Located in the heart of hell, the Demon King's Cave is a cavern, lair, and mountain rock area with a diameter of several kilometers long.

The terrain here is steep, and there are naturally three moats.

The three moats surrounded the Demon King Sanctuary in the very center, which was where Mephisto was at the moment.

Those moats are formed by cliffs, connected by iron chain bridges, and between each moat, there is a wide abyss, and in a place like hell, the abyss is naturally not water, but a sea of hot molten lava! If you accidentally drop it, you will be submerged and melted into blood in an instant.

And near each trench, there are a large number of demons stationed, and from the first trench defense line to the third trench defense line, the further back, the stronger the demons stationed!

It is the four great demon generals, and none of them dare to say that they can break through this second line of defense of the Heavenly Trench.

But now, those four humans have all hit the second line of defense of the Demon King Temple?

This...... It's incredible!

It is no wonder that Mephisto, who has always been calm and calm, closed his eyes and recuperated, also opened his eyes when he heard the news, and a trace of surprise flashed on his vicissitudes of life.

"Magic ...... Lord Demon. The old demon servant next to the throne hurriedly said respectfully when he saw the Hell Lord wake up.

The four demon generals and dozens of high-level demons below also bowed their heads, and their postures were extremely respectful.

"Is that powerful mage you just mentioned a bald woman?"

Mephisto's hoarse voice asked, not angry, but self-assured, and suddenly there seemed to be an eerie and terrifying atmosphere that permeated the entire Demon King Temple. This is the horror of the Hell Lord!

The demonic spy knelt even lower, and immediately replied in a trembling and frightened manner because of the fear of the Lord of Hell on the throne opposite, "Enlightenment...... Lord Qiyu Demon King, the human mage, is a man. ”

"Oh?"

Mephisto frowned.

As far as he knew, the most powerful mage in the world, and the only one he feared, was only a female supreme mage named Gu Yi.

Although the ancient one's magic body is weaker than him, he controls all kinds of ancient and mysterious magic secrets and methods, and Kama Taj still has many powerful magic holy weapons, which is the main reason why he feels jealous and does not dare to invade the human world rashly under the protection of the ancient one.

And since the mage who broke into the Demon King's Cave in the Heart of Hell is a man, it naturally means that the other party is not the Ancient One.

But, if the other party is not the ancient one, who will it be?

It made him curious.

The four great demon generals of hell on the four seats below couldn't help but breathe a sigh of relief when they heard the news and then deduced that the human mage was not an ancient one. They knew very well that even if these four quasi-demon king-level demon generals joined forces, they would not be the opponents of the Supreme Mage.

Of course, except for the Supreme Mage Ancient One, in the human world, they had not heard of the existence of any powerful mage guardians.

"Your Excellency the Demon King, please allow us to meet those four humans outside for a while!"

These four quasi-demon king-level demon generals are the attributes of wind, thunder, water, and fire, each of which holds the most powerful wind, thunder, water, and fire magic power in this hell dimension, and uses four powerful demon bodies with different attributes to prove the terrifying-level life level.

In the entire Hell Dimension, except for the Hell Lord Mephisto, it is the four of them who occupy the position of top combat power! Absolute one demon king, above ten thousand demons!

"It's good!"

Mephisto thought about it for a moment, then nodded and allowed the four demon generals to make a move, he waved his hands full of sharp nails, and said in a hoarse voice, "Go ahead." ”

After all, he himself is the dignified King of Ten Thousand Demons, the absolute master of this hell world, naturally he shouldn't just take action casually, do you want the Dimensional Demon God's compulsion? Even in the case of such a strong enemy invasion, the first thing should be the general under his command to solve it. Unless even their four demon generals can't withstand it, he will not really appear at that time.

"Obey the order, and the subordinates will wipe out those four humans! Take your souls and come to worship His Excellency the Demon King! ”

The four demon generals of wind, thunder, water and fire bowed their heads in unison, and then got up, moved the huge demon body that was more than ten meters high, and stepped towards the murderous brisk steps outside the temple gate......

On the other side, in the heart of hell, the four Qi Yu masters and servants were almost about to break through this second heavenly trench defense line.

This second line of defense on the periphery of the Demon King Sanctuary is fully stationed with several high-level demons, dozens of medium-level demons, and hundreds of low-level demon minions, as well as the existence of natural terrain advantages, which are easy to defend and difficult to attack. In addition, there is a powerful and eerie magical defense array. Not to mention those high-level demons, even if a quasi-demon king-level demon comes, it is very likely that there will be no return!

Unless the four quasi-demon king-level demon generals join forces to fight, they will be able to break through this line of defense, but it will be relatively reluctant.

However, when the four demon generals rushed here with huge demon bodies, they suddenly found that the defense line here had actually fallen, all the demon guards were wiped out, and the pitted and broken rocky ground was covered with demonic corpses.

And their souls have also been collectively emptied!

It is true that the souls that floated out of those demon corpses were actually devoured and absorbed by Doctor Doom.

And Doctor Doom's magical aura has also strengthened again after devouring those demonic undead! If it was still at the level of the terror-level peak when he first entered the Demon King Cave, then now it can be said that he has reached the level of the terror-level peak maturity stage!

"Oh my God......"

Looking at the lifeless corpses of the demons scattered all over the ground, the four demon generals of wind, thunder, water and fire, their faces couldn't help but widen their eyes, and their faces were full of horror.

Even the second line of defense that would have a headache under the joint efforts of the four Hell Quasi-Demon Kings was completely defeated by the four humans in front of them in such a short period of time?

Even, none of these four humans looked like they were injured!

This...... It's incredible!

However, what the four demon generals didn't know was that in fact, the current situation was still formed when Qi Yu, a really powerful character, did not make a move, and only three terrifying-level servants made a move.

Otherwise, if Qi Yu also joined the battle, tsk, I'm afraid that it would only take a snap of his fingers to completely collapse this second line of defense of the Heavenly Moat.

"Huh?"

Seeing that there were four more demons on the opposite side, and they looked like they were more than ten meters tall and huge, and they knew at a glance that they were not ordinary demons, Qi Yu couldn't help frowning slightly.

With the help of the most systematic evaluation function, he scanned the past with a lack of interest.

I was shocked to find that these new huge and hideous demons were all terrifying-level lifeforms!

"Hmph, finally a few decent opponents."

The corners of Qi Yu's mouth raised, he smiled lightly, and said secretly in his heart, "Forty thousand experience points, sent to the door." ”

——

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