The weight of the starship is very large, and if you want to fly in the atmosphere, you need to install auxiliary engine thrusters to increase the floating force of the flight.

The auxiliary engine, which can reach more than 10 million tons of thrust, will not only increase the energy consumption of the main reactor, but also reduce the energy supply of equipment such as the warship's protective shield, main thruster, and weapon system.

It will also occupy a large part of the hull area on battleships with already compact internal spaces.

In addition, the engine vent cannot cover the armor layer for protection, and once the ship's protective shield is broken, the fragile defense of the vent will definitely become a key target for the enemy.

To put it simply, installing a secondary engine on the hull of the ship means that it will reduce the defense of the battleship!

Fortunately, when the battleship is designed, the auxiliary engine will be installed with a separate cantilever to minimize the damage to the auxiliary engine and cause extensive damage to the main body of the battleship.

But even so, it will still weaken the overall defense of the battleship a lot.

For these reasons, as long as there are no specific combat needs, neither large nor super-large starships will be designed as "air-space" dual-purpose warships.

Although dual-purpose warships are versatile and adaptable, and have the diversity that can be used for tactics, they are far inferior to single-minded warships in terms of combat effectiveness.

And like battleships and cruisers, these two warships that pursue "defense" and firepower limits have long been squeezed out of all capabilities, and even if you want them to have air-space flights, they simply don't have the spare power to do it.

The only warship that is most likely to have "air-space" navigation is an "aircraft carrier" that has enough hull space as an integrated combat mobile platform.

Among the large and above warships currently under the banner of Xingfeng, the "Star-class" Chaohang is an air-space dual-purpose warship.

The reason why the "Kunpeng" base carrier has the ability to navigate in the atmosphere is mainly because the technology of the prawn family is very special, which is a special case among warships.

Without a shield, a large part of the energy can be saved for the engine, and the race-specific anti-gravity technology allows it to fly in the atmosphere with ease.

It's a pity that although all the warship technologies of the Prawn clan have the ability to fly in the sky, none of them have an integral protective shield, and their appearance does not conform to human aesthetic views.

Governments and major consortia will not buy them, which means that Xingfeng will not have these warships.

After all, the transaction was such that Huanyu would build two ships and deliver only one to the buyer, and Huanyu would earn one for itself.

The Artean has its own full set of warship technology, but its technology tree is completely different from that of the Prawn Clan, and each country buys the battleship type of the Attered.

This also means that at present, all large battleships and cruisers on the earth do not have the ability to break through the atmosphere and enter space with their own power.

The remaining medium-light and small ones have the ability to fly in the atmosphere because they are relatively light in weight, and their own flight ability is relatively strong, in order to facilitate steering and maneuvering, the number of auxiliary engines is relatively large, so they all have the ability to fly in the atmosphere.

After the construction of the starship is completed, the private military contractors of various countries and consortia need to learn to drive and fight, so the battleship must be able to move.

For small and medium-sized warships, the naval warriors and technical experts of the Yates under the Huanyu Group can take the soldiers and crews sent by various countries to pilot the battleship in the atmosphere for daily training.

But after each battleship and cruiser is built, there is no way to train in the atmosphere.

Therefore, the crews sent to the Huanyu Group by various countries can only go through simulated operations first, and after they have adapted to the basic operation of the warship, the "Kunpeng-class" base carrier will use anti-gravity technology to send them to extraterrestrial space orbit one by one.

In order for the crew and soldiers, under the guidance of the Yate technicians, they can really start the starship, train in the space orbit, and quickly familiarize themselves with the operation and operation of the various functions of the warship.

Originally, this process has been very peaceful, with large warships flying out of the atmosphere from the earth and floating in space, and various small and medium-sized light warships flying over the world.

While everyone in the world sighs at the power of the battleship, their hearts are becoming more and more excited, looking forward to entering the battleship and stepping into the mysterious cosmic starry sky in the future.

Under the large number of "interstellar conscription" advertisements in various countries, there is a storm of joining the army around the world, and everyone is looking forward to being selected and becoming the first generation of space marines on Earth who will go down in history.

Huanyu Group has also taken advantage of this trend, and has recruited a large number of talents in various industries and hundreds of thousands of private military contractors with the advantage of being the birthplace of interstellar technology.

Originally, the entire naval formation warships were all lost in the defense of Dima Island.

Driven by this "interstellar wave", it has developed rapidly into the world's most powerful interstellar navy and the most powerful "blade" under the Huanyu Group.

