On October 2, 2023, 1,824 days before the contact, when I returned to the class after shooting the target at the training ground, I happened to encounter the good news broadcast on TV, "The test flight of mankind's first space warship was successful!" "Everyone around cheered that we finally had a space ship. Finally one step closer to victory and hope.

Today, the school specially approved that each of our students can drink a can of beer as a celebration.

In the evening, my parents also called, and their words were full of excitement, saying, "Haha, our spaceship has finally been built, and the earth has been saved!" "I cater to my dad too" Great! "Actually, I want to say "I miss you" every year, I can see you on two days of family leave, and every time we meet, you tell me how the underground facility is repaired, and even if we can't beat the aliens in the future, we can live in it. Mom is okay, every time she asks me this and that, 5 years have passed, and the gray hair on their head has also begun to appear.

Okay, I don't want to, I'll work out tomorrow, and my parents will rely on me to protect me in the future.

On August 8, 2025, there are still 1148 days left before contact, the weather is getting hotter and hotter, and we still have to insist on exercising at the training ground every day. When I returned to my bedroom at night, I heard good news on TV: "WSA has developed a tenth-speed light engine, and we are getting stronger and stronger!" Although I was very happy in my heart, I was also a little numb.

These two years. The whole planet is like eating hormones, every day there is a new breakthrough, and good news is coming all the time.

In the past two years, a front-line combat readiness base has also been established on the moon, the earth's spacecraft fleet has also reached 10 sorties, an armed space station and a spacecraft docking port have also been established around the earth, and artificial medical warehouses have also been realized, and there are too many, as if hundreds of years of development have been realized by us in a few years.

Some time ago, my father also told me that the facilities 100 meters underground are almost built, and even if we can't launch a nuclear bomb in the future, we humans can survive, and all kinds of underground circulation facilities, energy, and even separate farms have been opened up in each facility, and you can completely wait underground until the radiation cloud dissipates and the ground radiation is reduced to be able to survive.

If this development continues, no matter how powerful the aliens are, they will be defeated by us humans. After the diary was written, it was still so difficult to sleep without my little bear at school, especially in the dormitory.

On September 1, 2026, 759 days before contact, I received a call from my father today that the underground facilities in our city will be repaired soon, which can accommodate 30 million people. Oh, my God! That's a big project, and it's done.

Dad said that they now have a new job, to build the base of the elevator in the ground and space, and then the sky ship will be built directly in low earth orbit, and there is no need to spend extra energy to transport the large spacecraft up, only need to send the materials up through the space elevator.

I told my dad to take care of himself because I was leaving school and going straight into the army.

On September 8, 2026, there are still 752 days left before the contact, and today I went to the army to report on the first day, only to find that it was completely different from what I imagined in the comic books.

Since the beginning of the "Mirror Age", the old naval, land and air force units have been gradually abolished. All of them have been renovated into four combined arms: the Space Force, the Space Station Force, the Ground-Sea-to-Air Force, and the Standing Ground Defense Force, which are all under the management of the World Government.

All imaginary enemies are spacecraft attacks, and in 2026, the thinking of the entire space defense has been developed into a three-dimensional space combat plan, because in the universe, there are not only front, back, left and right, but also up and down.

In the new textbook, it is seen that today in 2026 our human defense circle has covered Mars, Venus, the book reads

"Today's operational thinking:

First. 50 million kilometers away from the earth, Mars, Venus and other near-earth planets in orbit to establish a space station that integrates defense, exploration and combat, to carry out primary early warning and strike, and deploy the most powerful weapon on the earth today, three-phase bombs, in case of emergency. The space station as a whole can be used as a weapon to form the first barrier on the earth.

Second. In the earth's 2 million to 5 million kilometers of space, space mines with their own propulsion devices are set up, and the main explosion core is a nuclear fission weapon, which cannot be captured, but can only be destroyed remotely, forming a 5 million kilometers of the earth's defense circle and the second barrier.

Third. In the earth's 200-400,000 kilometers of space, the main force is 30 spaceships in service, each spaceship carries 500 space fighters, and the spacecraft is loaded with 100 space nuclear torpedoes at the same time. Form a third barrier.

Fourth. Between the 370,000-kilometer stretch of the Moon and the Earth's 800-kilometer upper warm layer, more than 1,000 armed space stations have been built, all carrying space nuclear torpedoes. and defensive space missiles, as well as 10,000 space fighter sorties deployed on moon bases. Form a fourth barrier.

Fifth. Tens of thousands of surface-to-air nuclear weapons have been prepared on the earth's sea surface and in the mountains, forming the last barrier on the earth.

The above is the overall operational thinking of the four armies in the "Mirror Era". “

I firmly believe that we can save the future of humanity.