There are more than a thousand elevator shafts leading to the dungeon in Jinghai City, and the deepest area is located ten kilometers underground.

It is conceivable that taking the elevator is also a very test of patience.

Lu Xun casually found a place to sit down, took out a Bluetooth headset from his pocket and put it on, turned on the music function of the communicator, and closed his eyes while listening to the song.

The soothing melody relaxes him.

One after another, citizens passed the test and entered the elevator.

There are men and women, dressed differently, almost all of them are adults, and they are office workers from all walks of life.

Many of them have implanted more or less prosthetic bodies, mechanical and flesh combined, and metal structures are exposed on the surface of the skin.

After modifying the flesh, the work efficiency can be greatly improved.

In the second-level self-circulation city, 80% of the manual labor in human society has been replaced by machines and AI, and productivity has progressed rapidly.

But AI can't completely replace humans either.

There's a lot of work that has to be done by people.

Only the self-circulation city above level 4 can achieve fully automatic production.

The development of the city needs to be tailored to local conditions, according to the geographical location, surrounding environment, rift resources and other factors, to tailor the development strategy.

The development potential of Jinghai City is actually quite average.

It's already good to be able to rise to level two, and level three is estimated to be the city's upper limit of development, and it's enough to go up.

After the third level, there will be no class barriers between elites and commoners, because the rich resources will allow everyone to live as an elite.

But the gap between each level of the Circulation City is super large.

It took Jinghai more than 200 years to go from one to two.

Want to get to level three? Borrow another 500 years from heaven!

No matter how beautiful the future is, people today will not be able to enjoy it.

All they can do is to implant a prosthetic body, modify the physical body, improve their ability to create value, enhance their self-competitiveness, and strive to be among the elite!

Therefore, Lu Xun, who was wearing a school uniform and did not have any prosthetic parts on his body, looked a little abrupt in the crowd.

Many citizens couldn't help but look at the boy with their eyes: tall and thin, with broad shoulders and slender limbs. There is still a trace of childishness in the delicate facial features, which looks vigorous.

Is this a school uniform for No. 1 Middle School? How do aristocratic students run to the outer city to take the elevator? Are there no classes on Mondays? Everyone felt quite novel.

Lu Xun didn't care about the eyes of others, and listened to the song by himself.

After the elevator had gathered more than 100 people, it finally started and slid deep underground.

It's like catching the subway to work, but with a little more weightlessness.

Each time you reach the underground base, the elevator stops and the door opens.

People keep leaving and joining in the middle of the process.

Thirty minutes later.

Finally arrived at the "-174F" floor.

Lu Xun walked out of the elevator door, and a vast and huge base came into view!

Covering an area larger than the inner city on the surface, the lights illuminate every area.

On this level, there are three livestock farms, seven slaughterhouses, and many food processing plants, tanneries, and fertilizer factories......

So as soon as you go out, you can smell a slightly disgusting odor in the air.

But Lu Xun was already used to it.

He took the base bus to set off, and it took another ten minutes to finally arrive at his destination - Lin Sheng Slaughterhouse!

The slaughterhouse covers an area about the size of two football fields and consists of several factories and warehouses, where the cleaning, processing, inspection and refrigeration of livestock are carried out.

"Yo~ Why did Xiao Lu come, skipping class again, right?"

The security guard at the door was a middle-aged uncle with a beard, and he was surprised to see Lu Xun coming.

This kid only went back to school yesterday, and here again today?

"Well, good afternoon Uncle Li, is the old octopus there?" Lu Xun said hello and asked.

"You should check your order in the cold storage, right? You go check it out. ”

"Okay, see you later."

Lu Xun nodded, walked into the slaughterhouse, and went straight to a warehouse in the southeast.

When he arrived at the place, he did not rush to knock on the door.

Instead, he glanced at the ground on the right, where there was a pot of meat.

This is the codeword, which means "in business, safe".

If a pot of cacti is placed, it is "the wind is tight, and it is temporarily closed".

The slaughterhouse is just a camouflage.

Lu Xun's nominal "apprentice" identity is also a disguise.

