After leaving the elf's dwelling and heading west, all the way to the west foot of the Holy Bow Peak, in the depths of a whispering forest, in the mountains of the Cave Bottom Mountains, looking up, the ancient tower stood day after day on a green sea.

A day earlier, Fang Yu had seen a stone tower with white walls, standing alone on a hill. But after a day and a night of walking, they finally reached their destination, and looked halfway down the hill at the foot of the ancient stone tower, covered in vines and greenery—near which grew many privet trees, built by the spirits of the ancient Noumerin, like a witness of ancient glory, which had watched over the land since the time of the Scourge of Atherein.

The long lake of the sparkling Manman, with its red ridges inserting into the green forest, has not changed much in the dark forest compared to the previous era. It was only because of the geological changes brought about by the catastrophe that the later avenues bypassed the cave bottom mountain range, turning this area into an inaccessible area and a paradise for adventurers.

They were accompanied by the tower keeper, Milleusmis, or the 'elf' who called himself Anlothor, and a young girl who surprised Fang Yu, with a very cold temperament, long black hair, glasses, and a look that no one could approach.

The tower keepers did not accompany them, they looked elusive, and they often did not see anyone during the day, but at night they always appeared like ghosts near the camp and told them to watch out for something the next day.

But before the morning, it drifted away again.

Most of the others left before Nevad – as Odin described. The Queen of Hades had planned to join them, but due to the guild's urgent summons, she had to change her mind on the spur of the moment. However, the night before leaving, the other party also gave him a special gift - a control glove.

It was the Silver Fire series from Odin's Imperial Workshop, which was much better than what he was using now, increasing the effect of computing power in control by about 15% (the original one was only 10%). And after he upgraded, his computing power also increased to more than one hundred and eighty, so when he used this glove, his computing power could basically break through the threshold of two hundred.

As for the one Luo Yu originally gave him, it was transformed by him and used as a deputy, anyway, after the gloves of his original deputy were damaged in the first battle of Dulun, he never had a chance to repair it, so he simply disposed of it cheaply to the second-hand merchant in the fairy residence.

Of the rest, apart from Odin, there were only two or three left. Among them is Leia, but the two don't know each other, probably because they are both idealists, they can talk quite well.

Because of the ID of the other party's 'Sacred September', on weekdays, Fang Yu only calls the other party Sister Xiaojiu.

Léa told him that she would also give him a gift on the day he left the Hall of a Thousand Doors.

This made Fang Yu look forward to it.

On the day of arrival at the Tower of the End of Summer, exactly halfway through the flickering moon, the beginning of spring in the sense of Aitalia – known locally as the day of candlelight – is the last day of winter twilight, and people light candles in their homes to pray for a prosperous year.

It's just a small solar term. In the wild, adventurers don't bother to do this, so the square plover does not see any flickering candles.

However, when they arrived, it was evening, and they saw a fire-like cloud lying across the west side of the long lake, and a golden light gilded the forests in this area with a dark red light.

The winter scene is separated by the mountain range at the bottom of the cave, so in fact, the southern border has long been a scene of spring recovery, after the ice and snow melt, even the mountains and fields have begun to show a vibrant scene. Fang Yu only silently counted the days, and thirteen days were still the first anniversary of his arrival in Aitalia.

When counting the number of people, Fang Yu found that the girl with a cold temperament who had been traveling with them all these days was missing. He couldn't help but be a little surprised, and went to ask Odin if there was one person missing.

The latter looked at him a little strangely: "Girl, what girl?" ”

This answer made Fang Yu break out in a cold sweat.

He also thought that he had bumped into a ghost, the girl was obviously acting with them these days, and he also saw that Léa had talked to the girl, why Odin looked unimpressed. But it dawned on Odin when he listened to his description.

"What girl?" He rubbed his forehead: "That's washing hands, he left a little beforehand." ”

"Huh?"

This answer at least made Fang Yu have a serious psychological shadow in the next week.

The opening of the Hall of a Thousand Doors took place in the early morning of the next day.

But that night, they were the first to experience the magic of this Hall of a Thousand Doors. Before the silver moon rises, the tower keepers arrive as scheduled and tell them that they can enter the Summer End Tower tonight and stay in the tower for the night.

Fang Yu was a little skeptical at first, after all, the exterior wall of this white tower was mottled, and the masonry was loose in some places, and from the outside, it seemed to have an age, giving people the feeling that it was just an ancient relic handed down from the time of the Noumerin elves.

One wonders how bad the internal conditions are.

However, when he entered it, he was taken aback - because the scene outside the tower was completely different.

Entering the interior, the first thing that greeted Fang Yuan's vision was an open and deep hall, although it seemed that no one had been here for many years, it was not dilapidated at all, and even a little magnificent. Rows of tables and chairs, draperies, and doors stretch all the way to the end of the field of vision.

