Chen Xin naturally didn't know anything about Azu and the others' intention to seize his refuge and even control him, and Chen Xin didn't even know that his refuge was being monitored.

But even if he knows, I'm afraid that in Chen Xin's opinion, this is not something worth caring about.

With the sturdiness of today's 300mm thick nichrome armor steel gates at the main entrance of the shelter, even modern armies would have to rely on heavy firepower to blast the doors open.

This kind of heavy firepower is not a heavy machine gun or a rocket launcher, or even a mortar is not enough, but a real heavy firepower, at least the armor-piercing shells fired by the main gun of the main battle tank.

Don't think this is an exaggeration, during World War II, the main turret of the Bismarck-class battleship had a frontal armor thickness of 360mm, the battlecruiser Hood had a frontal armor thickness of 381mm, and the battleship Missouri had a frontal armor thickness of 495mm......

It can be said that Chen Xin's gate is the battleship-class defense during World War II, and the main turret armor of a battleship during World War II is the thickest part of the entire warship, and only the main guns of other battleships can penetrate it.

Even with the development of modern military science and technology, the armor-piercing ability of artillery has been greatly improved, and it is not possible for ordinary caliber artillery to penetrate 300mm homogeneous nickel-chromium alloy armor steel.

Moreover, this kind of large-caliber heavy artillery, even in a military power like the Blue Star Five, is also used to equip the equipment of the first-line main combat forces, not to mention the special police or armed police, even the general second-line troops may not be able to have such heavy firepower.

Therefore, several terrorists are really not taken seriously by Chen Xin.

Even if they can launch a man-bomb offensive and let the cannon fodder who is not afraid of death be tied with explosives to blow up the door, the two double-pack Makqin at Chen Xin's door are not to be seen.

Although the bullets were not prepared much, with the assistance of automatic aiming, there was still no problem in killing three or five hundred people.

To put it mildly, with the current defensive capability of Chen Xin's shelter, even if the special police and armed police in the urban area attack together, there is no possibility of defeating it.

Perhaps the biggest they could achieve was to use heavy machine guns to leave a few bullet marks on the doors of the new vault.

With such a defense, Chen Xin naturally does not worry about his own safety issues, so he has time to renovate his car to his heart's content.

After Li Yulong sent car parts and other related materials, Chen Xin's car renovation plan was also carried out smoothly.

Today's car is no longer the SUV it used to be, and it can even be said that it is completely two cars.

If it weren't for the information concept blurring technology provided by the system, I am afraid that no one would think that the car in front of them, which is comparable to a large bus, is converted from an SUV, and there is no similarity between the two at all.

The 12-metre-long body is underneath a segmented crawler chassis, with a four-metre-long track underneath the double-row, three-proof cockpit at the front and a six-metre track underneath the rear living compartment.

Chen Xin originally planned to make a whole track, but after completing the upgrade, it became such a segmented type, and he could only acquiesce, after all, he was not a professional, and he couldn't distinguish which one of the whole tracks and the two tracks had better performance.

The car is made of 9mm thick steel plates as skin, and the main parts are equipped with armor protection plates, and the chassis can resist mines or grenades, and even the glass of the front cockpit can only be penetrated by large-caliber anti-materiel sniper rifles.

The surface is sprayed with snow camouflage, which is the best camouflage in this dark snow environment, and the triple 200KW output power isotope temperature difference battery used as the power source for electric propulsion makes this car extremely difficult to spot.

The infrared night vision device attached to the cockpit allows the car to not even have to turn on the lights when driving, which is more effective in eliminating the possibility of the car being discovered.

In addition to these, the car also comes with a radar that Chen Xin can't figure out the model, which can easily detect all moving objects within a radius of 5 kilometers; As well as four military drones, two of which also have machine guns as weapons.

There is also a hidden 12.7mm caliber three-barreled rotary machine gun on the roof, equipped with high-explosive incendiary armor-piercing shells, and no land vehicle can withstand this level of firepower except for the main battle tank.

Inside, the cabin is a luxury motorhome with a fully functional cooking station with an induction cooker, microwave, sink, washing machine, dishwasher, and cupboards for a large number of kitchen utensils.

The dry and wet separation toilet in the car, except that there is no bathtub, is no different from an ordinary home bathroom.

The two well-designed 2.1m×1.8m double beds and two 0.8m×1.8m single beds can sleep at least six adults without pressure.

