Levinder Palace.

The underground secret room of La Fengge.

When General Gadiya and his men hurried away, Rosen quietly entered the basement of Lafeng.

In order to fight against the devil, he raised the intensity of the Soul Burning Secret Technique to an extreme, which put tremendous pressure on his body.

He now feels a little dizzy, which is the aftereffect of overusing his brain.

But it's not a big problem, you will recover after resting for a while.

The power of the devil was indeed amazing. He was really forced into a corner and had to use the Faith Warrior trick.

Fortunately, the result is good.

The soldiers' sacrifice was not in vain. Once he gains control of Levinder, he will erect a monument for them and provide good compensation to their families as a way of making up for it.

Is the demon's power really infinite? Of course not, there is no such thing as infinite power in the world.

In the final moments, Rosen could clearly feel his impatience.

But the power it had demonstrated before was indeed a bit outrageous.

So many Light of Judgment, so many incendiary bombs, so many muskets and spells; although not all of their power was directed at the black fog, it was at least one tenth of it.

If this powerful force hit Rosen's legendary barrier, even a thousand Rosens would not be able to withstand it, but the demon was able to withstand it.

Rosen was very curious about this. He guessed that the devil should have mastered a container for storing large amounts of power, similar to his battery house.

Moreover, this container not only has a huge capacity, but can also store power of very high level and quality, making it definitely a very rare treasure.

This was one of the main reasons why he came to explore the underground secret room.

He could vaguely feel movement on the ground. The Levender warriors were carefully cleaning the battlefield and would probably discover the underground secret room soon, so he didn't have much time.

After resting for a while, the dizziness in his head had improved a lot, so he cast a light invisibility spell and a breathless crystal wall on himself, then continued walking down the spiral stone staircase.

The chamber is very deep, and there are a large number of defensive and warning barriers set up along the way, and various magical traps can also be found.

If he hadn't been sure that the Void Demon had been killed by him, Rosen would not have dared to explore the secret room alone.

Using the legendary wizard's magic circle perspective, Rosen dodged the traps easily, and when he couldn't avoid them, he took action to break them.

He walked down for more than fifty meters and saw a solid ice wall underground, which was almost exactly the same as the ice wall he had seen in the Sea Cliff Laboratory.

At a glance, Rosen knew that the strength of this wall was as high as eight rings, and there was still a trace of soul breath remaining.

His heart was moved slightly: "Oh~ this is really interesting."

He raised his hand and pressed lightly on the ice wall, using legendary magic power that was even more refined than before to carefully sense the structure of the ice wall.

"Compared to the Frost Wall at Seacliff Laboratory, it has been improved a bit. If it were the original me, I would have had a hard time cracking it."

After standing in front of the ice wall for about three minutes, the ice wall once again quietly turned into white mist and disappeared. Behind the door was a heavy rune-marked arcane door, which was locked.

But such an arcane gate can only be used to stop ordinary mages, but cannot stop legendary mages.

After thinking for a while, Rosen took a step forward and condensed a new wall of ice behind him to conceal the movement in the basement.

Then, he checked the various defensive instruments on his body and confirmed that they were functioning well. Then, he held the rapid-fire Vulcan gun in his right hand, placed his left hand on the door, and activated the legendary transformation.

The gate of Okin deformed like plasticine, and a hole appeared that was more than one person tall and one person wide.

Before the entrance to the cave appeared, Rosen had already flashed to the side behind the door.

"Bang, bang, bang~~"

There was a burst of gunfire from behind the door, along with a very crazy voice.

"Let's die~~Let's die together!"

"Bang, bang, bang, bang~~~"

The sound of musketry continued, making the gate of Aojin clank, and at the same time, the sound of footsteps continued to extend towards the door.

About ten seconds later, a black metal gun barrel poked out of the crack in the Okin Gate, and at the same time, heavy breathing sounds were heard.

