There are still thirteen minutes before the arrival of the Ghost Clan. During this time, Xiao Yu nervously exchanged some information with the commander of Luca's fleet, as well as some points against the ghost clan.

To put it simply, there is only one way to destroy the Ghost Clan, and that is to continuously attack with firepower, continuously deplete the radiation intensity of the Ghost Clan, and slowly grind it to death. This mode, whether it is for the second-level civilization or the sixth-level civilization, is universal, but the firepower of the high-level civilization is a little stronger, and it takes less time to destroy the ghost clan of the same level.

For the sake of fairness, the two sides did not say who was the main attacker and who defended, but shared the two places on the port side equally, and each was responsible for its own attack and defense.

"Attention, there are only two light minutes left in the distance, high-power laser cannon, start shooting!" At this time, Xiao Yu received a signal from the commander of Lucca's fleet.

"Good!" Xiao Yu agreed, and immediately manipulated the laser cannons on the spaceship, with a total of 200,000 guns, and began to shoot forward. At the same time, the Lucca civilization also had up to 100,000 laser cannons fired.

The average strength of these 100,000 laser cannons is much higher than Xiao Yu's, which leads to the fact that although their number is not as good as Xiao Yu's, their total attack power is much higher than Xiao Yu's.

Xiao Yu secretly recorded the power, number and other parameters of Luka's fleet. Xiao Yu knew that the other party must also be recording his spaceship parameters. But Xiao Yu didn't care.

Because there is no over-distance communication satellite in advance, the location and distance of the ghost clan can only be detected through the ghost detector. Xiao Yu saw that the value on the ghost detector about the strength of the ghost clan had slowly decreased.

This decline is extremely slow, if you keep shooting at the current intensity, when the ghost clan gets close, it is expected that its total energy strength will drop by about three percent.

"Laser cannons don't work! Shoot energy cannonballs! Xiao Yu sent a message.

"Good! Energy cannon salvo! The commander of Luca's fleet replied quickly.

At this time, the distance between the ghost clan and the fleet was only thirty light seconds, about nine million kilometers.

The total number of ships reached 180,000, and each launched its own energy cannon attack. Immediately, countless energy cannonballs emitting a faint blue light rushed forward at sub-light speeds, and then, violently exploded in the void.

Xiao Yu detected that the strength of the ghost clan had dropped by another five percentage points.

There are only twenty seconds left until the meeting time.

Xiao Yu was about to launch the second round of energy cannon salvo, and at this critical moment, Xiao Yu suddenly had a strange feeling again.

"Force Field Generator! Lucca Civilization! What are you doing?! Hurry up and turn this thing off! Xiao Yu roared angrily.

That's right, Xiao Yu detected that the Lucca civilization next to him turned on the force field generator that Xiao Yu hated again.

Previously, after the two sides reached a cooperation intention, Lucca Civilization had turned off the force field generator. Naturally, it was to not affect Xiao Yu's combat power, but I don't know that because of Weishenme, they actually turned on the force field generator again at this time. Immediately, Xiao Yu's spaceship's maneuverability was severely limited, and its combat power plummeted.

“haha！ Damn mechanical civilization! You can be cannon fodder! I'll withdraw a little bit one after another! In the communication channel, the arrogant laughter of the commander of the Luka spaceship was heard.

Xiao Yu immediately understood that he had been deceived by the other party.

"Master, you've been fooled." I don't know when, Luca II has already woken up, and it senses the whole thing.

"Nonsense! I know I've been fooled! But how dare they? Having lost my combat power like this, do they really have the confidence to defeat the Ghost Clan? Xiao Yu roared angrily.

"Not really. Even the Ghost Clan has certain instincts. Between long-range and close-range targets, they will naturally choose close-range targets, which means that after Luka's fleet retreats, you will be attacked by the Ghost Clan first. And when attacked, you will naturally resist, which will hold the Ghost Clan for a while, which will buy valuable time for Luka's fleet to attack......" Lukka II said quickly.

"!" Xiao Yu scolded viciously, "Even if I die, I can't make you feel better!" Energy Cannon! Launch! ”

Xiao Yu gave the order to launch. The difference is that this time the target of the launch is not aimed at the Ghost Clan, but at the Lukka fleet, which has retreated some distance.

"It's useless, gravity bomb! Launch! The commander of Lucca's fleet roared.

The gravity bomb is a fourth-level civilization creation, and it is a weapon of the same scientific and technological level as the force field generator. It is conceivable that the gravity bomb will definitely have extremely great power.

At this moment, there were less than five seconds left before Xiao Yu's fleet and the ghost clan converged.

