Mars, the planet in the fourth orbit of the solar system, has a yellow surface, full of sand, thin air, and somewhat low gravity.

Dear passengers, welcome to this train,......

I, a space cop, was sent to Mars to investigate a missing person case. At first I refused, not because I was afraid of riding the space train, or because of how uncomfortable the sleeping pod was, but simply because I didn't like Mars. However, my commander told me that the task was simple and easy to complete, and that there would be a surprise when I returned. For the sake of my boss's always good face to me, I took it.

I sat in the sleeping pod, carefully checked all the instruments and data, and made sure that everything was safe, I slowly lay down, although there was a soft feeling behind me, I was still not steady, and I had to lie here for the next few months, not eating or drinking, no, I still had to drink, after all, some nutrition still had to be supplemented, and the most important thing was that I couldn't move freely, once I lay down, I had to wake up when I arrived at my destination, and if any accident happened during the period, you didn't have time to react, not to mention, You don't even know how you died.

My biggest fear was that someone would open my sleeping pod and beat me or kill me. I'm a nice person, but some criminals hate me the most.

Under the effect of hypnotic mist, I slowly fell asleep, and I wanted to have a sweet dream.

I don't know how long it took for me to wake up, or I was awakened to be exact.

I was very uncomfortable, tired, my mouth was very dry, my eyes were dry, I was about to open the lid of the sleeping pod, suddenly I heard gunshots outside, I quickly stopped what I was doing and listened carefully.

After listening for a while, I knew what was going on, it turned out that someone had carjacked a car.

Hey, how fresh! I just sat down and encountered this kind of thing, tell me how likely it is.

Suddenly, I heard the lid of the sleeping pod next to me open with a gasping sound, and someone opened the lid by themselves, and I thought to myself, it's over.

Sure enough, as soon as the man opened the lid, he saw a group of people with guns looking at him, and he shouted, Who are you? Then there was the sound of gunfire.

Damn, shoot if you don't agree with each other?

Then I just stood still and waited for them to leave, and then I went out to see, after all, I was awake now, and it was impossible to fall asleep again.

After a while, it seemed to be quiet outside, and I guessed they were gone, but I didn't dare to risk it, in case they just stood there and didn't speak, so I waited a little longer, for I had been waiting for a few hours anyway, not a few minutes.

While I waited, I made a plan that I would first find my gun, and my gun and other valuables were in a car in the middle of the train, where everyone's valuables were placed. And the carriage I'm in now is the third car, in the penultimate section of the train, and I have to walk through three cars to get to the seventh car in the middle, if I don't meet these robbers on the road, it's okay to say, if I do, I'll be in trouble.

Hopefully they're all on the other end of the train.

I gently opened the lid and let the gas release little by little so that it didn't make a big noise. My pants and gown were in a box underneath the sleeping pod. After getting dressed, I tiptoed to the door of the carriage and peeked inside.

Damn, there's one!

What can I do? One was left in the carriage. Round heads-up, that person is definitely not my opponent, I am afraid of not him alone, but the few who came later. There is no place to hide in such a cramped carriage. I can kill him, that's no problem, the point is that it will alarm the others, it will make them converge here, and then I will face a dozen heavily armed robbers by myself, and I will have nowhere to escape, and now I am in space between Earth and Mars.

I'm going to watch for a while to see if that person is communicating with the other person, and if there will be a call every few minutes. If so, I'll have to learn from him, and if not, it's easy.

Half an hour passed, and I found a pattern of communication between the person and the other people, as if they were talking every ten minutes, and each call was about safety.

At this point, only a minute had passed since his last call, and I was ready to make a move.

The door of the carriage opens and closes with a sound, which is the last thing I want to hear, so as not to startle the snake, I can only make some kind of regular sound to cover the sound of the door opening, but in order not to arouse the suspicion and attention of the person, I specially make some kind of mechanical sound.