It's like you push open the door of a hut, but inside it's a huge synagogue, and the dislocation of space is dizzying. Walking on the thick hand-woven blanket, Fang Yu looked at the doors that led to the end, and realized why this place was called the 'Hall of a Thousand Doors'.

And the sky above the hall is even more eye-catching.

Fang Yu raised his head, only to find that there was no vault here, and above his head was a void, with countless bookshelves and books suspended, and spiral stairs leading to these huge bookshelves, like an ocean of knowledge.

But the spiral staircase was not connected to the ground, and it was unknown how to reach it, and the void deep in the bookshelf occasionally streaked through a bright bolt of lightning.

He looked at it for a long time.

This is undoubtedly a half-plane created by a magician, and Noumerin's powerful ancient magic is obviously more shocking than rumored, but how could a Noumerin elf with such a powerful power completely disappear after a disaster?

There are many historical accounts of their presence in the aftermath of the Esselin Disaster, but soon after that, no trace of this civilization was completely lost.

Only the mysteries of Aitalia are left today.

The tower keeper told them not to wander around in the hall, and before the Hall of a Thousand Doors was really opened, the infinite space leading behind the doors would not be able to escape the labyrinth of time and space once they entered.

Fang Yu had a similar experience in Dorifin, and of course he didn't dare to make a mistake.

Besides, it's still in a dream, and it's still real.

Coupled with Odin's words before, he didn't ease his breath for a long time, and he still looked a little dazed until now.

It wasn't the first time anyone but him had been to this place, so it was not surprising that everyone had chosen their own place and had dinner—the plates on the tables and benches would automatically conjure up sumptuous food as soon as they sat down.

Then they rested.

The ceremony to open the gate took place at 10 a.m. the next day.

When the morning came, the light in the hall also brightened, but I don't know where the light came from—Fang Yu looked up, and there were still countless bookshelves above his head, and spiral stairs, and the end of the void where the lightning was churning behind him.

The others awoke one after another, and the tower keeper appeared for the first time during the day, wearing a silver robe, and leading them like a ghost into the depths of the hall.

Entering the depths of the hall, Fang Yu found that there was also a circular square here, surrounded by dense doors, almost causing people to have a dense phobia. Without saying a word, the tower keeper walked to the center of the square and raised his hand.

Suddenly, silver rays of light shot out from the ground, and these rays converged on each other to form a huge pattern.

But because the square was so huge, Fang Yu couldn't see what this pattern was for a while. It's just that someone patted him on the shoulder behind his back and said, "Go ahead, don't be too ashamed!" ”

Fang Yu didn't have to look back, he knew that it was Odin.

Anyway, what this man says is not going to make people happy.

He took a light breath, then nodded and walked forward, but it was at this moment that Leia also walked out from the side and took out a wrapped gift and handed it to him: "Be careful, work harder, don't give up——! Fang Yu took the gift with some surprise and started with a heavy one.

He tore open the package, only to find that it was a book, called "Travels of Aitalia". "I love this book," Léa said, "but the author is unknown, but he is very knowledgeable and beautifully written." ”

Fang Yu didn't know what to say for a while.

Most of the other people gave him equipment, potions, and other things. But only this lady who was the head of the regiment gave him a book with ingenuity, and looking at her, it seems that she really cherishes this book. He didn't expect for a moment that Miss Leia was still a literary girl.

But after thinking about it for a moment, he put the book away.

This bizarre world is what attracts them to this land. Although many years have passed, there will be some changes in people's hearts, but in everyone's heart, in fact, the original dream is still hidden in the end.

Miss Léa's book may be a portrayal of her ideals back then.

And that's what he's pursuing.

He put away the book and thanked the other party, but in the afterglow of his vision, he saw An Lother beckoning to him from afar. Fang Yu didn't dare to slack off, and hurriedly said goodbye to Leia before walking towards the center of the square.

When he came to the tower guard, Ann Lother spoke:

"Pick a door."

"What happens after that?" This time, Fang Yu planned to ask first.

"You don't have to worry about it," replied Ann Lother, "and when you pass through the first door, you will know what to do." ”

Fang Yu looked at the dense doors up and down, and asked, "Is it okay to take any door?" ”

"It's best to go in through the green door."

Fang Yu saw that the different doors were divided into red, green, and blue, so he nodded, and walked towards the small green door at the bottom. Before he could get closer, he heard a voice come from his heart:

"The green door symbolizes knowledge."

"The blue door symbolizes a challenge."

"The red door symbolizes danger and opportunity."

It was the voice of Ann Lother, and with that sound the door opened in front of it.

Fang Yu was startled, but after a pause, he found that the other party didn't seem to notice Miss Tata's appearance, so he was relieved. He couldn't help but think of another soul inside him, which hadn't moved for a long time since he left the Ash Mountain.

The thought flashed through me.

The green wooden door in front of it was slowly opening, and there was no room to see from behind the door, only a huge whirlpool, which seemed to obscure all scenes.