Rosen grabbed the barrel of the gun and pulled it outwards, while at the same time infusing the musket with legendary power and slamming it inwards.

With a dull 'bang' sound, the musket infused with legendary power easily broke through the magic barrier on the attacker's body and hit him directly between the chest and abdomen.

"Hmph~~~"

With a groan of pain, the person behind the door was knocked back and fell to the ground with a thump.

Rosen then emerged from the crack, entered the Okin Gate, and restored the gate to its original state.

He turned the stolen musket into scrap, then pointed his own musket at the guy sitting on the ground.

This man had blond hair and a pair of ice-blue eyes. In his eyes there was an unconcealable madness and confusion. He was none other than the Frost Messenger Lafeng.

Or to be more precise, it is the last frostbringer, Rafeng.

He was the second reason why Rosen came to explore the secret room.

Evil must be eradicated completely.

The devil is dead, but Lafengge must also be killed completely.

This Lafengge has not yet gone completely crazy and still retains a trace of consciousness. This is most likely not due to the devil's mercy, nor is it because this guy has enough reason, but rather that Rosen acted too quickly and the devil did not have time to transform him into his own incarnation.

"Who are you?!"

Lafenge stared at Rosen.

In his eyes, he was facing an old man with white hair and wearing a simple gray robe.

Of course Rosen would not tell him his real name, nor his pseudonym. He smiled faintly and said, "You are not qualified to know my name."

"You must be a legendary wizard. No, you are Duke Weilan!"

Lafenge guessed it himself.

Rosen was a little surprised. This guy didn't seem as crazy as he acted.

Looking carefully at Lafengge on the ground, he suddenly had an idea: "You are the original Lafengge, right?"

Lafengge took a deep breath and said, "Yes, it's me."

"You used the blood fusion replacement technique to create a large number of substitutes, shared your knowledge with them, and used your own soul fragments as a guide to quickly upgrade them to high-level mages?"

"That's right."

"Now, the demon has been killed by me, but you are still alive. Tsk tsk tsk, you are really good at it."

If Rosen had failed to defeat the devil, and both sides had ended up suffering losses or even died together, this guy might have become the ultimate winner.

Lafenge sighed and said, "Unfortunately, you win in the end, Duke."

Rosen raised the Vulcan gun and pointed it at his head: "Tell me the real name of the devil."

"I don't know, I just know he calls himself the All-Knower."

"Okay, so what's his purpose?"

"And what did he take from you?"

"He didn't take anything away, or at least he didn't have time to take anything away. He has been teaching me all kinds of magic knowledge and helping me improve my strength."

“Although the method of improvement is cruel and has serious side effects, it did help me improve.”

Rosen grinned: "So, this demon simply wants to use you as a body to descend into our plane?"

"That's about right, but I don't know what he wants to do after entering the plane."

“Oh~~”

The devil is dead, and this matter can only remain a mystery.

The ground soldiers would find this place soon, so Rosen didn't want to waste any more words: "Any last words, sage?"

Lafengge sighed: "Never~never believe that there are benefits in the world that will come to your door, and never~never take risks that exceed the limits of your ability."

"Nice last words. I will engrave them on your tombstone as an epitaph."

After saying that, Rosen pulled the trigger.

'Bang!'

Lafengge's head was blown up and his body flew back several meters due to the huge impact force.

This time, he was completely dead.

Rosen walked around Lafeng's headless body and came to the center of the secret room to check the situation.

There is an extremely large and very detailed magic circle here that Rosen cannot understand at all.

There is a cylindrical rune platform in the center of the magic circle, and many cracks have appeared on the platform due to the impact of some force.

Scattered on the ground around the column are many ellipsoidal gems of different sizes with exquisite diamond-cut surfaces. Most of them are colorless and transparent, but a small part of them shine with an ice-blue glow.

"These gems are probably the containers that the demons use to store their power."

"The volume is much smaller than I expected. I wonder what kind of power it can store."

