371st Martian Day.

This is my first time writing a log.

Watney suggested, he said, if you feel too lonely, keep a journal of your daily life.

I think it's okay to give it a try.

I made two breakfasts in the morning and I realized that Watney was gone. Even though I knew he was still on this planet, I always felt empty in my heart.

For me, from the moment he left the Asidalia Plains perch, I was the only one left on Mars, and I had to spend at least 1,500 days and nights on this desolate and lonely planet.

I thought I was mentally prepared for this.

But when the moment actually came, I realized how uncomfortable it was.

Yesterday after Watney left, I sat outside the perch for a day, and returned to the perch to replace a carbon dioxide filter.

Then continue to the outside of the cabin, looking at this desolate world in a daze.

When I returned to the perching cabin at night, I could feel Tian Mu's roaring saliva through the computer screen.

I'm sorry, but I'll be willful today.

After all, human beings are social animals, and loneliness is the natural enemy of human beings.

This is a sentence that a senior sister who studied philosophy once said to me when I was in college.

At that time, I didn't quite understand it, because I rejected her pursuit, and I thought that a person with math could live a very happy life, and that having a girlfriend would be a lot more troublesome.

Now I realize that I was wrong, although I used to be accompanied by math, I at least had tutors, classmates, family and friends, and maintained the most basic social networking.

But on this planet, it's just me.

The only friend, Watney, is gone.

For me, Watney is a lifelong friend, a comrade-in-arms, a brother who can give his back to the other person, and this is the first time I've made such a friend when I'm so old.

Have a good trip to him!

……

378th Martian Day.

Over the course of a week, I've gotten used to living alone on Mars.

Without Watney, those lovely tomato vines and potato seedlings would have taken care of the carbon dioxide I breathed, and they even helped me save a lot of oxygen through photosynthesis.

I work every day to check the working status of various equipment, record the data of potatoes and tomatoes, weigh myself, and then arrange my diet according to the dietitian's recipe.

Occasionally, the Ares Command would arrange for me to go on some simple scientific expeditions.

Overall, the workload is a lot bigger than when Watney was there, but I've worked out, and after more than a year of living on Mars, I feel that my hands-on ability has been greatly improved.

Watney's journey was not smooth, he had only walked less than 400 kilometers in seven days, and once he had gone in the wrong direction and could not find the indicative landmarks on the map.

Luckily, Venkart told me, Watney later seemed to realize his mistake and re-routed.

I wish him all the best.

……

398th Martian Day.

Last night was another night of sandstorms, close to 100kph wind speed, the No. 1 exit where the air explosion occurred was purely supported by the MDV parachute canvas, and the strong wind blew me all night without sleeping, for fear that the parachute canvas did not stand the test.

As it turned out, I thought too much, and this thing was not in the sturdiness of the pod in the sturdiness.

After a busy day outside, I cleaned the sand and dust from the solar cells and checked the status of the perch.

The roosting cabin as a whole is ok, nothing is a big problem.

But the data shows that the photoelectric conversion efficiency of solar cells is gradually declining, which is an inevitable problem, but fortunately, Tian Mu said that there are many new solar panels in the supply tank.

Hope the resupply mission goes well.

……

410th Martian day.

Two good news were heard today, Watney is only 1,200 kilometers away from the Schiaparelli crater, and if it goes well, he will be able to reach the Schiaparelli crater in a dozen days.

The second piece of good news is that the second supply spacecraft will be launched from the French Guiana Space Center on an Ariane 8 rocket, and it will arrive on Mars on the 860th solar day and land on the plains of Achidaria.

The consignment, which is more than 20 tons, will be made with a soft landing using a rocket engine to ensure that the supplies are not damaged.

Not only did it contain a lot of food, but they even packed a new 80-square-meter living pod.

Then I can expand my home.

……

448th Martian Day.

Watney arrived at the Schiaparelli crater five days earlier and found the MAV standing there for Ares IV.

But his test has only just begun.

The speed and altitude at which Hermes cut into the orbit of Mars exceeded the limits of the MAV, and Watney had to remove a lot of equipment from the MAV, and even the portholes and fairings were removed by him.

Haha, he's going to go into space on an open-top spaceship.

It was a heart-wrenching adventure.

Fortunately, his protagonist aura is still there.

He did it.

Hermes' teammates had the courage to bring Watney back to Hermes.

At the same time, Hermes also successfully released the supply module of the cargo spacecraft "Glutton" to Mars.

Project Ares command was pretty reliable, the supply pod landed on a desert 60 kilometers away from the perch, and it took me three days to tow it back.

The materials inside were surprisingly well preserved, and even the delicate oxygenator molecular sieve material was intact.

This is thanks to the flexible metamaterial aerogel of the supply tank.

The cabin made of this material is insulated and insulated, soft to the touch, but extremely strong and lightweight, making it an excellent material for spacecraft.

According to the information I got from Tian Mukou, this flexible metamaterial aerogel will become one of the main structural materials of the next generation of spacecraft.

Hopefully, I'll have this in my reward when I'm done with the mission.

Watney is finally gone.

This time, I'm the only human left on Mars.

……

468th Martian Day.

The past twenty days have been extremely busy, with the arrival of the supply ship coinciding with the ripening of the potatoes for the fifth season.

I had to deal with the potato issue first.

Germination, harvesting, fertilization, freezing and replanting.

With Watney's cultivation and the blessing of my own racial gifts, I became a qualified Martian farmer.

At the same time, I also repaired the oxygenator, and I was teary-eyed when the blades of the oxygenator compressor made a slight roar again.

That's what almost left Watney and me dead on Mars.

In the period that followed, I replaced parts of some of the equipment with supplies and carried out extensive maintenance of the perching chamber.

Or, for some of the perched cabins that are at risk of aging, the carbon fiber canvas material is patched.

And the abundance of food has finally allowed me to get rid of the potato ketchup, and while the taste of the space food is still not very good, my taste buds tell me that they are happy.

During this time, every crew member of the Hermes and Watney sent me an e-mail, they apologized to me for not being able to take me home with them, and I sent an e-mail back to each of them, although I had not seen anyone but Watney, but I could feel their friendship.

Thank you, my comrades-in-arms!

……

500th Martian Day.

I found that I was lazy, with plenty of food, plenty of supplies, no need to worry about sudden death, and no need to carry out EVA missions every day.

But it's still two years before the launch of the Ares 4 spacecraft, and a thousand Martian days before they take me home.

It was a boring time.

I decided to continue working on the ABC conjecture.

Fortunately, this world is also expected to be a new paper.

Unfortunately, no one has read his thesis to this day, and his generalized Taishmüller theory has not been verified.

The ABC conjecture has become one of the world's seven math problems of the new generation.

I decided to study his paper, and if I could find the errors in his paper, it would be enough for me to go back to the real world and water a top issue.

I commissioned Tian Mu to find his paper from the pile of old papers and send it to my computer.

I'm going to start researching.

This is a new beginning for my life on Mars.

Good night!