Fang Yu looked at this scene and hesitated. But again, the voice of the tower keeper came: "Don't be afraid. The latter took a light breath, then nodded and stepped in.

As soon as you enter the door, the scene in front of you also changes.

First of all, when the previous circle was activated, the buzzing sound in my ears disappeared, and the room seemed to be isolated from the outside world, and there was silence. There seemed to be light in the room, and he opened his eyes and was stunned for a moment—it was a small study, a desk, with scrolls spread out on the table, and horizontal bookshelves on both sides, and the longitudinal narrow room was strewn with books of all sizes scattered on the floor, leading to a floor-to-ceiling window at the end.

The light flowed in through the window, soft, like the sunshine of spring.

In front of his desk, an open giant book, displayed on a wood-based brass base, half a man tall. The room was brightly lit, with strange symbols written on the open pages and a large graphic rune drawn on one side.

If you are an ordinary person, you may be a little confused when you see these mysterious symbols and patterns. But in Fang Yuan's eyes, these things couldn't be simpler, to be exact, they were the foundation of an alchemist.

Runic single words, with single arrays.

A single array is an alchemy array with only one function.

It is the most basic unit of alchemy composed of runic words that mobilize the flow of ether in one direction.

The single array is an ancient product of the era when alchemy was born, and now almost all alchemy arrays are compound arrays, and the single array has already existed in the history books in Aitalia. To this day, however, it is still a compulsory course for every alchemist's apprentice.

Fang Yu looked at this big book, and couldn't help but think of his study experience in Kapka, it was not too long, as if it was yesterday.

However, he didn't quite understand the purpose of the book's presence here, and looked around the room, which was crowded and seemed to have no other exit. It was only when I looked up that the ceiling of the room was quite high.

And in that place, there was actually a small green door.

The exit is there.

How did he get up?

With the glittering ability of an angel? However, Fang Yu tried it and found that he could not summon his own constructs in this mysterious space, and even if he took out the clockwork fairy hanging from his belt, he could not have any connection with its core crystal.

This space seems to have the ability to isolate the ether.

Fang Yu thought for a moment, and also felt that this trial might not be so simple, if the angel could take him to flicker up, wouldn't it be easier to come in through the flying boots? He then began to take a closer look at his surroundings, and then he noticed some details.

There were some red gold plates scattered across the floor.

And red gold is a good conductor of ether.

At the same time, he was very familiar with this cheap material, because it was something that every alchemist would come into contact with during his apprenticeship, and he had to handle it when they practiced the formation for the first time.

Looking at the big book, and then at these red gold plates, Fang Yu suddenly understood what he was going to do in this place, to let him carve the formation.

But what's so hard about that?

After all, he was no longer an apprentice, and at that time he had to carve a single array, and even need to use a chisel and hammer to hammer on the gold plate, and carve out the array seal one by one—and the alchemy array was a very rigorous thing, and the slightest mistake in the magic circle would be scrapped.

And now, as long as he picked up the gold plate, his mind flashed, and every required structural point was connected in the dark, and the magic circle in his hand was naturally formed. Even the single formation is not a challenge for him at all.

As soon as the engraving on the gold plate was formed, it immediately flew out of its hand, forming a staircase in the room.

And at this moment, the big book also turned a page, but there was still a single array on it. When Fang Yu saw this scene, he completely understood, this room was the basis for testing the alchemist apprentice and portraying the alchemy array.

He looked at the height of the ceiling, which looked like it was about seventy or eighty steps to reach, and this number was almost the total number of single arrays that alchemists had invented since the time of Noumerin.

Now that he understood the principle, Fang Yu no longer wasted time and began to lay the ladder step by step.

The big book kept turning the pages repeatedly, but on the seventeenth page, Fang Yu experienced failure for the first time. It was about a little distraction, and the accuracy of his depiction of the circle this time was about 90%.

Of course, this accuracy is high enough, because generally speaking, it only takes more than 70% accuracy to form a formation, but even so, when he formed a formation, the gold plate in his hand still did not respond.

Fang Yu was slightly stunned, and subconsciously tried several times, each time to improve the accuracy step by step - until ninety-seven percent, the red gold plate flew out of his hand, forming the next step of the ladder. Fang Yu couldn't help but gasp when he saw this scene, and only then did he realize the power of this place.

It actually requires the accuracy of the formation to be at least ninety-seven or above before it can be considered passable.

And after Du Lun made up the basic knowledge, Fang Yu was no longer the little white before, and he did not have a basic concept of the accuracy judgment of an alchemist. He certainly knew at the moment what 97 percent accuracy meant.

This means that at least two-thirds of the craftsmen are eliminated, as it is almost impossible for them to do so.

That's the first door.

Fang Yu couldn't help but raise his head, and took a deep look at the door on the ceiling, realizing for the first time the extraordinaryness of this hall of a thousand doors.

……