The man looked back and looked over at first, thinking that someone might not have made it, so he didn't come to check it out, and continued to stand guard there.

I looked, hey, what a fool, my chance has come.

I crept up behind him, then suddenly reached out and covered his mouth with one hand, and pulled out the dagger he was equipped with the other, and then wiped it around his neck. I found a sleeping pod that had been opened and threw him in.

After cleaning up, I now have weapons, and I can take out them one by one, and when it comes to Mars, I'll be the hero who saved the whole train, and it's fun to think about it.

There is only one robber in the fourth car, which has been solved by me, and the next is the fifth car, I look inside, I go, there are two.

How to solve two at the same time, this is a science, not only requires agile reach, but also needs to have a very accurate grasp of time, plus a trace of luck in it, basically enough. But the result depends on your own performance.

The two robbers in car five, one looking at the front and the other at the back, changed again after a while.

So cautious? What can I do?

I continued to observe, to find out the pattern, and then to find a certain point in time, at which both of us were unguarded, and at the same time there was a blind spot.

I stared at it for a while, and finally I noticed that the pattern was that they would switch positions in about five minutes, and they would both keep their heads down when they changed positions, and that's when it was time to shoot.

But there was one downside, and that was that they were five or six meters away from the doorway, and it took them less than a second to change places. In other words, in a second, I'm going to open the door, run over, and kill them.

It's a little difficult for a second. It would take almost a second just to run over, and to kill them, it would be impossible to do it no matter how you look at it.

But who am I, I'm the police sprint champion! Who can compare to me when it comes to short-range bursts? Even the athletes who are a little bit worse are no match for me.

But if I start at the door of the carriage, I can't run five or six meters in a second, so I need to be faster.

I figured out a way I needed a run.

I came up with a plan. I'm going to run from one end of the carriage to the other and then open the door of the carriage, and I need to cross a distance of five or six meters in 0.5 seconds while they change positions, and then use the remaining half a second to finish off these two people.

The idea is good, but how well I actually do it depends on whether I am lucky enough or not.

I leaned close to this end of the carriage, looked at that end, took a deep breath, adjusted my mind and posture, I wanted to be distracted, I wanted to run over with all my strength, press the button to open the door the moment I approached the door, and then, no, I suddenly thought of a place that I had overlooked.

Door!

It also takes time from the time the button is pressed to the time the door opens! What's more, the door needs to be open big enough for me to pass through, at least 30 centimeters open, and the speed at which the door slides to the side is very slow, which is too slow for me who is in dire need of time at the moment.

From the moment the door opens to the opening of a thirty-centimeter-wide opening, it takes about 0.6 to 0.8 seconds.

It's even harder now, it will take time to open the door, what can I do?

By the time I got to the door, it had already opened a crack that allowed me to pass through. And how can this be done?

Pregnant!

I can throw the bullet out and hit the button when I run, and I'll keep running without slowing down, and by the time I get to this door, it's already open! Ah, that's a good idea!

Now there's another problem, where exactly do I have to throw bullets?

I measured the length of the car with my foot, it was between fifteen and sixteen meters, and it would take me about two seconds to cover this distance, and I was about eight meters away from the door before I reached the door. Eight meters, I measured the length of eight meters and made a mark to remind myself that I was going to throw a bullet when I ran here.

I replayed the process over and over again in my head, and after making sure there were no oversights, I decided to take a chance.

Success or not, there is only one chance.

At this point, I don't think about the bad consequences, I believe in myself.

I closed my eyes and prayed that I would make it.

The distance of more than ten meters is only a matter of seconds for me.

I ran, and at this point I had no distractions, and I had a bullet in my hand, and I just wanted to throw it at the marker, and then I ran over and killed the two.

Syllable!

The bullet hit that button accurately.

Click!

The door is open!

As I crossed the door, I saw that the two men had begun to change positions, and when I quickly drew my dagger and ran to them, they saw me too, and before I could speak, I slashed hard, almost simultaneously through their necks.

