Chapter 191

When Chen Xin was thinking about how to make snow crawler wheels, the atmosphere in the city became increasingly tense.

Although the surface is calm, but in fact, under the surface of calm is ready to start the huge waves.

At the gates of the major shelters, there are tight sentries set up by the city government's management personnel, police and armed police forces to strictly check everyone who comes in and out.

The management personnel are responsible for the identity examination to ensure that the identity of each person who passes through the gate of the refuge is well documented and has the residence certificate and pass issued by the city government.

This is a management system implemented after the disaster. Although there was a pass and residence permit system before, the control was not very strict. Just like the ID card before the disaster, many people would not even take it with them. However, if we want to strictly check it, everyone must have it and be able to match the number.

On the other hand, the police are responsible for security inspection to ensure that people entering and leaving the refuge do not carry dangerous goods or contraband. The armed police are responsible for maintaining the order of the scene. Suspicious elements are handed over to the police for arrest and detention. Criminals with the intention of sabotage or making trouble are arrested by the armed police, and the Protestant clergy can be directly killed.

Under the close cooperation of the three, although we dare not say that there is no leakage, at least on the surface, it looks orderly, and criminals with ulterior motives can never fish in troubled waters.

Most shelters are so tightly guarded, especially the one where the city government is located.

As the current office location of the city government, it is also the residence of the joint investigation team. The soldiers of the joint investigation team from Star City are stationed here, so that the examination and defense at the gate of the city government is one level higher than other shelters, even if there are no flies now.

However, despite the strict examination of entering and leaving the shelter, it is relatively easy and simple if you don't come out and just stand at the gate of the shelter and smoke.

Because the shelter is closed inside, it's very troublesome to want to smoke.

After all, smoking in a closed environment, if the smoke can not disperse, it will leave a very bad smell, and smoking in the shelter is also easy to cause fire and other safety hazards.

Therefore, smoking inside the refuge is prohibited, but cigarettes themselves are not. It's just that if you want to smoke, you need to come to the entrance of the refuge and smoke in a place with good ventilation.

Considering the pressure of life in the doomsday environment and the fact that there are more people who are addicted to smoking, each shelter has designated a small area at the door as a smoking place.

It's just that the so-called smoking place is just a corner where the wind blows. Although there is no cold wind rolling up the ice and snow and slapping it on the face, standing for a cigarette is basically the limit. If you stand in this place for a long time, your feet will not lose consciousness, but will be frozen in the physical sense.

But for smokers, it's also a very rare enjoyment to smoke a cigarette in the current environment. Although cigarettes are very expensive, they need to spend a lot of food and materials on the black market, or they have enough contribution and work points to get a very rare package from the materials issued by the shelters every month.

The same is true for the officials who have just held a meeting in the city government, especially for the boredom and brain drain brought by the long meeting. A cigarette can really refresh the mind.

Although as the management, they are not lack of tobacco, but they still have to abide by the regulations to come to the smoking place at the door.

Because the smoking place is located in the gate of the checkpoint, the police and the armed police in charge of the inspection only look this way, and they don't pay much attention to it, and the staff are even less likely to offend their superiors.

As a result, a few more smokers stood at the gate of the city government shelter.

"Fortunately, I still have a cigarette here, otherwise I can't stand the continuous meeting." It was a slightly rich official who spoke with a little star city accent, indicating that he came from the provincial capital.

On the side, a city official who was also smoking couldn't help echoing: "who said no! Now in this kind of environment, we can still have a few cigarettes to smoke, otherwise people can't bear the addiction. "

Several officials came out to smoke during the break of the meeting. At this time, they didn't care about their identity or the difference between the provincial government and the municipal government. What they chatted about were also topics related to smoking.

However, the time for a cigarette to burn was not long, and the break between meetings was also not long. Soon several people finished their cigarettes and were ready to avoid the difficulty and continue the meeting.

Only one of them fell behind and didn't seem to want to go in.

This behavior naturally attracted other people's attention. One of the officials asked, "Secretary Li, don't you go in yet?"

