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However, although the nest of ancient civilizations cannot be easily abandoned, the threat of earth civilization cannot be ignored.

The weakness of the ancient civilization in dealing with the attack of the earth civilization is something that everyone has seen, and people of insight also know very well that it is not a good choice to go head-to-head with the earth civilization.

Therefore, after synthesizing the opinions of all parties, the ancient civilization on the whole could only choose the strategy of passive defense and active breakthrough to deal with the current crisis.

The so-called passive defense is, first of all, to organize forces as much as possible to resist the attack of the earth's civilization.

Of course, in order to preserve the strength of the ancient civilization itself, the soul bodies of the ancient civilizations will not be dispatched, anyway, in front of the earth civilization, the soul bodies of the ancient civilizations will not be able to play their due value, so they simply do not dispatch any of them now, and mainly use the combat forces of subordinate civilizations.

Let the subordinate interstellar civilizations exert more strength, even if it is an outdated faster-than-light spaceship, they can organize as much as they can, and block the troops of the earth civilization as much as possible in the periphery of the immigrant star field.

Of course, it is a bit difficult to block the advance of the earth civilization with only some backward superluminal spaceships of backward interstellar civilizations, but if they work well, these backward combat forces can also play a big role, and it is not completely meaningless.

At least on a specific battlefield, it would cost the fleets of Earth civilizations to break the siege of these faster-than-light ships.

The attention of the ancient civilization is to play a war of attrition, relying on the geographical advantage to organize the strength as much as possible to make the earth civilization return in vain, if the earth civilization does not have the determination to pay huge sacrifices, maybe it will be able to block the earth fleet.

Of course, if the earth civilization spares no effort and desperately consumes a large number of fleets to attack the lair of the ancient civilization, then the power of these subordinate civilizations will not be able to stop it no matter what, and no matter how great the geographical advantage and battlefield advantage are, it can be determined.

If the gap in scientific and technological strength reaches a certain level, the low-level civilization will be unable to withstand the attack of the high-level civilization by virtue of the great natural danger and geographical advantage, and no matter how many combat forces there are, it will be impossible for the high-level civilization to resist the attack of the high-level civilization, and in many cases, the reason why the high-level civilization cannot defeat the low-level civilization is just because they are unwilling to pay a sufficient price.

The ancient civilizations could only hope that the Earth civilizations did not want to fight too hard with them, so that the ancient civilizations could continue to rule the immigrant star fields of the Meteorite Star Sea for a period of time, instead of running away soon.

In short, it is difficult to say how long the nest of the ancient civilization can have a stable life, but even if it is one more day, it is good, and one more day of stability The ancient civilization can scavenge some more resources, and the ancient civilization will never easily evacuate the nest unless it is a last resort.

After a detailed analysis of the geographical location of many star fields of ancient civilizations, a traffic point numbered as the No. 95 wormhole passage became the core location of ancient civilizations to resist the attacks of earth civilizations.

This No. 95 wormhole passage is in the outermost area of the meteorite star sea migration star field, which can be described as the frontier area to defend the lair of ancient civilizations, and it is also the only way to enter the immigration star field.

As a wormhole channel, Passage 95 has traveled a distance of more than 2,000 light-years in the starry sky at once, greatly shortening the actual voyage, and can be said to be an important point on the interstellar route.

If the fleets of Earth civilizations want to attack the immigrant star fields under the banner of ancient civilizations, they must shorten their sailing distance through this wormhole passage.

It is precisely because of the special role of the No. 95 wormhole passage that the ancient civilization is located, and also because the location of this wormhole passage is extremely suitable for the ancient civilization to arrange troops and gather a large number of starfleets to fight positional warfare with the earth civilization, so this wormhole passage was selected as the ultimate defensive fortress against the attack of the earth civilization.

After identifying this key battlefield, the ancient civilization immediately demonstrated its strong ability to control its subordinate civilizations.

