That's really ...... There was enough to surprise Roy.

At the beginning, he still thought how could this be possible, how could the demon open the door of heaven? However, when he flipped through Serren's memories, he realized that it was true!

The Gate of the Abyss and the Gate of Heaven are, in the final analysis, just a kind of spatial teleportation magic, but the difference is that to open the Gate of the Abyss, you need to build a magic array with demon words, while to open the gate of Heaven, you need to build a magic array with angel words.

In the continuous use of angels and demons for millions of years or even longer, these two kinds of space gate magic have actually been very, very mature, and the patterns, words and spells required to build the magic array have almost reached the point where they cannot be changed.

This is probably something that angels and demons can access, and the first type of spatial magic, whether it is used in a positive or reverse direction, is very simple.

So in fact, as long as you have that mind and spend a little time, whether it is an angel or a demon, it is actually possible to learn the other party's space gate magic.

Of course, if you can learn, you may not necessarily be able to use anyone, because demon words often contain dark power, and angel words will contain divine power, if the demon rashly uses angel words, it will definitely be hurt by the holy power, and in the same way, angels use demon words, they will also be eroded by dark power, which is a huge restraint in the attributes of the two races that are natural enemies of each other, if their own strength is not enough to rashly use each other's words, it will definitely not be pleased.

In addition, there is a very important problem, that is, because both sides are not familiar with the situation of the other party's world, so when opening the space door, a random space coordinate is often generated, and before drilling through the space door, no one knows where it will be linked to the other world, so angels and demons who have no strength want to go to the other party's world, it is really looking for death.

Historically, the war between angels and demons has gone on for a long time, but neither has been able to destroy the other, because neither side has been able to destroy the other's lair.

In some periods, it is not without radical angels and demons to form a powerful expeditionary force, and then directly attack the opponent's world, but without exception, these so-called expeditionary forces all failed, whether the angels want to destroy the abyss, or the demons want to capture the heavens, fighting on the opponent's territory, they are naturally restrained by the environment, and in the end they all end in annihilation.

It can be seen from this that it is not surprising that an angel or demon opens the space door of the other world, but if you want to use the other party's words and magic to open the door to the other world, you not only need to be proficient in space magic, but also need to have enough strength yourself.

In the past years, there have been many cases of mutual invasion, but the later they go, the fewer such cases have become, and in today's era, such things as opening the door to each other's worlds have gradually evolved into a trial, a ritual.

Whenever there is a high-ranking demon who wants to become a demon lord, they will try their best to learn space magic and prepare for opening the door to heaven independently, which is why the promotion of demon lord requires knowledge of space magic.

After this demon feels that his strength is enough, then he can open the gate of heaven and enter the heavenly world under the witness of many demons, due to the repulsion of the world, this gate of heaven opened by the demon will only last for a short period of time, what the demon has to do is to conduct a "survival game" in the heavenly world during this time, until the gate of heaven is closed and pushed out, and the ritual is completed.

And when there are demons entering the world of heaven, it often causes the angels to feel the senses, so as to come to expel and hunt, in the same way, there are angels entering the abyss world, it will also attract a large number of demons to hunt them, so if you can open the door to the other world, go in for a period of time and be able to kill the enemy in the siege, and then come back with your whole body retreated, it will be regarded as a great merit and glory!

In order to become a true Demon Lord, such merits must be achieved in order to be recognized, and similarly, if an angel is promoted to Seraphe to become an angel, they also need such a war medal.

After Roy understood the process of this ceremony, he always had the idea of wanting to complain, in game terms, isn't this special just a military merit point?

Spit and complain, but in fact, Roy still sees the danger clearly, yes, this ritual is actually very dangerous!

First of all, the first point, if the demon wants to enter the heavenly world, then from the moment he enters, he will be rejected by the entire heavenly world, just as the abyssal world is filled with countless darkness and flames, the heavenly world must also be filled with countless holy lights, and the demons who enter it will be attacked by the holy light every moment, and it can be said that the power is suppressed to the extreme.