This is actually an unlicensed prosthetic hospital, also known as a "black clinic".

It's just that the old octopus is so perfectly disguised that the nearly 1,000 employees of the slaughterhouse don't know the truth.

There are only two prosthetic doctors in this small clinic, in addition to the old octopus, there is also Lu Xun himself.

The code hidden in the flower pot can only be understood by them and some old customers.

Lu Xun never showed his face to receive treatment.

Every time, I changed my outfit and put on a mask and sunglasses before I went to contact the guests.

Therefore, only the old octopus in this world knows his true identity.

After all, it is against the rules to open a black clinic, let alone a prosthetic hospital.

If caught, they face huge fines and even criminal liability.

So it can't be too cautious!

Bang Bang –

Lu Xun knocked on the door, and after a while, footsteps approached behind the door.

The other party had already known the identity of the person through the surveillance, so he opened the door with confidence.

"The little bunny is finally here, and I'm dying!"

The old man's voice was slightly hoarse, and an old man over sixty years old appeared in front of him.

He was bald on the top of his head, with only a mess of gray hair on his temples and around him.

The left and right eyeballs were replaced with different types of electronic eyes, one large and one small, one red and one green; The ears have also been replaced with cat-like mechanical prostheses.

In addition, the hands and feet are all mechanical, with an icy metallic sheen.

Of course, the most eye-catching thing is the six robotic arms he installed on his back, some thick and some thin, retractable, foldable, and with different shapes, like six octopus tentacles.

This old man is Lin Sheng, nicknamed "Octopus Butcher".

Once a master prosthetic doctor.

In a very serious medical accident, the old octopus had his license revoked, fined his family and deprived of his residency in the Special Administrative Region.

He is also Lu Xun's mentor.

But for some reason, there is no master-apprentice relationship between the two, only a relationship of interest.

"Haven't you modified that nanowing yet? Today is the deadline boy. ”

The old octopus hurriedly dragged Lu Xun inside, and his tone was anxious and irritable: "This is an old customer, we can't lose our reputation." ”

"I don't need you to teach me how to do things." Lu Xun glanced at him coldly, and threw the schoolbag to him casually: "If it weren't for the face of money, I wouldn't have done this disgusting bad errand!" ”

It was in order to modify this broken body that he skipped class for two weeks, and he didn't even go to the opening ceremony.

A centaur, holding the mechanical wings of the hippopotamus clan, asked Lu Xun to help install it on it...... Neurotic, right?!

The physical structure of different races is different.

Therefore, the same model of prosthetic products cannot be used in multiple families.

When buying a prosthetic, you have to tell the seller which race you belong to, provide detailed data about the body, and even down to which bloodline branch of that race you belong to.

After all, the elves are also divided into night elves, blood elves, green elves and the like.

A custom-made mechanical wing for the hippopotamus clan on a centaur?

Although you both bring a "horse", it's completely interspecies!

Lu Xun refused at that time, saying that he couldn't do it.

The old octopus begged him for many days, but he was unmoved.

In the end, the reason why I took it was because the other party added money......

Lu Xun used the "omniscient right hand" to analyze the body of the centaur, and then it took two weeks to modify the prosthetic wing into a model suitable for the centaur.

"Don't be so resentful, I know it's really hard for you to do this, but isn't it good to have money to earn?"

The old octopus opened the school bag, put the mechanical arm into it, and slammed it out.

Soon a fist-sized nanometal ball was removed.

When activated, the sphere slowly unfolds and flows like fine sand.

In the blink of an eye, it appeared in its original shape and turned into a pair of mechanical wings with a wingspan of more than eight meters, which is very stylish!

Nanomaterials are not commonly used in prosthetic manufacturing, and although they are easy to store and have a cool effect, their practicality is very average.

Only pteromorphic prostheses are used more.

The pair of mechanical wings in front of him were different from what he saw last time in many places, and they were obviously changed by Lu Xun.

"Haha, I knew you kid had this ability."

The old octopus's eyes lit up, and he couldn't help laughing, and praised Lu Xun fiercely.

"One thing to warn you, that centaur lied." Lu Xun's tone suddenly became serious.