Not only Yunzhou Star, but also other colony stars and the earth will start construction of interstellar cannons, which will become the last and strongest line of defense for human beings to defend their homeland, so as to get rid of the stubborn disease that planetary defense must rely on warships.

In this way, the limited number of warships of the Republic will no longer have to be tied to the planet, and the military can draw many warships for other purposes.

It's just a little bad, the difficulty of building an interstellar cannon and the materials consumed are not much less than that of a battleship, but the structure of an interstellar cannon is much simpler than that of a battleship, and it is much easier to build an interstellar cannon than to build a battleship, which is also one of the important reasons for the country to promote interstellar artillery.

It's a pity that Yunzhou Star only has a continent, and the interstellar cannon can't be built in the water, which limits the distribution range of the interstellar cannon.

Fortunately, the engineering troops learned from the experience of the fleet attacking YM174, and in addition to the interstellar artillery, they also planned to build enough short-range interception firepower to ensure that aircraft entering Yunzhou Star from other directions could not enter the airspace over the Yunzhou continent.

However, this kind of defense is still a little thin, if the enemy throws meteorites into the vast and boundless sea from the dead angle of the Yunzhou continent's firepower, the roaring tsunami will sweep away all the construction achievements on the Yunzhou continent.

In order to cope with this situation, the military proposed three options, one is to build support columns in shallow seas, the bottom of which is fixed on the bottom of the seabed, and the upper end is exposed to the sea surface and build a solid firepower platform, on which anti-aircraft firepower is installed.

This plan seems to be feasible, but the firepower platform cannot be built too big. It is also impossible to use geothermal energy as an energy source, which dooms the platform firepower to be far inferior to the interstellar cannon, which still leaves a fatal flaw in the end.

The second is to build some surface ships...... It's a bad idea that stinks anymore. If you have the time and energy to build a surface ship, how good is it to build the God of War class directly?

The third is to increase the number of orbital laser cannons, because orbital laser cannons use solar energy, so energy and power are not a problem - the reflective surface of the laser cannon pot can also be used to collect sunlight.

If the entire synchronous orbit of Yunzhou Star is covered with reflex laser cannons, it will also become a rare spectacle.

June 29, 2214, Solar System.

The twenty Skyhawk-class warships that returned to the mainland were divided into two halves by the military and organized into the Ningzhou Fleet and the Huzhou Fleet respectively. Ten warships per fleet. Today is the day when both fleets set sail.

The location of the Ningzhou Galaxy and the Huzhou Galaxy is near the Yunzhou Galaxy, and this time the twenty Skyhawk-class warships are organized into two fleets, which has the meaning of enriching the strength of the front, and also has the purpose of expanding the defense line.

In addition to twenty battleships. Each fleet also carried six engineering ships. It is the kind of spaceship used by the engineering troops to build the Yunzhou Star.

Not all of these twelve engineering ships are used in the two systems of Ning and Lake. Instead, they had to leave more than half of them on the road, and each fleet arrived at its destination with only two ships.

In other words, in addition to the two galaxies of Ning and Lake. There are four more galaxies that are about to start construction.

Yunzhou Star is the first galaxy to colonize the real Yàn, and it is precisely with the successful experience of Yunzhou Star that the Republic dares to start the construction of six galaxies at the same time.

The Republic's colonial plans weren't so radical in the first place, but now they don't care so much.

Since these four galaxies are some distance from the front line, the military did not arrange a fleet to accompany them, and the two fleets of Ning and Hu will send these engineering ships to the place, and if they find a cosmic biome nearby, the fleet will completely eliminate the threatening cosmic creatures before leaving.

In the near future, the construction of six star systems will begin at the same time, and the construction of the colony star of the Republic is about to enter the fast lane!

These six galaxies will undoubtedly also use clones as immigrants, and of course they will not admit to the use of forbidden clones, but that the spacecraft carries frozen embryos donated by volunteers, and colonizes them remotely by cultivating IVF in situ.

The test-tube baby mentioned here is the real test-tube baby, that is, the baby that develops and is born in the test-tube, in fact, this is also one of the key technologies of human cloning, the so-called baby has reached the standard of fifteen or sixteen years old when it is born.

In addition, these 12 ships will be the last to use human cloning, and a large-scale propaganda campaign has been launched to call on the public to donate germ cells, and the future engineering ships will carry real natural embryos.

Unfortunately, such material conditions are not yet available at the moment.

Clear-eyed people know the hidden truth behind frozen embryos at a glance, but no one will rashly jump out and debunk the military's tricks, because the United States, Russia and Europe, which are qualified to debunk pig urine, have the same plan.

In fact, the idea of human colonization is not new, long before humans entered the cosmic age, some people proposed to build a conventional spaceship carrying human embryos, spend tens of thousands of years to fly to the target star, and then start to breed embryos, and finally the new planet to gain a foothold.

Unfortunately, this project takes too long, and no one wants to invest in such a bottomless pit, even if the technology involved is fully mature.

Unexpectedly, after human beings stepped into the real cosmic age, they had to adopt cloning because of the lack of colonists...... Or colonize by freezing embryos.

If human beings had enough time, no country would use this abnormal colonization method, but at the moment there is not so much to care about, the informed forces are considering the strategic buffer, and the uninformed forces are discovering the former's actions, and have to find ways to compete for the colonization star - there are indeed many habitable planets in the universe, but there are only a few closer to the solar system, and it is safer to start earlier.

For those countries that are less powerful, even if the distance is one light year more, the difficulty of colonization will increase exponentially, and grabbing a habitable planet that is relatively close to each other has naturally become their first choice.

No one thought that the reason why the curtain of the cosmic colonization era was opened vigorously was actually the unhealthy competition between several countries in order to grab the colonization star.

Among them, the Chinese side is the most well-prepared and has the most detailed plan, but it is also the only one whose purpose is not really for colonization, but for the construction of multi-layered long-distance strategic depth.

Soon after, the military's engineering ships will continue to depart.

Even if the solar system is destroyed by the enemy, as long as there is a colonial star that still exists, the blood of the Chinese nation will continue to pass on - clones are also human beings, and they have the blood of the Chinese nation flowing in their bodies, and they are all part of the Chinese nation at all times. (To be continued......)

PS: Four more, I finally didn't lose my words, thank you for your monthly pass support!