Doomsday Bunker Upgrade

Although the crawler-type chassis has many advantages, it is also more suitable for advancing in snow, but the biggest problem of the crawler compared to the wheel is that the speed is not fast enough.

In addition, the car itself is already heavy enough, and the top speed it can run is only 80 kilometers per hour. Even if Chen Xin overloads the engine, he can only run it to 160 with twice the electric energy.

The overload mode is used in emergencies. Chen Xin cannot easily turn it on, and after the overload mode is turned on, it will cause a huge loss to the track, engine, transmission, and even the car body itself, and it will not last at all.

Moreover, the theoretical maximum speed at that time could only be achieved by running a straight line on a flat and unobstructed road surface. With the current complex road conditions and poor line of sight, Chen Xin’s current speed is only 15 kilometers per hour. , and this is just the speed of the car, not the speed at which he travels on the map.

After all, in this environment, the original roads are buried under the snow that is more than one meter deep, and the surrounding environment has long since changed beyond recognition. position, while waiting for the drone and radar to scan the surrounding traffic information, and then decide how to move forward.

Sometimes the straight line is only 100 meters, but because there is a big crater hit by a meteorite in the middle of the road, if you want to go around, you have to walk a few hundred meters, and this detour will naturally take a lot of time.

So it seems that the speed of 15 kilometers per hour is actually very rare on the map to be able to travel 10 kilometers per hour.

"Is there another crater? This is the first time I've encountered it today?" Chen Xin couldn't help complaining. Through radar and drone scanning, there was another crater on the road ahead with a diameter of more than 50 meters. , forcing him to take a detour.

Although it is said that the off-road performance of the track is good, and it is not impossible to drive down the pit to climb directly, but if there is a flat road, Chen Xin still does not want to climb the pit.

During this section of the road, Chen Xin has not let the operating system drive automatically, but is holding the steering wheel and moving forward carefully.

Although self-driving is easy, the intelligence level of the operating system installed by Chen Xin in the car is not high enough. The recognition of road conditions and route planning are only necessary for the car to pass, so yesterday when Chen Xin let it drive automatically, he rushed into it several times. in the crater on the way.

Although relying on the climbing performance of the vehicle itself, these craters could not hinder Chen Xin's progress after being covered with snow, but for Chen Xin sitting in the car, the bumps caused by the vehicle climbing the craters were too uncomfortable.

If he could, he would rather take a detour a little further and walk as flat as possible.

But when it comes to craters, I don't think that when I was at home, although there were houses destroyed by meteorites in the urban area, craters were not too common.

But after coming out, Chen Xin found that there were still quite a few craters on the road. On average, he could encounter a crater after walking for about an hour or two.

Most of these craters range in diameter from tens of meters to hundreds of meters, and most of them are formed by falling meteorite debris.

In order to prevent the meteorite from falling to Blue Star, Lucia guided the nuclear bomb launched by Wuchang to bombard the meteorite. Although it did not completely smash the meteorite, it also blasted down a lot of debris.

These debris did not fall directly to the surface of the blue star, but temporarily floated in low-Earth orbit, just like the space junk around the blue star.

Some of them will gradually fall to the surface over time, and some will float forever in low-Earth orbit, while the debris falling on the surface of the blue star is burned by the atmosphere, and most of them are in the sky. burnt out.

Even the debris that can fall to the surface is not large, and the craters caused by the fall are only such "small craters" of about tens of meters to hundreds of meters.

In fact, since the meteorite hit the Blue Star, the dust formed by the meteorite impact has continued to fall in the sky for more than half a year. Over time, more and more dust falls, and sunlight will eventually penetrate the clouds.

It's just that this time may be very long, and the surface can only be restored to a low-light environment in a short period of time, rather than the current lightless environment.

If the earth's surface can be restored to a low-light environment, then the living conditions of human beings should be improved, right?

Chen Xin took control of the steering wheel, and after bypassing the crater, he switched to the automatic driving mode again, and he thought about this problem himself.

Sunlight is extremely important for human beings and life on the surface. It can be said that only sunlight can have life.

Compared with the cold, the lack of sunlight is the biggest problem. After all, in the past on the Blue Star, there was no shortage of winter temperatures that would drop to minus sixty or seventy degrees, but even in the cold Siberia, there were dense forests. Existence, so cold does not cause the extinction of life.

But without sunlight, the vast majority of life cannot survive.