With the order of the ancient civilization, endless manpower and material resources were mobilized, and countless spaceships began to build stations around the two ends of the No. 95 wormhole passage.

A large number of defense facilities, space bases, maintenance bases, logistics and material reserve bases, and so on, have all taken shape rapidly under the rapid construction of these spacecraft, and a large number of combat ships have also been transferred from various subordinate civilizations to familiarize themselves with the battlefield in advance, as well as the reorganization and training of the entire coalition force.

In just over half a year, the ancient civilization has formed a complex and huge starry sky defense system around the two ends of the No. 95 wormhole channel, a large number of warships are in place in time, and there are more warships that continue to gather from various star fields to the battlefield.

While trying their best to resist the invasion of the earth's civilizations, the people of the ancient civilizations devoted more attention to the infiltration of the three cosmic-level civilizations.

Forced by the huge threat brought by the earth civilization, the clansmen within the ancient civilization all believed that only relying on the defense of the combat fleets of those subordinate civilizations could not withstand the earth civilization for a long time, and this defense line would be broken sooner or later, and it was worthless to steal a life, so the back road in the cosmic civilization was the real long-term development route.

Based on this pessimistic idea, during this period of time, the ancient civilization has launched one large-scale attack after another on the cosmic-level civilization, sending a large number of subordinate civilization warships to the three cosmic-level civilization battlefields, and launching a powerful impact on the blockade line of the cosmic-level civilization.

Because these battlefields are far away from the No. 95 wormhole battlefield, the military operations here do not affect the defensive operations in the rear, and the souls of the ancient civilizations have taken the ships of the subordinate civilizations to go deep into the battlefield, and take the opportunity to infiltrate the enemy fleet during the battle, and take the opportunity to go deep into the warships of the cosmic-level civilization.

Although the three cosmic-level civilizations have already known that there is a soul body civilization hidden in the meteorite star sea, and know that occasionally some soul bodies fish in troubled waters in the battlefield, on the one hand, this situation is not frequent, on the other hand, it is also because the number of soul body detection equipment is limited, and the output is even more limited。

Therefore, the ancient civilization has a very good effect on the fleet penetration of the three cosmic-level civilizations, although a small number of soul bodies are unlucky to be identified on the spot and killed by naval guns, but most of the soul bodies are with the help of the ships of the cosmic-level civilizations, and go deep into the territory of the three cosmic-level civilizations in the colonial galaxy.

It's just that it's not very difficult to enter the territory of the cosmic-level civilization in the colonial galaxy, but it is too difficult to use these alien colony territories as a pedal to further infiltrate the home galaxy of the three cosmic-level civilizations.

Because it is known that there are strange soul bodies in the meteorite star sea, the interstellar wormhole passage that leads directly to the home galaxy of the three cosmic-level civilizations is also heavily defended, and the entry and exit routes are inspected by soul body detection equipment with high precision and high detection capabilities, and the soul bodies of the ancient civilizations have tried to sneak into the home galaxy of the three cosmic-level civilizations many times, but these attempts have finally failed, and those soul bodies that have ventured to dive into the sea are like mud cows entering the sea, and they have been identified and killed by the defense mechanism of the three cosmic-level civilizations。

In the past, because the situation was not too urgent, the ancient civilization was not willing to take risks and forcibly infiltrate the home galaxy of the cosmic civilization by violent means.

After all, the strength of the old cosmic-level civilization is unfathomable, if there is no deep accumulation within the cosmic-level civilization, rash action will only expose the intentions of the ancient civilization, once it attracts the attention of the cosmic-level civilization, even if the ancient civilization can penetrate into a certain soul body within the cosmic-level civilization, it will not be of much use, and will only be uprooted in the end.

For a cosmic-level civilization, let alone a few small planets, once there is a fundamental threat to them, even millions of planets, millions of planets can be erased in one fell swoop.

If the souls of the ancient civilization have infiltrated less, once an accident is detected, the ancient civilization will definitely not hesitate to destroy them along with the planet.