The carriage is equipped with a complete water circulation system, with a water tank that can hold five tons of water and a water treatment filtration system, which is enough to provide enough domestic water for six to eight passengers on board.

Even in order to ensure that the car can meet the needs of long-term survival in the wild, Chen Xin also placed a five-layer 0.2m×0.6m planting box on the car, which can provide sufficient vegetables, with a large trunk at the rear of the car, enough food for six people to eat for a month without pressure.

And with this car, Chen Xin has enough confidence in being able to return to his hometown and pick up his parents.

He believes that with this car, he will be able to cope with the journey of more than 600 kilometers through four provinces and successfully pick up his parents.

Of course, the cost of rebuilding such a luxurious and high-performance armored RV is also extremely staggering.

If it weren't for the fact that Chen Xin had gathered a large number of raw materials through Li Yulong and transformed and processed a large number of parts by himself, the survival points required to upgrade such a car would be enough to upgrade a half-shelter as a whole.

Even with sufficient materials, the full 2,500 points of survival still made Chen Xin feel extremely painful.

But he gritted his teeth and put this survival point into it.

After all, this is the car that is going to be used to pick up his parents, and he is now afraid that there are still some shortcomings or loopholes in this car, which will not allow him to return to his hometown smoothly.

In addition, no matter how many resources and survival points are consumed, Chen Xin will be willing to give it up.

Now that such a car has finally been successfully upgraded, Chen Xin also feels that it is worth the money.

"It's finally done! Ah Xin, your hands-on ability is too strong! Ding Ning looked at the armored RV in front of him and felt amazed.

In the eyes of her and Qin Lan, this car was transformed bit by bit by the two of them with Chen Xin, so looking at the upgraded armored RV, whether it was Ding Ning or Qin Lan, they were inevitably a little excited.

However, in Chen Xin's opinion, this is inevitably a little inconsistent, but in order to avoid exposing his biggest secret, Chen Xin still said to Ding Ning and Qin Lan: "Thank you two for your help, if I don't have your help, I want to complete the transformation of this car alone, and I don't know how busy it will be." ”

"Ah Xin, you're polite, Ah Ning and I didn't do anything, we just gave you a little help, it's really nothing." Qin Lan shook her head, although she and Ding Ning did help a lot from her perspective, her personality made her not feel that she had done much.

Chen Xin didn't care about this, opened the door on the side of the car, put down the gangway to board the car, and said to the two: "Two beauties, do you want to go up and have a look together?" ”

Facing Chen Xin's invitation, as well as the powerful and domineering, but restrained heavy armored RV in front of them, Qin Lan and Ding Ning couldn't help but smile at each other after glancing at each other, and the two boarded the car together.

Because the car is in the middle of the body, when they get into the car, they are presented with a table and a circle of zigzag sofas around the table.

Chen Xin also got into the car at this time and introduced the two intimately: "This is the living area, you can usually sit here to eat or chat or something, the front is the cab, and the back is the bedroom, kitchen and bathroom." ”

While speaking, Chen Xin also lowered the table in the middle of the sofa, and explained to the two with a smile: "This table can be raised and lowered, and after it is lowered, it will be a double bed." ”

"Double bed?" Ding Ning looked at the table that had been lowered to the level of the sofa next to him, and couldn't help but say to Chen Xin: "It looks quite spacious, is it comfortable to sleep at night?" ”

"I don't know, I'll have to go to bed and try it." Regarding this question, Chen Xin could only smile and say that he didn't know.

More concerned about the living area than Ding Ning, Qin Lan took the initiative to walk forward, and entered the cab after passing through a passage less than half a meter long.

Chen Xin naturally followed, and saw that Qin Lan was very curious to look at the various equipment around the driver's seat, so he took the initiative to introduce them to her one by one.

Listening to Chen Xin's introduction of the radar, drone, and night vision devices equipped with this car, Qin Lan couldn't help but sigh: "It's still Ah Xin, you are amazing, this is already stronger than the armored vehicles used in our team." ”

"I can't help it! After all, I had to travel more than 600 kilometers through six provinces to pick up my parents, and if the car was not fully functional, I couldn't run such a long way and come back. Chen Xin can only say that this is a practical need.

However, after hearing Chen Xin's words, Qin Lan just looked at him and asked him a question: "Then Ah Xin, when are you going to leave and go back to your hometown to pick up your parents?" ”

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