Therefore, if the surface can be restored to a low-light environment, Chen Xin believes that even if the surface is covered by low temperatures of minus tens of degrees and ice and snow, there will still be traces of life slowly recovering.

It's just that the recovery process will be very long, long enough to use a hundred years as a unit of calculation.

In the history of Blue Star, it is not uncommon for the entire ecosystem to be destroyed and species to be nearly wiped out. Even now, the global temperature drops to several tens of degrees below zero. This is a very cold climate stage. Scientists call it the Ice Age.

Two of the most famous ice ages have occurred on the Blue Star.

One occurred in the Pleistocene epoch about 1 million years ago, when humans were just beginning to evolve, as the blue star's orbit around the sun changed and the continental margins along the entire North Atlantic coast were covered with thick layers of ice.

Another time around 21,000 years ago, most of North America and Europe was covered with ice up to 2 kilometers thick and caused sea levels to drop by as much as 120 meters. This time, the most brutal ice age in 500 million years has affected at least 30% of the surface of the Blue Star.

However, neither of these two ice ages was more dramatic and cruel than the global ice age events that occurred between 800 million and 550 million years ago.

Between about 800 million and 550 million years ago, the surface of the blue star was completely frozen from the poles to the equator, and only a small amount of liquid water remained on the seafloor. At that time, the entire blue star was completely frozen, which was dubbed "snowball" by scientists Blue Star".

As for the reasons for the formation of the "Snowball Blue Star", there are many reasons for the formation of the "snowball blue star".

But no matter what the cause of the "Snowball Blue Star" was, the surface of the blue star at that time was completely covered by a thick layer of ice, only the ice layer in the equatorial region was slightly thinner, maybe only a few meters thick.

Therefore, for Blue Star itself, the extremely cold climate is not a problem, and for life, this does not make it completely extinct.

It's just that for humans and other creatures living on the surface of the blue star, this is a natural disaster that can wipe out everything.

Today, the surface of the blue star is rapidly cooling due to the shading of sunlight. In addition, a large amount of surface water has been evaporated by the meteorite impact. Under the influence of the two phases, the surface has been covered by ice and snow. very similar.

In such a cold environment, even the oceans would freeze, and before the dust cleared and the sunlight re-illuminated the blue star's surface, the entire planet had been frozen into a snowball.

That is to say, even if the normal light is restored, it is still difficult for the temperature to rise under the reflection of the ice and snow on the surface. The extremely cold weather may last for a long time, and this is very long, and the Blue Star itself is used as a reference. .

"This is really unhappy!" Although it makes no difference to Chen Xin whether the extremely cold winter lasts for a hundred years or a million years, it is still difficult for people to have a good mood. reality.

The long night may pass quickly, but the cold will not.

Humans want to see spring flowers blooming again, maybe it will be a long time later.

Perhaps human beings can relive the old days by building greenhouses, but it will be a very long wait to see green mountains, green waters, blue sky and white clouds again.

However, even if you think deeply about such things, it should be the work of scientists, but for Chen Xin himself, it has no meaning.

Maybe in the future, he can use the power of the system to create a planetary modifier, transform the planetary environment, let the ice and snow of Blue Star melt in advance, and the environment will return to the disaster, and even directly transform the Blue Star into the Gaia planet, but this is all in the future. .

For Chen Xin now, it is more practical to think about where to rest at night.

Taking a look at the map on the console and the records on the display, Chen Xin's driving mileage today is about 150 kilometers, but the straight-line moving distance on the map is less than 40 kilometers. It can be said that he has not walked out. How far.

The main reason why he only walked more than 40 kilometers in a straight line is that Chen Xin encountered the damage of the viaduct on the expressway section, so he had to turn back a long way before he got off the expressway and bypassed the damaged road. section.

And this detour will undoubtedly delay him a lot of time. If there is no detour, according to Chen Xin's estimation, he should have walked ten kilometers more in a straight line today.

However, in Chen Xin's view, he is not afraid of being slow, but he is afraid of not being able to walk.

As long as you can move forward, you will get there if you walk slowly, but if the road doesn't work, that's the most troublesome thing.

After driving the car to a windy depression, parked and put down the eight hoes at the bottom of the car, and after fixing the chassis and body as much as possible, Chen Xin left the cab and came to the living cabin, planning to give himself make dinner.

The CAD plan of the shelter has come out. It cost someone 100 yuan to make it in a certain treasure, but it seems to be rough. I am not very satisfied with it. Let's make it.