The two men clutched their necks at the same time, and fell to the ground with two convulsions.

Whew, finally succeeded!

The equipment on these two men was the same as the one in the previous carriage, a dagger and a rifle, no other weapons, very shabby.

I can't use a gun because it makes a sound, that's one, and two, if I accidentally break the train compartment and there's still a vacuum outside, that's the end of it.

Pick up two daggers, I'm rich now, at least I can use one dagger as a dart.

After a short break, I was ready to go to the next car, but I saw something even more terrifying, there were three more here!

Oh my God, it's going to kill you!

It's a lot of effort to get these two out, and three more?

I was a little desperate, feeling that it was impossible not to get the attention of the other robbers, because I couldn't solve all three at the same time in a short period of time.

I leaned against the wall of the carriage and looked out at the dark universe through the window, at this time I was alone, not only physically and mentally exhausted, but also a little hungry because I had not eaten or drunk for a long time, and I felt that I was not far from the symptoms of hypoglycemia.

So, I started rummaging through the carriage to see if I had anything to eat or drink. However, after looking for a long time, there is nothing, nothing.

The length of one sleeping pod is 2.5 meters, and one carriage is equipped with twelve sleeping pods.

Of the twelve sleeping pods in this carriage, five have been opened, and the remaining seven have not been opened, and there are still people sleeping inside. Of the five that were opened, three bodies lay inside, and the other two were empty.

Two of the three had corpses, and I put the two I had just killed.

I'd like to look in the sleep pod to see if there's any leftovers, and if there is, I wouldn't mind drinking it directly.

My luck was good, and I really found two tubes of half-used nutrient solution, and I opened it and drank it without saying a word.

The taste of the green nutrient solution is very bad, and the strong medicinal smell is endless. I guess I'm the first person who dares to drink the nutrient solution directly through my mouth.

After drinking two tubes of nutrient solution, I felt that my body had more strength and was ready for the next action.

Now I have three daggers, and it's no problem to pick three at a time.

I don't think about it anymore, if it does, what if it does?

I opened the door and walked inside.

Just as the three men turned, I threw the dagger out of my hand, and the dagger plunged straight into the chest of one of them. Then I walked up with a dagger in both hands.

The two robbers who were still standing were about to open fire on me, so I glanced at the sleeping pod that was open next to me and quickly got in.

The cover of the sleeping pod is very strong, at least bulletproof, and it is not known whether it is bombproof or not.

There was a burst of gunfire, and countless bullets hit the protective cover of the sleeping pod, leaving no scratches at all.

Taking advantage of the opportunity for the two men to change ammunition, I rushed out and cut off both heads at the same time with a sliding step, and the whole process was done in one go.

And I hadn't been in a handsome pose for long when I heard someone in the carriage in front of me shouting and running, I should have heard gunshots.

I quickly found an open and unmanned sleeping pod and lay in, and the moment the shield was closed, those people ran in, only to see three bodies lying on the ground, and no murderer in sight.

I was lying in my sleeping pod, complacent, when someone knocked on the shield of my sleeping pod.

I closed my eyes tightly and pretended to be asleep.

Hey, buddy, you're lying in my sleeping pod.

As soon as I listened, really? Then I thought, are you cheating on me? No, I can't open my eyes.

The guy outside knocked and found that I was unmoved.

Hey, I said, did you kill the three robbers here? If so, it would be great, we need the help of the righteous! If you don't mind, just join us, right?

Well? It's true?

I was still wondering if he was telling the truth, when the protective shield of the sleeping pod was opened from the outside.

Ahem, what, you can wake up, don't pretend anymore.

I first opened my left eye and saw a man looking at me with a smile.

Later, I realized that I was not the only one on the train who was killing the robbers.

It didn't take long for all the robbers on the train to be subdued, and it was almost to Mars by then.

As for going to Mars to investigate the disappearance of people, what's interesting on the train?

Finish.