Those interstellar civilizations that are on the migration route of the ancient civilization army, seeing that the ancient civilization army is about to fight, their own planetary defense system is still the same, only located in a low-orbit orbit, only a few hundred kilometers away from the planet itself, according to the earth civilization, it is simply within the direct attack range of the ancient civilization, and these planets will immediately be unable to sit still.

If their planetary defense system remains the same, then when the army of ancient civilizations arrives and infects them with ultra-long-distance soul viruses, then their planets will not only be destroyed quickly and easily, and all civilized citizens will be slaughtered, but what is even more terrifying is that their defense lines will be useless and meaningless, and the planetary defense system built at a huge cost will become a laughing stock and useless.

Once the defense line is easily broken by the ancient civilization, this will only allow the army of the ancient civilization to obtain a huge replenishment of troops, creating more pressure on many planets and civilizations further behind, which will even directly threaten the survival of their own civilization.

This is something that everyone doesn't want to see, so they don't care if it's appropriate, whether there will be some problems, some defense holes. The planets immediately began to adjust their planetary defenses, moving all mobile equipment and weapons to higher orbits.

Although the structure of the original planetary defense system is transferred to a higher orbit as it is, it will inevitably cause some defense loopholes and some problems with firepower, but at least even if there are some problems, it is much stronger than the ancient civilization can directly bypass it.

Even if it is a flawed planetary defense system, as long as it still has actual combat value, then it can easily cause billions or even tens of billions of casualties to the soul body army of ancient civilizations. This is obviously much stronger than just being able to inflict thousands of losses on the ancient civilization and then being broken by the ancient civilization and then breaking the planetary defense.

If the next planet needs to consume billions of billions or even larger soul armies, then the souls of ancient civilizations must also think about whether it is really worth it to go to war easily.

But if the price to pay for the next planet and the destruction of all the civilized citizens on the planet is only millions of infected souls, then I am afraid that the souls of the ancient civilizations will not even have to think about it, and they will be able to attack the planet and kill everywhere casually.

This is a question of the cost of killing, if the cost is too low, the arrogance of the ancient civilization will be extremely arrogant, and I am afraid that there will be no one to govern at that time, and all planets and civilizations will suffer.

Even for the sake of the survival of their own civilizations, many interstellar civilizations have to increase the cost of war for ancient civilizations as much as possible, and suppress the terrible evil thoughts of ancient civilizations to wantonly conquer. Because that kind of ancient civilization is definitely the enemy of all civilizations in the immigrant star field, no one knows how terrible the ancient civilization will be.

Therefore, at the critical moment of life and death, facing the blows of ancient civilizations, many planets even knew that temporarily adjusting the layout of their planetary defense system would have all kinds of drawbacks, and they had to adjust it immediately.

And this adjustment of the entire planet's defense system soon showed their great value in the battle against the ancient civilizations.

Originally, facing the low-orbit planetary defense system of many interstellar civilizations, the difficulty of dealing with it after the ancient civilization discovered a new technique of remotely manipulating the soul virus to infect life forms, was simply minimal.

The soul body army of the ancient civilization does not even need to fight seriously, only needs to dispatch a sufficient number of infected soul body armies to kill each other outside the planetary defense system, and die enough to make the concentration of soul viruses reach a certain standard in the void, those soul bodies of ancient civilizations can stay under the protection of the army with peace of mind, and join forces to manipulate the soul virus, guide those soul viruses to infuse themselves into the planet, and after infecting a large enough number of infected people, the entire planet will have turmoil on its own, and more and more people will be infected by the soul virus, the entire planetary defense system will be paralyzed on its own.

Until the civilized citizens inside the entire planet are completely dead and their souls are completely harvested, the souls of the ancient civilizations give an order, and a large number of infected souls in the planet will automatically integrate into the soul army of the ancient civilizations, not to mention how easy the whole process is.

But now in the face of the planetary defense system with a rising orbital altitude, a large number of ancient civilization soul bodies feel uncomfortable, and in the face of a planetary defense system with a higher altitude, and a farther planet surface, many ancient civilization soul bodies already have a bad feeling.

Remote control of the soul virus, although this is a practical skill newly developed by the souls of ancient civilizations, but for some of its limitations, many souls of ancient civilizations can still feel it during use.

You must know that the activity of the soul virus is quite limited, and there is no way to control it when the virus is sleeping, and the soul virus can survive for a long time at this time.

But once the soul virus is activated and enters a state that can be manipulated, then the survival time of these soul viruses is quite limited, if it cannot be used to infect the living body within its survival time, then soon these soul viruses will be inactivated and deteriorated by themselves, and then there is no use value at all.

In some of the previous actions, the soul bodies of the ancient civilizations have been able to feel that the action time of these scattered soul viruses is very limited, and it is only by relying on a large number of soul viruses that they can infect the planet through a layer of planetary defense system, if the distance is extended a little longer, I am afraid that most of these soul viruses will be completely inactivated before a large number of soul viruses are poured into the planet.

If such a situation really happens, then I am afraid that the virus that has accumulated tens of millions of infected souls will only be able to infect a very limited number of people within the planet, and then this trick will undoubtedly completely lose its original strategic role.

And now that they are facing these planets, the planetary defense systems of each one have been raised to an orbital height of hundreds of meters, or even thousands of meters, which has too great an impact on the soul bodies of these ancient civilizations to remotely override the soul virus.