In such a situation, you have to fight against a steady stream of angels, you can imagine how much pressure you will face, coupled with the fact that they are natural enemies of each other, once you accidentally die in battle, even the Ouroboros mark will not protect the demon, and its soul will be captured and purified by the angels at the first time, and it will be truly completely annihilated.

It's no wonder that the pass rate of the Demon Lord's promotion ceremony has always been so low, and in Serren's memory, among the hundreds of millions of demons in the entire Abyss World, the number of Demon Lords is only more than a hundred......

Of course, demons or angels will also hone their own strength when they continue to fight against each other's attributes in the other world, which will cause the demons or angels who return smoothly after completing the ritual will have their strength skyrocketing, and eventually achieve the real body of a demigod and become a real demon lord, which is the reward that can be obtained by returning alive...... Therefore, for millions of years, even knowing that the success rate is very low, there are still demons who continue to attack the heavenly world.

This is also the reason why Serren wants to obtain the protection of Cabelus, because he understands that it is impossible for him to pass the ascension ceremony on his own, and he needs Caberus's root power to protect him from the ubiquitous holy light, so that he can retain the maximum combat power when he enters the heavenly world, so that he can hope to complete the ascension.

Seeing this, Roy thoughtfully asked Bainia next to him, and said, "Bainia, you have been in the abyss world for so many years, have you ever encountered an angel invading the abyss world?" ”

After hearing Roy's question, Bainia was stunned for a moment, and then suddenly said, "Do you mean the trial of the angels in heaven?" Yes, I did encounter it, although only once, but it was about two hundred years ago, an angel opened the gate of the abyss, and the gate of the abyss happened to open in the direction of about three hundred kilometers west of the lair where I lived, and that was a grand occasion, the demons who sensed this angel within a radius of thousands of kilometers all rushed towards the angel, the number was not less than tens of millions, and the angel was piled up to death with the demon sea...... I was still a mid-rank demon at the time, and I followed behind and attacked with magic several times, so that although I was safe and not attacked by the angel, when the angel died, I didn't experience the feeling of killing with my own hands......"

As she spoke, Bainia's face showed a look of regret.

Roy nodded, this kind of image of using the number to drain the angel's magic power and then killing it is easy to imagine......

With Bainia's account, Roy can probably imagine that after the demon enters the heavenly world, it may be a similar situation.

With a sigh, Roy gathered all the remaining troops and said, "Let's go, Serren is dead, and now we should go to the battlefield of Okhaikal!" ”

"Are you going to do something to Cabellus?" Juliel heard what Roy meant, and said with some concern, "Honey, are you sure?" ”

"Whether you're sure or not, you're going to get on it!" Roy's nightmare eyes lit up with a red light, and the pentagram pattern under his eyes became clearer and clearer, he shook his demon claw, and said, "Because the opportunity to meet a lone demon lord is too rare, and it is not so easy to miss this opportunity and challenge a demon lord......"

There is a sentence that Roy didn't say, in fact, in his heart, he still has a big grasp, because he still has a killer weapon in his hand that he has never used, and if he really loses to Cabellus, he will use it without hesitation......

It's just that Juliel didn't know about this, and after listening to Roy's words, Bainia nodded and said: "Indeed, and we still have Isabel in our hands now, she is pregnant with Cabellus's child, and she can make Cabellus throw a mouse, such an opportunity, there really won't be a second time." ”

"Okay, leave the demon army of Ehaikar City to us, and we will do our best to create fighters for you!" Julill Road.

"Lord Osiris, we will do our best to help you!" Giovanni respectfully saluted Roy with his vampire people.

"What else to say? Kill and you're done! Rafalo said a little anxiously: "Let's go quickly, if the coalition forces are killed too much by Cabellus, I won't be able to absorb enough life force to resurrect......"

Roy nodded, flapped his wings and flew into the sky first, flying quickly in the direction of Ehaikar City.

And behind him, a huge black shadow also flew behind Hulala, just like a flock of yellow finches behind the cicada mantis......