Rosen picked up a fist-sized gem, which emitted an icy blue glow and exuded an aura of pure magic power.

"Eh~ Is it used to store pure mana?"

This discovery surprised him slightly.

He immediately picked up a dull gem and tried to infuse his magic power into it, but he found that as soon as his magic power approached the thing, it was immediately swallowed up.

The more magic power that was probed in, the more it would be swallowed up. As the swallowing continued, the ellipsoid became brighter and brighter, giving a feeling of vitality.

What's even more peculiar is that after absorbing his own magic power, this gem actually took on a faint golden glow and exuded an aura of pure magic power.

This situation surprised and delighted Rosen: "Hiss~ It really can store pure mana, but how much can it store?"

Try it whenever you think of it.

Anyway, the Soul-Burning Secret Technique was always running, and with the power of faith, his mana recovered very quickly.

So he kept pouring it in, and after about ten minutes, which was almost equivalent to thirty tubes of mana, he finally couldn't pour it in anymore.

Looking at the crystal again, it became very bright, showing a rich golden light. After careful inspection, it was discovered that it might be too full. This thing was releasing pure magic power at an extremely slow speed.

Of course, pure mana could not exist in the air for long, so it transformed into a pale golden glow, exactly the same color as the light produced by the natural decay of Rosen's legendary mana.

In other words, this gem can not only store mana, but also has a very large capacity! Rosen's heartbeat suddenly accelerated slightly.

Because according to common sense in the alchemy world, only the soul can store pure magic power.

Countless alchemists refused to believe in evil and devoted their entire lives to the pursuit of magic storage containers, but they all failed in the end, wasting their lives in vain.

Too many failures made the alchemists believe that the magic storage container did not exist.

But now, this thing suddenly appeared in front of Rosen, and there were a lot of them.

He counted them carefully and found that there were more than 70 pieces. If each piece could store a total of 30 Rosens' mana, then more than 70 pieces would be more than 2,100 Rosens' mana.

And they are all legendary mana.

This also explains why the power of the devil is endless.

Rosen felt a deep joy.

The value of a magic storage container is extremely great, and any mage can think of countless applications for it.

If this thing can be mass-produced and promoted, it will be enough to push human civilization to a whole new level!

Even with Rosen's current strong soul, he couldn't control himself and his breathing quickened slightly.

'What elements is this thing made of?'

He used Transfiguration Alchemy to examine it carefully and found that the elements that made up this thing were quite common, but what was truly amazing was its microscopic structure.

It is a very complex and subtle microscopic structure that does not look like a product of natural formation at all.

"Where did this come from?"

Rosen carefully put away the magic stone and then carefully explored the entire secret room.

After some investigation and inference, he came to a somewhat surprising conclusion.

"These stones should have been precipitated directly from the magic ring through a secret method!"

"The function of this broken magic circle is probably to control the precipitation of gemstones."

Rosen immediately carefully examined the broken magic circle and recorded the information about the magic circle into the Laifu database.

After recording, he destroyed the formation completely.

Then, the answer to why the devil has infinite power is found.

The answer is quite surprising.

If possible, Rosen really wanted to resurrect the demon, imprison it, and ask for the specific details of the magic bit by bit.

But unfortunately, the Soul Oath Sword that he had been planning for a long time was too powerful and killed it with one strike.

"Boom~~"

There was an explosion on the ground.

Apparently, Levender’s warriors had discovered the secret room, but they didn’t dare to rush in, so they used various explosive and pyrotechnic spells to force their way through.

Rosen immediately collected all the mana gems on the ground and checked them carefully again to make sure that no mana gems were left behind, not even any debris. Then he walked to the wall, used Transfiguration to squeeze through the wall, and drilled his way out.

He had to study these magical gems and mysterious magic circles carefully, and try to acquire the technology to make them as soon as possible.

Once he can produce mana gems stably, I can’t even imagine the scene.

(End of this chapter)