"I'll finish this cigarette before I go in." The yelled man raised his hand and only smoked half of his cigarette, and laughed.

Naturally, the person who asked him understood very well that a cigarette is very valuable now. It's impossible to put it out after half of it.

Other officials did not ask much. A group of people who had finished smoking went back to the shelter, leaving only Secretary Li, who was still smoking.But half a cigarette is also very short. When the others are almost gone, Secretary Li's cigarette is almost finished.

After the last two puffs, he threw the cigarette end into the garbage can.

Just when Secretary Li wanted to go back, he found that the shoelaces on his feet were loose, so he squatted down and tied them again.

When Secretary Li finished tying his shoelaces, he stood up and went to the shelter. When he met the cleaner who came to clean up, he nodded politely and said hello.

The cleaner also politely greets Secretary Li. After he passes, he comes to the smoking place where a group of officials have just smoked, sweeps the cigarette ends on the ground, and empties the things in the garbage can into his own bag.

There is nothing suspicious about this, so the police and armed police at the gate did not pay attention to this side. They paid more attention to the outside of the shelter and watched everyone in and out of the shelter warily.

However, no one noticed that when the sanitation worker put the garbage can back, he had a note in his hand.

The sanitation worker cleaned up the ground and then walked back to the shelter with his bag full of garbage.

In Chen Xin's shelter, Chen Xin soon finished the design of snow crawler wheels.

The connection between the snow track wheel and the wheel is still a problem, but after some consideration, Chen Xin decided to add a chain on the bottom of the car and a fixing rod on the wheel hub to increase the fixing points. In addition, the clips on the wheel are used to fix the snow track wheel on the wheel, so as not to slip.

As for no need, it's easy to remove it. Just untie the fixing rod on the wheel hub and the chain under the car, fix the snow track wheel, and pull the wheel out of the snow track wheel.

Looking at his drawings, Chen Xin feels that they should not be much different from the original. Even if there are some differences in structure and details, they are small things.

The next problem, of course, is how to make it. Naturally, parts processing is not a problem. With the existence of a system, Chen Xin can easily get the parts he wants, but he still can't make shoes without rubber.

Rubber is a very common industrial material before the disaster, and all kinds of rubber products are also full of people's lives.

As an important industrial raw material, whether it is natural rubber from Southeast Asia or chemical rubber obtained through petrochemical technology, it is very easy to obtain before the disaster.

Unfortunately, after the disaster, it is difficult to get rubber.

In addition to the rubber raw materials left before the disaster, natural rubber is estimated to be gone. After all, even if those rubber trees have not been burned, now that the world has entered the ice age, those rubber trees have lost their growing environment, and no one is going to cut rubber.

However, chemical rubber should be produced in the country. After all, it is a very important industrial raw material and should be used in all aspects. Even if the quality of chemical rubber is not as good as that of natural rubber, it is impossible to build a special greenhouse to grow rubber in today's environment.

According to Chen Xin's estimation, the state should have preserved some industrial facilities and oil wells before the disaster. Relying on these preserved industrial facilities, production should have resumed after a little half a year.

But now the transportation is in a state of half cut off, only railway transportation can go, the entire road network is almost paralyzed, even if the rubber is produced, it will be transported to the most needed place, and will not waste valuable production capacity and transport capacity to this city, which is a non key industrial city.

Although there are many large-scale chemical plants in the city, which are important industrial production enterprises, in the previous disaster, the chemical plants around the city have been affected by the fire, and it is difficult to count how many equipment can survive.

After all, the chemical plant itself is a flammable and explosive place. For Chen Xin, who grew up in the chemical plant, this can be said to be a familiar thing.

Therefore, the industrial base of the city is almost gone now. Only the factory area under the jurisdiction of the city government can produce some materials needed for various shelters. Chen Xin can't get these products without chemical rubber.

So if Chen Xin wants to use rubber tracks, the only way is to get the rubber products that were left before the disaster, and use the system function to extract rubber that can be used as raw materials.

And the most suitable rubber products, of course, are tires.

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