In the twentieth year of Ye Kai's cultivation in the Void Retreat, the Demon Emperor of the Demon Underworld Chiyou Demon Emperor and the Houqing Demon Emperor went to the Demon Mi Realm and visited the Qilin Demon Emperor and the Bi Fang Demon Emperor.

After a brief discussion, the Four Emperors left the Demon Realm and went to the Immortal Realm, and the Three Emperors of the Immortal Realm already knew that the Four Emperors were coming before the Four Emperors came, so they greeted them outside the Heavenly Court early.

The gathering of the Seven Emperors, and the Emperor of the Three Realms, has caused a sensation in the cultivation world, and the emperor's travel will cause fluctuations in the energy between heaven and earth, which ordinary mortals may not feel, but for cultivators, subtle changes can be felt.

Those high-level members of the big sects knew that the alien race was about to invade, and the Seven Emperors might have gathered to discuss the matter, but as for the disciples and the small sects and the people like Sanxiu, they didn't know the inside story, thinking that something big had happened.

Just when the Seven Emperors gathered, the Buddha Realm Burning Lamp Ancient Buddha also personally set off from the Buddha Realm to the Immortal Realm, no matter which realm the emperor dispatched, it had already caused a sensation among the cultivators of the Four Great Realms, especially those who did not know the details.

"What the hell happened, why did our emperor leave the retreat place before!"

"Is there going to be a big event? Hurry up and find a way to find someone to inquire!"

"Why are so many emperors coming to our immortal realm, is it possible that there is a big mess in the heavenly court?"

In the midst of everyone's discussions, the emperors began to discuss intensively in the Heavenly Court of the Immortal Realm how to deal with the invasion of foreign races, and at the same time participated in the great sacrifices of all walks of life, these people are comparable to the strategists among mortals, and at the same time, these people are able to calculate what will happen in the future.

Just as the emperors of the four realms were discussing countermeasures, in the distant void, on the two major spaceships, one in front of the other, and on the one spaceship in front, a seminar was also held.

This is a large round table, in the middle of the round table, there is a projection of the four major star maps, this star map was sent back by the exploration team more than a million years ago.

Directly in front of the round table, an alien wearing a hat resembling a crown is the captain of the ship and the commander-in-chief of the expeditionary force, Captain Du Lishan.

With the sudden change of the pattern in the middle of the round table, the original star map of the Four Realms was transformed into the picture of the war more than a million years ago.

In the footage, there are pictures of the great powers of the fairy world and the Buddha world flying around in the void, and there are also pictures of various spells constantly attacking the spaceship.

"Ladies and gentlemen, you don't need to introduce more, you should know that the star field we have arrived at is very large, roughly divided into four star fields, but the distance between these star fields is very close, beyond our imagination.

At the same time, the people here can use magic, and their technological civilization is very low, so it can be said that we are facing a group of indigenous planets.

As for why they were defeated by these natives, it was better to be defeated by themselves, and they should not have come blindly alone without being fully prepared, and in the end they were destroyed by these natives after they had consumed their energy.

We came prepared this time, and at the same time, we have a fifth-generation warship system, which is completely the same as their first-generation warships in terms of protection and firepower.

I'm not worried about their attacks, and I hope that in battle, everyone must remember not to consume our reserve energy.

We must win this war, so that our people will have more living space, and there are many planets here, whether they are survival planets or resource planets, which are enough for our people to survive and develop for millions or even tens of millions of years.

At the same time, I remind you, don't underestimate these natives, their magical destructive power is also very great, if our warships do not have a protective energy shield, they can easily break through, so, in this battle, in addition to the two main ships, before reaching those indigenous planets, send robot warships to explore the reality, and at the same time, the sub-warships are also scattered to go to various planets, looking for a suitable place to establish a base first, looking for alternative energy sources. Captain Du Lishan looked at the crowd and said.

"I will wait for the command of the commander, and I will vow to conquer these natives and find a place for my people!" replied in unison.

In the Heavenly Court of the Immortal Realm, the Eight Emperors gathered, and the Shennong Clan, as the provisional leader of the Four Realms, presided over the consultation of the Eight Emperors of the Four Realms to deal with the invasion of foreign races.

"According to our recent consultations, our four realms have jointly responded to the crisis this time, and all emperor-level and our emperor-level powerhouses will all go to the void outside the four realms to wait for the arrival of alien races, so that the battlefield will be far away from our four realms.

In addition, in the front of the alien invasion, in the area close to the battlefield, whether it is a waste star or a low-level star, all personnel are arranged to defend, and no bases can be established for the alien race.

We have to learn the lessons of that war more than a million years ago, and that glowing weapon of the alien race is very powerful, fast, and difficult to dodge, so I don't want everyone to fight with them, delay them as much as possible, consume their energy, and then carry out a devastating blow.

But this time they came prepared, and it is estimated that the energy reserves will be very sufficient, so our task this time is very difficult, either we defeat the alien race, or the people of our four realms will become enslaved by the alien race.

