Time flies, and half a year has passed in a blink of an eye.

In the past six months, the Maltese have been attacking the major cities of the earth even more frantically.

Thanks to a large number of pentagonal ships and ground troops, the Maltese controlled almost all human cities, except for a few small remote places.

In the past few months, hundreds of millions of people have been killed and injured in the Maltese sweep. Fortunately, the Maltese finally stopped slaughtering ordinary humans when they controlled all the cities on Earth, and the human armed forces went underground, and there were no formed armed forces to fight with them.

The total human population has now shrunk from 11 billion before the war to about 6.3 billion, and nearly 4.7 billion people have died in the Maltese invasion.

Now the Maltese ground forces have been projected to all continents of the earth, and with the assistance of the three million ordinary people on the earth who have erased their memories, the total strength of the Maltese ground forces has reached five million.

In terms of air power, the Maltese's huge black fleet dispatched tens of thousands of small ships to maneuver over the globe, covering almost the surface of the earth.

So far, the war to invade Earth has come to an end for the Maltese, with complete victory.

In the past six months, there has also been good news from governments and militaries that have all gone underground.

One of the most exciting news is the progress made in the research of the Maltese spacecraft.

In the underground secret wartime science and technology research center, almost all the domestic scientific research elites were concentrated, and after nearly half a year of tackling key problems by using the method of reverse research, they finally figured out the material composition of the hull of the Maltese pentagonal spacecraft, the internal structure of the spacecraft, and the key technical principles of the weapon system.

What makes the Maltese pentagonal spacecraft so robust is the extensive use of carbon nanomaterials, which are as strong as 50 percent of diamond. Most importantly, the surface of the spacecraft is covered with a thin layer of new, stronger, high-interacting carbon structural metal.

This metal is a new solid form of carbon, by compressing the space of carbon nuclei and protons to a certain suitable distance, forming a new type of metal with extremely high hardness, the hardness and toughness are equivalent to seven times that of diamond, and the melting point is 100,000 times that of diamond.

Despite the fact that the fuselage of the spacecraft is covered with the equivalent of a few hundred nanometers, the surface of the spacecraft is hard enough to withstand any external attack by Earth weapons.

In terms of the study of the internal structure of the spacecraft, the underground research center has also made new discoveries.

The engine of this pentagonal spacecraft uses a miniature antimatter engine that Earth researchers have been unable to conquer, and has an almost inexhaustible power source.

The energy weapon system inside the spaceship is similar to the weapon system of the Deep Blue Fleet on Earth, which is to destroy the target at high temperature when it hits the target. At the same time, it can also be adjusted by the central computer system to form an energy shield on the ship's hull to shield and vaporize external attacks.

The difference is that the temperature of the Maltese spacecraft at the moment of hitting the target is as high as 45 million degrees, which is hundreds of times higher than the energy level of laser weapons on Earth.

The energy shield formed is also incredibly powerful, not only is the temperature also as high as tens of millions of degrees, but the energy also has a certain outward force, which can bounce off external attacks.

The spacecraft is piloted using a neural network link, through which the pilot's brain neural link can be used to control the ship by mind, and each ship is connected to the fleet command center.

It is no exaggeration to say that each ship is both a fire unit and an information node.

With the current weapons on Earth, it is simply impossible to destroy a spaceship from the outside without the use of new types of nuclear weapons.

Even if a high-yield hydrogen bomb is used, the spacecraft will only be vaporized by the hundreds of millions of degrees of high temperature generated by the nuclear explosion if the spacecraft is not shielded by the energy shield. Once the ship opens the energy shield, even if the explosion is equivalent to the high-power hydrogen warhead equivalent to the TNT equivalent of the upper memory, it will not be able to completely destroy the hull, which is why the Maltese Boundless Fleet was able to survive the hydrogen bombardment unscathed.

The only most effective way to control a single ship is to destroy the pilot.

When the pilot of the spaceship dies, the brain nerves directly connected to the spacecraft will send special frequency brain waves, and the mothership command center will automatically disconnect from the spacecraft, and forcibly shut down the spacecraft's antimatter engine, while emptying all data from the spacecraft's central control system, leaving the spacecraft permanently dormant and unable to take off.

The only way to repair the spacecraft is to activate the spaceship's antimatter engine engines and other systems only after the new pilot's brain nerves are connected and connected to the mothership command center, and a new authorization is issued through the mothership data link.

The reason why the Chinese theater was able to shoot down the small Pentagon spaceship of the Maltese was all due to the fact that the 500 mutants who had recovered their memories were equipped with equally powerful energy weapons. Hit the ship's weakest engine vent without the energy shield turned on during maneuvering. As a result, the antimatter engine malfunctioned, and the energy carried by the engine was reversed, pouring a tank into the spacecraft to burn the spacecraft's neural network piloting system and a large number of electronic components, and at the same time burning the nerves in the Maltese pilot's brain, so that the spacecraft could break away from the mothership's command data link and automatically turn off the antimatter engine and fall to the ground.

After basically figuring out the structure of this small pentagonal spacecraft, the military top brass couldn't help but gasp, and at the same time, many people also had some frustration in their hearts.

It is no wonder that the Earth side is powerless in the war, and a small combat spaceship of the Maltese has such powerful protection and attack capabilities, and the horror of the protection and attack weapons of the fleet's large ships and motherships can be imagined.

Then again, even if we know the principle of the Maltese pentagonal spaceship, with the only remaining industrial capacity and technical strength of the earth, it is impossible to build the same spaceship in the short term.

After careful evaluation by hundreds of military scientists and weapons experts, it was concluded that according to the current military's technical and industrial supporting capabilities, if we want to mass-produce a spacecraft that can match the technology of the Maltese, under the condition of using the current pentagonal spacecraft as a model, even if all scientific research forces are concentrated, it will take at least 20 years to break through the technology of carbon metal materials with strong interaction in the laboratory. As for the antimatter engine, it will take a longer period of research to accumulate.

As a result, it will be difficult for the human side to develop aircraft sufficient to support ground military operations in a short period of time, and the issue of air supremacy is still a sword of Damocles hanging over the heads of the human ground forces, which is extremely unfavorable for launching a counteroffensive.

And the synthetic brigade that was originally planned to involve the mutants in the formation of special forces in half a year is unlikely to form substantial combat effectiveness for the time being, and it seems that the counteroffensive on the earth side will need to be prepared for a longer time.