As the commander of the First Army, Li Yunlong, watching the prosperity of the Second Army established later, was envious and jealous in his heart, his eyes were as wide as a big light bulb every day, and he cried and scolded his mother all day long.

Fortunately, during this period of Xingfeng, he was not in the territory of the Koro Kingdom, otherwise with Li Yunlong's rogue ruffian and irascible character, he would not want to have a peaceful birthday one day.

If you don't get annoyed, you will be annoyed!

However, just five days ago, the last "Kunpeng-class" base carrier in the world, the "Ares", successfully lifted off from the base of the Mediterranean warship, looking forward to the time when the Earth United Starfleet is about to explore the unknown interstellar ocean.

The "Emperor" of the United States, the "China Tianlong" of China, and the "Nordic God" of Russia, the three Kunpeng-class base carriers, led by the "Kunpeng", together sent four "Dragon Turtle-class" - "Xuanwu-class" castrated battleships to space orbit, and were about to return home.

The shipborne space energy probe on the "Kunpeng" suddenly issued a red strong energy source alarm!

Subsequently, the three Kunpeng-class base motherships "The Emperor", "China Tianlong", and "Nordic God" also appeared abnormal energy alarm prompts.

In order to find out what exactly happened, each of the four motherships released an unmanned exploration spacecraft, which, according to radar detection, traveled more than 420,000 kilometers at high speed.

Finally, they reached the far side of the moon, which was dark and cold, with a temperature of more than 100 degrees below zero.

Here, the unmanned spacecraft found that about 20,000 kilometers from the land on the far side of the moon, there was a large hole with a diameter of more than 200 meters and a black wavy film on the surface, as if it could swallow everything in the world.

And the size of this hole is still expanding rapidly and rapidly with the movement of time.

This location is just blocked by the moon, in the blind spot of the entire Earth's field of view, and the color of this large hole is as dark as space in space.

If it weren't for the battleship's space energy probe, with the low-level technology of the earth before, there would be no way to discover this big hole that suddenly appeared.

What is this and the Big Hole?

Humanity on Earth is not clear at all!

The Otarts are different from the Prawns in that they came to Earth from other galaxies around the Milky Way through these space nodes.

Especially Princess Beta, who had already known that the Ghana clan would invade the earth, reacted immediately and predicted what kind of big crisis was about to occur.

Spatial nodes require special equipment to open, and the moment they are opened, an exit will appear at the marked teleportation location.

Since this space point on the far side of the moon has been opened, it means that there are already unknown creatures or warships that have entered from another space node and set the teleportation site at the cosmic node on the far side of the moon.

When all the nodes of the universe are opened, it means that the unknown creature is about to arrive.

The interstellar colony fleet of the Ghana clan has arrived on Earth a month ahead of schedule, but the backbone of the torture wind is not there now, and this unexpected appearance has made the pressure on Beta's heart extremely heavy.

In order to cope with the early arrival of the crisis, Princess Beta organized all the senior management of the Huanyu Group and held an emergency meeting.

During the meeting, Princess Beta disclosed for the first time the reason why the Artes came to Earth, and what kind of earth change the large hole appeared on the far side of the moon.

The Ghanaian invasion she had told her had been told to everyone present as well.

The company's management representatives headed by Xiao Yunxia and the military representatives led by Li Yunlong, Gao Yun, and Leng Feng heard that the "big hole" in space was a space portal, and it was likely that a large number of powerful enemies were on their way to the earth.

Because the news was so shocking, the entire conference hall exploded at that time, and the first reaction was to blow up the portal.

Princess Beta explained helplessly that space technology was a product of a higher-level civilization, and with their current level of technology, there was no way to affect the space channel.

In addition, the Xingfeng and the Yate tribe both have a deep grudge and hatred with this race that may be about to invade, and peace negotiations cannot exist at all.

Everyone is well aware that war is inevitable!

But now, as the supreme leader, he has been out for more than 10 months and has not returned, and the enemy has not yet appeared, and no one knows the specific number and strength of the enemy.

In this regard, all the senior management of the Huanyu Group decided to arrange all precautionary measures with the highest risk level after urgent deliberation.

First things first, that's to take advantage of the position!

All the warships belonging to the Second Army of the Huanyu Group, which will be stationed in extraterrestrial orbit for training, have all been mobilized to the far side of the moon to guard the cosmic node portal that is about to be fully opened.