Planet 4 of the Flaming γ is a giant gaseous Jupiter, slightly smaller than Saturn in the solar system, with a deep, dark yellow surface that extends from the equator to the north and south poles on a closer look.

After the Human Alliance took over the Flame γ, in accordance with Chen Xin's request, Planet 4 was designated as a forbidden area, and the airspace within a radius of 2.5 astronomical units of Planet 4 was forbidden for any spacecraft to fly.

However, this does not mean that there are no intelligent civilizations near Planet Four.

At this time, in the synchronous orbit above the equator of Planet Four, a huge spaceship skeleton is being built, and the skeleton is surrounded by various intelligent robots, and from time to time you can see small spaceships like ants carrying various industrial materials flying out of the atmosphere of Planet Four.

After being promoted to the fourth level, the strength of the steel hammer has been greatly improved, and the greatest ability is that it can synthesize elements with higher atomic numbers through hydrogen, helium and other elements, and can even create a small number of strong interaction materials that can only be manufactured by a fifth-level civilization.

Therefore, Chen Xin decided to hand over Planet 4 to Steel, after all, under the existing conditions, only Steelhammer has the ability to produce various industrial materials through nuclear fusion reactions, and the amount of various resources that humans can use inside the flame γ is only one percent of that of Planet Four, which can be regarded as making the best use of things.

What Steelhammer is doing now is tailoring a planetary-class battleship for itself that only a fourth-level civilization can have.

Named the China by Chen Xin, the planetary-class warship uses a strong interaction material as the skeleton of the spacecraft, and a special alloy made of steel and hammer in other places.

The spacecraft is powered by two heavy element fusion reactors and four light element fusion reactors, with six engines producing a power of 10 trillion kilowatts and generating enough electricity per second to be used by all humans on Earth for 50 years.

From this, one can imagine how big the gap between different levels of civilization is.

The ship's main attack weapons are high-power laser cannons, particle beam weapons, gravity bombs, antimatter bombs, etc.

Due to the fact that the fourth and fifth level civilizations are flying faster than light, the spaceship cannot fight the enemy. Therefore, for civilizations below level 6, interstellar warfare is generally carried out at a speed below the speed of light, which also makes laser weapons, particle beam weapons, and even missiles useful.

In terms of defense, the China spacecraft used liquid metal and nanorobot repair methods.

Liquid metal is understandably solid in normal conditions, but once damaged. It can then be converted to liquid and recover on its own.

As a result, Level 4 civilizations generally use liquid metal as the main armor of their ships.

The nanobot repair technology is much more complex, to be precise, it is a defense technology unique to steel root.

This defense is generally only aimed at those non-liquid metal materials, and inside these materials, there are nano-sized robots that will automatically repair the materials whenever the materials themselves are damaged.

According to the steel hammer, as long as it continues to be upgraded in the future. It can even create proton-level and even quark-level robots to repair damaged materials with strong interactions.

And on the China spacecraft, the most creative is the application of two other weapons.

That's the tachyon shield and the tachyon cannon.

This has to mention Chen Xin's research on tachyon technology in the past few decades.

Generally, the third-level civilization can only perfect the theoretical equation of the grand unified field after discovering the tachyon, but even if it reaches the level of the Tianqin civilization at the peak of the fifth-level civilization, their application of the tachyon is still in a rather rough stage.

But Steelhammer is different, after all, it once stood at the peak of the entire Virgo Supercluster, coupled with Chen Xin's research in the past decades,'s understanding of tachyon technology is also deepening rapidly.

Although limited by material factors. It couldn't make a tachyon cannon and tachyon shield of the level of a Level 6 civilization, but it did design two simplified versions of tachyon weapons.

As for how powerful the two weapons really are. For example, as we all know, tachyon is a negative energy particle, so the biggest role of the tachyon shield is to neutralize the energy weapon, if the high-power laser cannon hits the tachyon shield, all the laser energy will turn into nothingness.

And the fast cannon. It does the opposite.

The mass of the tachyon is an imaginary number, which means that the mass of the tachyon is of practical significance in the complex plane, although under normal circumstances the tachyon does not interact with any matter, but after the transformation of the steel hammer, the tachyon will become another form of negative mass particle. This particle has a negative mass and an imaginary energy, and once it reacts with the particles of matter in reality, it will annihilate into pure energy. The only difficulty is how to convert the tachyon into a negative mass particle at the right time.

Steel hammers solve this problem.

It is designed with a tachyon cannon that can attack ships flying in curvature, and coupled with the faster-than-light nature of tachyons, this weapon will almost always pose a lethal threat to warships of civilizations below level six.

And if the steel hammer had been designed to be more powerful and aimed at the star in time of war, it could have easily destroyed the star with a single shot.

However, due to material reasons, the range of the tachyon cannon is quite limited, and it can only attack the spaceship within 15 astronomical units at present, although it seems a bit chicken, but in the fourth-level civilization, the spaceship equipped with the tachyon cannon is already an invincible existence, and it can even wrestle with the warship of the fifth-level civilization.

The Jiangcheng spacecraft slowly docked into the synchronous orbit of Planet 4, Chen Xin walked to the porthole of the command center, looked at the powerful battleship under construction not far away, and said in his heart: "Steel hammer, come out!"

Soon, a small robot flew out of the China spacecraft under construction and drilled directly into the Jiangcheng.

"Old Bean, what's the matter with me?"

The steel hammer seems to be in a good mood, and Planet Four's abundant resources have made it eat round and round during this time.

Chen Xin smiled slightly and said, "A little troublesome, Evans reminds us that there may be a pirate group that wants to attack us!"

"Star pirates?"

Gang's eyes lit up, and he laughed: "Old Bean, I just think it's too boring to build a spaceship, can I finally fight?"

Chen Xin couldn't help but roll his eyes and said, "Don't be too happy too early, can we find out that the other party is still talking!"

Chen Xin mentioned the current predicament faced by mankind and the steel hammer, and the steel hammer immediately patted his chest and said: "What kind of problem should I think it is, this matter is left to me!" (to be continued......)