Although there are hundreds of books, most of them are arranged in order, with only a dozen or so in a messy order.

The lich quickly placed all the gold-embossed magic pattern books in the correct positions according to the magic circle pattern on the notebook.

In this way, the magic pattern formed by these gold-plated runes can be seen at a glance.

However, the magic circle was not activated after it returned to its original position.

"Where's the portal?"

Liz looked at the motionless bookshelf and asked in confusion, "Failed?"

The lich shook his head and said, "No, it's probably due to lack of energy!"

The magic circle has been arranged, but without energy stimulation, there will naturally be no movement.

Annuo walked forward and observed for a while, then found a book in the center of the magic circle with a dull gem the size of an egg embedded on the spine.

The lich grabbed the gem with his hand and with a little force he pulled it off after its magic power was exhausted.

“It should be here!”

The lich looked at the black hole on the spine of the book and said to An Nuo, "Master, as long as you put a source of magic power in here, it should be able to stimulate magic power!"

An Nuo took out a concentrated magic crystal from his storage ring, measured it against the gap on the spine of the book, and found that it was just the right size.

Concentrated magic crystals are consumables required for the Dragon Scorpion Tail Cannon Sword.

Annuo only had five dollars in his hand.

However, in order to explore whether the conjecture about the portal was correct, Annuo stuffed the crystal in his hand into it without hesitation.

Ding~!

It was like the sound of a hammer hitting an iron block, and the crystal was directly sucked into the groove.

Then, an invisible wave of magical power began to spread around with the crystal as the center.

An Nuo took a few steps back, and then saw that the gold-plated magic patterns were gradually covered with a layer of light.

When all the magic patterns were 'lit up', a large number of magic patterns began to spread in the air with the gilded magic pattern as the starting point, and connected with the magic patterns extending from other gilded magic patterns, converging into a complete magic circle.

"What a masterpiece! I wonder who created this magic circle!"

Looking at the scene of the magic circle taking shape, the lich couldn't help but sigh.

Although An Nuo was only a novice when it came to magic arrays, he at least knew seventh-level magic, and had even carved a divine array himself under Philomena's guidance.

So Annuo could also sense that the magic circle in front of him was very advanced.

After the magic circle was fully formed, an expanding vortex suddenly appeared in front of the bookshelf.

After the vortex expanded to a diameter of two meters, it took shape and became stable.

"Master, we succeeded!"

The lich looked at the portal in front of him and asked excitedly, "Should we go in and take a look?"

Seeing that the portal was very stable and would not disappear for a while, Annuo lowered his head and thought for a while.

The appearance of the portal confirmed the authenticity of Truman's notes and also showed that Antoine really sent hundreds of slaves into the portal at that time.

But here comes the problem.

If behind the portal was the dungeon mentioned in the codex, why did Antoine send so many slaves in there?

The most important thing is how Antoine understood the notebook.

Where did Antoine get these books with gold-embossed magic patterns?

"Ella, let all the adventurers, soldiers, and servants in the manor leave first."

An Nuo was worried that there would be danger when exploring the portal, so he planned to have people retreat first.

This is just the insurance policy.

Antoine should have used the teleportation array more than once.

Since nothing happened to him, Annuo felt that the danger inside should not be very great.

But safety measures still need to be taken.

"yes!"

After Ella responded, she immediately carried out Annuo's instructions.

Although Hansen, the housekeeper and others outside were confused, they all obediently left the manor.

After these people left the manor, Annuo asked the lich, the demon Buck and a group of humanoid summons to use [Shadow Summoning], and then let the shadows walk into the vortex to act as the advance team.

Before the summoned creature's shadow entered the vortex, Anno ordered them to return in five minutes.

If the time is up and Buck has not returned, Annuo will ask the lich and Buck to cancel their skills.

Of course, it is not ruled out that the shadow was killed by the enemy inside after entering.

Less than three minutes after the shadows entered, the lich's shadow walked out of the portal.

"Master, we should be in the hall of a certain building, with a lot of corridors and forks in the road.

When we went in, we fought with the enemies in the hall.

But they are just low-level slimes and some puppet monsters.

After clearing out these monsters, we continued to explore for a while, but apart from discovering some low-level monsters, there was nothing unusual? "

"Only low-level monsters?"

When An Nuo heard that there was no danger inside, he prepared to go in and check it out himself.

Judging from the consumption of magic crystals, the portal should last for another half an hour.

Anno put on the dragon scorpion suit, left Ella outside, and led everyone in.

When An Nuo walked into the portal, he felt dizzy and found himself in a dark hall.

However, Anno has [Night Vision] and is not affected here at all.

Looking back at the swirling portal behind him, Annuo focused his attention on the surrounding environment.

The spacious hall covers an area of ​​over a thousand square meters.

The air was filled with a musty smell. There were some cracks on the supporting pillars and surrounding walls of the hall, and a layer of unknown plants grew on the walls.

At this moment, in addition to the summoned shadows that came in before, there were also some monster corpses.

When An Nuo just came in, the souls of these dead monsters drilled into An Nuo's body.

Just as Shadow's previous report said, they were all low-level third-level monsters.

There are probably about a dozen of them.

In addition, there are some bones of creatures on the ground.

There are eight passages around the hall, and there is a shadow guarding each passage.

"Go explore the way, be more hidden!"

Annuo waved his hand and summoned all the summoned creatures that were not very large one by one. He asked them to collectively summon shadows and began to explore the eight passages.

Then An Nuo looked at the lich beside him and asked, "Do you know where the dungeon came from?"

The lich pondered for a while and said, "My Lord, most of the underground cities were built by some underground race. These races don't like sunlight, so they built their cities underground.

Another type is a military fortress built underground or a stronghold of a certain force.

The last type is a certain organism’s underground laboratory.

Building a dungeon is not easy for an individual to build.

If it is the third possibility, then the owner of this dungeon must be very powerful.

Moreover, individuals must have some purpose in building a dungeon, otherwise they would not spend so much effort and money."

After looking around, the lich said, "I don't know what kind of dungeon we are in now, but it looks like it should be abandoned!"

If this dungeon still had an owner, they should have been discovered when Annuo and his men broke in.

“Antoine buys nearly a thousand slaves every month and sends them here, and this must have happened more than once.

Even if all the slaves were killed, it would be impossible for them to be eaten by these low-level slimes. There must be other secrets in the depths."

As soon as An Nuo finished speaking, Buck returned to the hall from the east passage and said to An Nuo: "Master, there are signs of human activity in the room next to the corridor!"