At first, the souls of the ancient civilization were not sure how much of an impact this would have, so despite their apprehension in their hearts, these souls of the ancient civilization still followed the original course of action, and once again had to play the game of "sacrificing the flag before the battle", allowing more than 10 million infected souls to kill each other in front of the defense systems of these planets, releasing a large number of infected souls.

The reason why these infected souls are allowed to kill each other, instead of letting them attack the planetary defense system on their own, is because under the killing effect of weapons such as high-energy lasers, a large number of soul viruses will be directly destroyed, which is too much loss, and it takes at least tens of millions of infected soul body casualties to achieve sufficient soul virus concentration. In order to save some considerations, these ancient civilization soul bodies simply let them kill each other and release the soul virus.

In this way, the same effect can be achieved, and the losses will be reduced by at least five times or more! The environment of the ancient civilization is not good now, so it is a little bit that can be saved, and all that can be saved is a precious resource!

After the soul virus concentration reached the standard and reached the standard of remote control, these ancient civilization souls once again tried to carry out long-range virus infection on the planet they attacked.

However, a very regrettable thing happened, these ancient civilization soul bodies finally found that under their urging, the soul virus had already deteriorated and inactivated after crossing a distance of three or four hundred kilometers, and when it passed through the range of five hundred kilometers, the slightest sign of the existence of the soul virus could no longer be felt, and then they wanted to carry out long-distance virus infection on the people inside the planet, which obviously had no basis for operation at all!

The strategic new technology that was finally found was blocked by these planets with the weapon of distance, which made the souls of the ancient civilization simply unable to accept it, and finally just passed a good life of making a lot of money, and now let them suddenly return to the previous predicament of losing troops and losing troops and making ends meet, who can stand it?

Therefore, the soul bodies of the ancient civilization urgently needed to make more attempts, and after many attempts, they found that the activity of these soul viruses was maintained for a certain time, and after a while, these soul viruses would definitely not survive, but the speed of these soul viruses crossing the void was controlled by the soul bodies of the ancient civilizations who operated them.

The more ancient civilization soul bodies exert influence together, the faster these soul viruses can be infected across the void, and a hundred or so ancient civilization soul bodies can manipulate the soul virus together to remotely infect the soul virus to allow the soul virus to enter the interior of the planet, but the existence time of the soul virus activity will also be greatly reduced, and the overall scale of successful infection will be greatly reduced!

However, by increasing the number of soul extraction operators of ancient civilizations to accelerate the soul virus, it seems that there is also an upper limit, and it is difficult to continue to improve the speed of the soul virus after it is accelerated to a certain extent, and it can only expand the scale of the soul virus under control, which limits the role that remote control of the soul virus can play.

In short, in this way, in the face of those planets that have adjusted the height of the planet's defense system, it is not so simple to easily take down these planets just by relying on the remote infection of the soul virus.

Inside those ecological planets, the control of the state of personnel is now stricter than one, and many planets even distribute status monitoring bracelets to citizens, monitoring the physiological state of each citizen at any time, once it is found that some citizens have abnormal situations, the safety inside the planet will be dispatched immediately to monitor the corresponding personnel in a timely manner.

Even if these personnel have mutated, or their soul bodies are directly separated from the body, they will be eliminated by the security personnel with high-energy laser rifles in the first time, which will not have much impact, let alone shake the stability of social order.

As a last resort, the souls of the ancient civilization can only pick up the previous violent rush tactics and continue to send a large number of infected souls to impact the planet's defense system, and at the same time, once these infected souls are killed, they can also release a certain soul virus, and when the lower limit of demand is reached, the souls of the ancient civilization can also take the opportunity to remotely control the actual combat and infect the planet with viruses.

With such a two-pronged approach, it can be said that it can save some combat consumption, and maybe there will be some surplus after destroying these ecological planets.

In short, before trying it, it is obviously impossible for the soul body army of the ancient civilization to admit defeat easily, and it is so gray that it retreats on its own, and everything must be tried before the specific gains and losses can be clear.

However, after the tactics of remote control of the virus failed, the souls of the ancient civilizations instinctively had some psychological shadows, and they knew very well that they wanted to make a big profit like before, but now it seems that it is completely impossible, and it is already quite good to be able to take advantage of it in the new combat environment.

And after the ancient civilization's army of souls launched a large-scale offensive operation, a-for-tat battle immediately took place between the army of infected souls and the planet's defense system.

A series of high-energy laser beams traversed the void, waves of infected soul bodies army one after another, between the continuous adjustment and advance and retreat of the two sides of the battle, countless infected soul bodies were beaten into flying ashes, green smoke, and there were also countless high-energy laser weapons that were invaded by infected soul bodies to destroy circuits, directly damaged and ineffective on the battlefield, and the losses of both sides were very large for a while.

On the one hand, the planetary defense is facing a large number of weapons damage, all of them are nervous, this planetary defense system is their lifeline, in the face of this lifeline retreating, citizens are anxious, feeling like their lives are burning inch by inch, and they really want to replace them.

But even so, these planets and the interstellar civilizations behind them already feel magical.

The proposal of the Earth's civilization worked wonders!

Although they have suffered a lot of losses now, and even their planet may not be able to avoid the fate of destruction, at least their deaths have now become valuable again, and they are no longer simply adding resources to ancient civilizations, and their planetary defense systems have caused countless damage to the armies of ancient civilizations while being damaged.