Chen Xin has little to do with other people's lives. What he needs to worry about now is his own life.

Chen Xin's original plan to upgrade the shelter was also affected by this incident. Chen Xin's original plan to collect materials through Li Yulong's trading market was temporarily destroyed with the suspension of the trading market and the plantation. In the short term, the material trading on the side of the SWAT team will not be able to do so.

After all, the trading market project has been suspended, and the special police force has to put the police force into the investigation of this incident. The material transaction with Chen Xin can only be maintained in the exchange of basic living materials.

This makes it impossible for Chen Xin's original refuge upgrade plan to continue in a short time.

Although the survival settlement has been made after the ground source heat pump unit on the side of the special police team has run smoothly, which makes the survival reserve of Chen Xin's head close to five figures, and the daily survival has also exceeded 100. As long as he has accumulated more time, it will be enough to upgrade the refuge with survival, but Chen Xin still doesn't want to upgrade in this way.

On the one hand, it costs too much, on the other hand, a single upgrade scheme can not meet the needs of Chen Xin.

During the settlement of survival on the other side of the SWAT team, Chen Xin also found out that according to the rules set by the system, the maximum survival he can obtain at a single refuge or settlement is 5000 points, and the maximum daily survival he can obtain at a time is 50 points.

This obviously limits Chen Xin's idea of quickly obtaining a large number of survival points in a short time, and then directly upgrading the refuge with survival points.

Maybe you can choose an upgrade scheme first, and then make subsequent adjustments, but if you can, Chen Xin still hopes to upgrade the whole refuge at one time.

Therefore, because of the shortage of materials, Chen Xin had to shelve his plan to upgrade the refuge and put his energy on other things.

For example, the upgrading of their own cars.

In recent days, he frequently goes to and from the urban area to deliver meals to Qin LAN. With the increasing demand for cars, Chen Xin also has more requirements for his own car. Therefore, upgrading the car has become his immediate priority.

However, this is not a big impact. After all, the vehicle renovation was the top priority in his priority list. Now it's just a move back on the overall upgrade of the refuge, making it the top priority.

Previously, in order to go out, Chen Xin had upgraded the wheels to improve the traffic capacity of the tires on the snow road.

But this is only the most basic upgrade, and can't change the vehicle performance completely.

Although it is enough in the current situation, Chen Xin wants more.

In the past, the modification of the tire only made the ordinary snow tire more grip, and adjusted the chassis height and suspension system. But if you want to continue to improve the performance and ride comfort, you must upgrade more things.

For example, the structure of the chassis.

Now Chen Xin's car is still a wheeled chassis, with the advantages of low fuel consumption, light weight and good mobility, but its traffic capacity is worse than that of a tracked chassis.

Although the crawler chassis is more bulky and has higher fuel consumption, it has stronger carrying capacity and can drag a heavier car body.

And the driving force of the crawler chassis is larger, and the ground pressure is smaller, so the off-road performance and stability are good, and the climbing ability is large, which is more suitable for the traffic under the complex road conditions of the wild ups and downs.

Especially when driving in the snow, the wheel chassis is prone to tire falling into the snow, while the track does not have such trouble. The track with larger grounding area can make the vehicle run smoothly on the snow surface, without causing the wheel falling into the snow.

Therefore, for Chen Xin, he would like to replace the chassis of the SUV with crawler, and upgrade it from SUV to ATV.

However, tracked chassis has many advantages, but energy consumption is a key point that Chen Xin can't avoid. After all, there is no engine with high horsepower that can't move the tracked chassis forward, and high horsepower also means high fuel consumption.

"So we have to go around nuclear power." Chen Xin looked at the design sketch he had painted on his computer and felt that he still wanted to give nuclear power to his car.

Because only nuclear power can meet his needs. After all, if the crawler chassis is replaced, the fuel consumption is also amazing.

As for nuclear power, it's not high technology. Although many people talk about nuclear discoloration and directly associate nuclear with radiation, they always think it's very dangerous. However, we have to say that with the current level of human science and technology, we can use nuclear energy cleanly and efficiently.

Moreover, the sustainability and stability of this kind of thing are also very reliable. The nuclear power lighthouse built in the pre sovya era is still in operation today, but the radiation leakage only occurs due to the long-term lack of maintenance and aging of the equipment.

Therefore, in history, those who failed to make a decision on nuclear bombs not only made nuclear powered tanks, which are four track monsters, but also used nuclear bombs to repair reservoirs and plug oil field fires.And it's not complicated to put nuclear power on the vehicle, just need a radioisotope thermoelectric generator.

The principle of this kind of thing is to use the radiation with heat energy released by radioactive substances in the decay process to convert heat energy into electric energy in thermoelectric elements.

Radioactive materials are very stable in the decay process, and the released energy and speed are not affected by the temperature, chemical reaction, pressure and electromagnetic field in the external environment. Therefore, radioisotope thermoelectric generator is famous for its strong anti-interference and accurate and reliable operation.

Another characteristic is that the transmutation time is very long, which determines that the nuclear battery can be used for a long time.

Of course, Chen Xin doesn't have a nuclear battery in his hand, and he has no place to buy it, but he has a system, which means he can upgrade himself.

If you want to make a nuclear cell, you need to make a long half-life isotope into a charge, and then wrap it with thermoelectric elements. For safety reasons, you may also wrap it with a layer of lead to prevent radiation leakage.

But the upgrade of the system is not so troublesome. Chen Xin only needs to prepare long half-life isotopic materials, thermoelectric components and lead to upgrade the car battery on his SUV to a nuclear battery.

Of course, without these things, it's no problem to upgrade directly with survival points.

After carefully considering various advantages and disadvantages, Chen Xin decided to upgrade a nuclear battery directly from the survival point, and then consider the issue of obtaining isotopic materials.

After all, isotopes are controlled materials in Yanguo. They are not as easy to get as thermoelectric elements and lead. He can't get them directly.

However, if there is a nuclear cell as a sample and says that he can make a nuclear cell, Chen Xin still hopes to get some isotopic materials.

Thinking of this, Chen Xin picked up a wrench and a driver from the workbench and decided to first remove the car battery from his car and upgrade it to a nuclear battery.

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