According to calculations, the alien race is about a hundred years away from us, and the time is already very urgent, so you return to your own realm and immediately start the mobilization work, all the people above the Venerable level will come to the immortal realm to gather, and when the time comes, the tasks will be arranged uniformly, and at the same time, all kinds of magic weapons and pills will be prepared for backup.

I hope you will be ready in fifty years, and you will see if there are any questions that need to be added?" asked the silver-haired, slightly old-looking Shennong Clan, looking at the other emperors with a pair of eyes full of wisdom and depth.

"God Emperor, you have thought very carefully, this time it is related to the survival of the four worlds, so we will definitely work together, there will be no favoritism, in these fifty years, I will definitely mobilize all the things that our demon world can mobilize, you can rest assured!" The one who spoke was the Houqing Demon Emperor of the Demon Netherworld, a man with a burly figure and blue eyes shining with blue light.

"We have no problem in the Demon Realm, we will definitely go all out!" "Bi Fang Demon Emperor also replied on behalf of the Demon Realm.

"There is no problem in our Buddha realm, I participated in the battle with the alien race more than a million years ago, and this time I will not be left behind, my Buddha will fight with the alien race to the end. The ancient Buddha of the lamp twisted the Buddha beads in one hand and saluted with a single palm in the other.

"Okay, since you have no problem, and we have no problem in the Immortal Realm, on behalf of the beings of the Four Realms, thank you in advance, fifty years later, we are here to meet and go together to defend against the alien race. The Immortal Emperor of the Shennong clan saluted with both hands and said.

In the thirtieth year of Ye Kai's retreat, in addition to the Heaven Sealing Technique, all other skills and spells have been mastered, including the Flame Three Slashes given to him by the Chiyou Demon Emperor, he has also completely displayed it, if the Chiyou Emperor knows that Ye Kai can master his fame skills in just a few decades, it is estimated that he will be very angry.

The only regret is that the Chaos Bible has not been able to break through to the seventh level, and Ye Kai has never been able to figure out how to master the laws of heaven and earth, no matter what method he uses, he still can't understand it thoroughly.

If he can't break through to the seventh level, it means that Ye Kai's cultivation is not even in the Tianzun realm, but his current combat power should be much stronger than before the retreat.

In the fiftieth year of retreat, Ye Kai still hasn't broken through to the seventh level, and he can't even borrow the power of the laws of heaven and earth, the only thing is all kinds of skills and spells, he can already play them at will, and even the Heavenly Sealing Technique has been cultivated to the fifth level.

In the past few decades, the powerhouses above the Four Great Realms have all known about the invasion of the alien race, and at the same time, the emperors have also asked everyone to participate in the formation of an alliance to resist the invasion of the alien race.

One by one, figures shuttled through different areas of the Four Realms, always coming and going in a hurry, until this time all the cultivators already knew that there would be alien invasion of the Four Realms, and if they did not resist, the Four Realms would be invaded by aliens, and their homes would either be destroyed or everyone would be enslaved by aliens.

All kinds of materials and personnel also kept transporting and gathering to the fairy world, and in the end, except for some of the people left behind, basically eighty percent of the people who met the requirements came to the fairy world.

The three ancient Buddhas of the Buddha realm, the three immortal emperors of the immortal realm, the two demon emperors of the demon realm, plus the two demon emperors of the demon underworld, there are already ten emperors, but compared to more than a million years ago, the emperor is still a little less.

According to the original arrangement, the battlefield was placed in the void outside the four realms, so the Ten Emperors directly tore the void and went somewhere outside the void, first arranging some enchantment formations and so on.

There are quite a few emperor-level powerhouses, and there are more than a hundred people in the four major realms combined, and as for the honorable level, it can be said that there are probably hundreds of thousands.

In short, there are countless shuttles that come and go directly from the Four Realms, and it is the first time that such a scene has occurred since the existence of these Four Realms.

After all the powerhouses of the Four Realms were gathered in the Immortal Realm, the Ten Emperors personally designated the four highly respected emperors of the Four Realms to command and coordinate their actions.

The Buddha Realm is in charge of the Wheel Saint King, the Immortal Realm is in charge of the Tota Li Heavenly King, the Demon Mi Realm is in charge of the Kunpeng Demon Emperor, and the Demon Netherworld is in charge of the Elf Clan's Great Sacrifice.

At the same time, the Four Realms elected the Wheel Saint King as the supreme commander, followed by the elf clan Grand Priest as the staff officer, Tota Li Tianwang as the orthodox commander, and the Kunpeng Demon Emperor as the deputy commander.

Nearly a hundred or so emperor-level powerhouses were divided into four groups, except for one group scattered to guard the various planets near the battlefield, the remaining three groups were mobile in one group, and the other two groups were led by two commanders each.

As for the honorable powerhouses, they are also divided into many groups, although Guanyin Bodhisattva and others are at the Bodhisattva level on the surface, in fact, their cultivation has reached the emperor level or even the emperor level, but due to the particularity of Guanyin and others, they are mainly arranged to the rear to ensure the safety of the rear of the four worlds.

In short, the combat preparations of the four realms were being prepared in an orderly manner, and Ye Kai in the void also spent decades, but he still couldn't break through to the seventh level.