At the moment when Xiao Yu's fleet and the ghost clan converge, the gravity bomb will also just arrive, and then, it will explode with a bang, dealing a double blow to the ghost clan and Xiao Yu's fleet.

"What a vicious move, such a strong decision!" Xiao Yu looked at Luka's fleet deadly, his mind was spinning rapidly, but Xiao Yu couldn't think of any way to deal with it.

"The fourth-level civilization has mastered the proton-neutron level matter decay jishu, and mastered the faster-than-light navigation, but the most important point is that the fourth-level civilization has unified the four basic forces of force, weak force, electromagnetic force, and gravitational force, so the weapons of the fourth-level civilization are all kinds of force field weapons! The gravity bomb is also one of them, and at the moment of explosion, a huge amount of energy will be converted into gravitational waves, causing a devastating blow to everything in the surrounding hundreds of kilometers! It's indefensible! I carry tens of thousands of such weapons! Damn mechanical civilization, you don't stand a chance! The Ghost Clan and you will be killed by me! At this moment, Xiao Yu's communication channel was full of arrogant laughter from the commander of Luka's fleet.

"Unify the four basic forces into one...... Xiao Yu stayed there for a moment.

Gravitational force, electromagnetic force, strong interaction force, weak interaction force, are known as the four fundamental forces. In previous scientific research, human beings have unified the three basic forces of electromagnetic force, strong interaction force, and weak interaction force, and confirmed that they are different manifestations of the same force, but human beings have never been able to unify gravity.

Human beings have carried out protracted research for this reason, and even the theory that can unify the four basic forces has been called the great unification theory, and its importance can be imagined, but Xiao Yu has not studied the great unification theory until now.

Now, Xiao Yu knows that the theory of great unification is a field that can only be accessed by fourth-level civilizations. The force field generator and the gravity bomb, these two weapons, were born under the framework of the unified theory.

After mastering the theory of unification, you can convert energy between the four forces, which is also nuclear fusion energy, Xiao Yu can only make energy cannonballs, and the fourth-level civilization can convert these energy sources into gravity and make gravitational cannonballs.

This is the scientific and technological leap brought about by the progress of basic theory.

"Am I really going to be killed here by them today?" A little despair flashed in Xiao Yu's heart.

At the moment of the arrival of the gravity bomb, Xiao Yu's energy cannonball attack had also reached Lucca's fleet. But in a hurry, Xiao Yu's attack was not strong, and a salvo only killed a dozen Lukka spaceships. Looking at the gravity bomb again, it rushed into Xiao Yu's fleet group at an extremely high speed, and then, it exploded in an instant.

At the moment when the gravity bomb exploded, Xiao Yu sensed an indescribable gravitational fluctuation. In the center of the explosion point, it seems that a massive star appeared out of thin air, and this star exerts an acceleration of at least one thousand meters per second to all the material within hundreds of kilometers around, and immediately a spacecraft can not stand this huge pulling force and begins to fall towards the explosion point.

Moreover, because the end of the spacecraft close to the explosion point is different from the gravitational force at the end far away from the explosion point, under this gravitational gap, the hull of the spaceship began to be stretched and lengthened, and then it was torn apart.

Xiao Yu knew that this kind of force that pulls the spaceship into long strips is called tidal force. Ships that are within the limits of the explosion point Loch will be pulled and torn apart by the tidal force.

Xiao Yu's protective shield is ineffective against gravity. Xiao Yu could only watch as more than 10,000 spaceships were buried under this gravity bomb.

Under the force field coverage of the force field generator, Xiao Yu's spaceship's maneuverability decreased significantly, and it was unable to quickly disperse the distance. Because it is impossible to disperse the distance, the gravity bomb will explode with the strongest lethality.

At the moment when the gravity bomb exploded, Xiao Yu detected that the ghost clan had also come to his fleet. This gravity bomb reduced the overall radiation intensity of the ghost race by 0.5 percentage points.

A salvo of energy cannons from 180,000 spaceships reduced the overall strength of the Ghost Race by five percentage points, and a gravity bomb reduced the overall radiation intensity of the Ghost Race by 0.5 percentage points.

The powerful power of the gravity bomb shocked Xiao Yu in his heart.

"The Ghost Clan is here...... They are thousands of times stronger than the Wood Spirits, and I don't have any possibility of fighting them. Hey......" Xiao Yu sighed and gave up any action to resist.

However, the next moment, Xiao Yu saw another phenomenon that shocked him even more.

This group of ghosts, after reaching Xiao Yu's fleet, did not make any stops, but directly crossed Xiao Yu's fleet and continued to rush forward.

Ahead, is the Lucca Civilization Fleet!

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