Therefore, in the past, the ancient civilizations were all slowly trying to develop into the home galaxy of the three cosmic-level civilizations, but focused their main energy on infiltrating and controlling the colonial galaxies of the three cosmic-level civilizations.

The territory of the three cosmic-level civilizations in the colonial galaxy is quite large, and the population size is also extremely huge, and the number of souls infiltrated by the ancient civilizations here before was not much, but they only formed control in some key planets, and infected the citizens of the cosmic-level civilizations in those planets little by little with soul viruses, because the general dose was not large and did not actively activate the effect of the virus, so the citizens of the cosmic-level civilizations in these planets did not perceive the infiltration and control of the souls of the ancient civilizations。

But now, with the crisis brought about by the earth's civilization, the ancient civilization has no interest in slowly penetrating, and it has become the demand of the ancient civilization to achieve results in a short period of time.

And as a large number of soul bodies infiltrate into the colonial galaxy territories of the three cosmic-level civilizations, it becomes a possibility for violence to infiltrate the cosmic-level civilizations.

With the help of the infiltration and control formed by the ancient civilization in the universe-level civilization before, the ancient civilization has developed a lot of internal lines within the universe-level civilization, and these internal lines know that their life safety is controlled by those soul bodies, for their own safety and also to be able to get ahead with the help of soul bodies. To obtain money and power that they simply can't reach, these insiders are willing to cooperate with the souls of the ancient civilizations, and it can be said that the souls of the ancient civilizations dare not refuse what they ask them to do.

In order to ensure the reliability of these insiders, the souls of the ancient civilization have already conducted many experiments, directing these insiders to do a lot of dirty work that can be punished by death if they are caught in violation of laws and disciplines, and the uncooperative guys have been cleared in advance, and the remaining insiders let them do anything.

It is also with the convenience of these insiders that the soul bodies of the ancient civilizations sent some deeply infected slave populations into the home galaxy of the cosmic-level civilization, and when they arrived on the other side, they immediately activated the soul viruses in the bodies of those slaves, and created them into the source of infection for the transmission of soul viruses, and spread the soul viruses on a large scale on the opposite planet, creating countless potential virus infection people.

With this step and the arrangement in advance, the souls of the ancient civilizations have the possibility of large-scale infiltration within the cosmic-level civilization at one time.

After all, the planet opposite the cross-galaxy wormhole channel, as an important hub linking a colonial galaxy, has transportation routes that extend in all directions and can directly connect countless planets.

There is no soul-detection equipment on these related routes, as long as the souls of ancient civilizations can sneak into the spaceships going to other planets, even cosmic-level civilizations will easily be unable to detect their existence at that time.

Therefore, after planning Zhou Xiang and arranging all the relevant action details, with the help of the inner line of the cosmic-level civilization, the souls of the ancient civilizations infiltrated into the home galaxy of the three cosmic-level civilizations through the wormhole channel almost at the same time.

As soon as they passed through the intergalactic wormhole, those spaceships full of soul bodies stimulated the soul detection equipment of the cosmic-level civilization to send out a sharp alarm, but before the defense facilities of the cosmic-level civilization were activated, the souls of the ancient civilization had already activated the countless soul viruses lurking in this planet first.

In an instant, countless citizens of cosmic-level civilizations fell to the ground, a considerable number of them had already been taken away from their lives in a very short period of time, and most of the others also showed various serious symptoms.

The reason why these infected citizens of the universe-level civilization did not show signs of zombieization was because the souls of the ancient civilizations had relented, and they did not want the heavy news of zombie attacks to attract the attention of the universe-level civilization.

But even so, the detonation of this wave of soul viruses has brought enough effect. The various weapons and equipment installed by the cosmic-level civilization around the cross-galaxy wormhole passage were useless and generally did not play a role, and in a short period of time, millions of souls of ancient civilizations had infiltrated them.