their hands.

Lin Feng followed behind them and saw the corridor full of flames. A dozen people spread out in a semi-circle at the entrance to the underground third floor, forming a wall of fire.

The member behind him who was operating the focusing refractor also began to adjust the direction, shining into the inner area of ​​the negative third floor to illuminate the direction for the team.

The raging fire killed one first-level aberration after another that rushed towards them.

However, it didn't take long for the smooth progress to
Suddenly, a group of dark shadows rushed out from the main road!
I saw a group of deformed humanoids with various stone slabs tied to their bodies and iron door panels in their hands rushing towards the crowd!
When the sunlight shone through, they saw a group of tall second-order deformers who were trying to break the formation.

Lin Feng narrowed his eyes slightly, and immediately raised the level 19 rapid-fire cannon in his hand, aiming at the incoming deformed form.

I saw twenty or thirty shells pouring out, instantly severely damaging a bunch of deformed creatures.

The building materials in their hands can at most resist the sunlight or block the burning of flames for a while, but they have no resistance to the impact damage of the explosion.

But just as Lin Feng and his companions were rejoicing that the aberration's offensive had been broken...

Suddenly, several ghostly figures appeared on the flanks of the entire advancing formation!

The speed is so fast that it reaches 100 meters per second!
"careful!"

Chen Shanshan was the first to sense it and spoke out to remind them.

Shen Yue immediately raised her shield and stood in front of Lin Feng!
(End of this chapter)