The dwarves finally left with the two gifts Kael had given them.

The thousand dwarf craftsmen, just as when they came, again drilled into the box space, carried by Balin and Fili through the fireplace to Dale first, then returned to the Lonely Mountain.

Of the two gifts, the dwarves preferred the silver flask that could produce fine wine.

This magical gift even became a symbol of friendship between the Lonely Mountain and Weathertop, becoming an essential item at every banquet held in the Lonely Mountain.

With the dwarves' departure, Hogwarts Castle instantly became quiet as well.

As for Mayor Graeme Tenderlarch of Bree and the Prancing Pony innkeeper, they returned directly to Bree through the fireplace the day after the banquet, only having their accompanying coachmen and militia return by the original route.

In the huge castle, only Kael, the three Elven siblings, Legolas, Beorn, Bilbo, steward Edward, and Village Chief Luke who came up the mountain every few days to report remained.

The castle's construction was complete, but Kael's work was just beginning.

The current Hogwarts Castle only had its form but couldn't yet compare to the Hogwarts School of Witchcraft and Wizardry in the magical world.

Not to mention the moving staircases, animated armor and gargoyles that hadn't appeared yet, even the castle itself still needed alchemical runes applied to enhance its resistance to spell attacks.

Besides this, Kael had also promised to teach Arwen and the others magic.

Following the principle that herding one sheep is the same as herding a flock, Kael simply gathered together all those who possessed wands to teach them all at once.

Inside the tower, Kael specially set aside a room as a classroom.

He stood at the front as the magic professor.

Below sat five students: Arwen, Elladan, Elrohir, Legolas, and Beorn.

Under their expectant gazes, Kael took out a copy of "The Standard Book of Spells, Grade 1," lightly tapped the book with his wand, and it quickly duplicated into five copies that flew into each person's hands.

"This is Grade 1 Spells, containing some basic spells and principles as your introductory guide. Everyone take a look."

Elladan looked at the title on the book cover and immediately looked up curiously. "Kael, this is Grade 1 Standard Spells. Are there also intermediate and advanced levels?"

Kael shook his head. "You're mistaken, Student Elladan. After Grade 1 Standard Spells comes Grade 2, Grade 3, Grade 4, and so on. The spell difficulty increases progressively. Also, remember to call me 'Professor' during class."

"Yes, Professor Kael," Elladan obediently called out.

Kael nodded with satisfaction.

He never expected he'd have a day as a professor.

Looking at the students below with an average age of over a thousand years, Kael felt the experience was quite good.

The subsequent teaching process also made him very comfortable.

The Elves seemed naturally born for magic, and they were extremely intelligent and perceptive. They basically understood with just a hint, learning spells after being taught just once.

Watching Arwen easily release the Lumos spell with the effect of holy light, and even make the light orb float freely away from her wand; Elladan and Elrohir using the Levitation Charm to make two tables dance up and down; Legolas releasing blazing flames and easily controlling their temperature.

Kael could only sigh that when students were too excellent, it made him as a teacher seem useless.

But then looking at Beorn, Kael's gaze immediately became kind.

Here, finally there was a student who could demonstrate his value as a teacher!

Beorn's magical talent was actually quite good, but compared to the Elven race, especially Elves who were at least five hundred years old, he seemed somewhat ordinary.

In the following days, Kael taught the Elves and Beorn spells while beginning to inscribe runic symbols on the castle walls.

These runic symbols contained magical powers of solidity, immortality, waterproofing, and fire resistance, enabling the castle to stand for a thousand years without falling.

The castle was very large, with almost every stone brick needing runic inscriptions. This enormous workload was no less than building the castle originally.

Naturally, Kael didn't plan to do it all himself.

He directly conscripted Elladan and the others as laborers, not even sparing Arwen.

The runic symbols on each stone brick were roughly the same, so after Kael designed the runes, he taught them to Elladan and the others, having them share his work by inscribing runes on every brick wall of the castle.

This was perfect for testing their magical learning progress.

Kael said this with complete righteousness.

Actually, Kael had previously considered having the dwarves inscribe the runic symbols while building the castle.

But inscribing runic symbols required magical power support. Otherwise, simply carved symbols would have no power at all.

So Kael could only regretfully abandon the idea of using dwarves as laborers.

Arwen and the others had no complaints whatsoever.

In their view, having Kael teach them magical arts was the greatest reward.

Not to mention they could also learn a type of magical script they had never seen before.

They considered themselves incredibly fortunate!

Kael was also generous with Arwen and the others. He divided the contents of "The Book of Spells" into Standard Spells Grades 1 through 7, placing everything except some dark magic spells in the library for them to study freely.

He even taught the Elves their favorite Patronus Charm.

However, perhaps because Elves were naturally calm in temperament with peaceful emotions, they made slow progress on the Patronus Charm, which required extremely happy emotions, only managing to produce a few silver wisps.

Conversely, Beorn performed better than the Elves this time, successfully casting a giant bear-shaped Patronus after a month of practice.

The Elves weren't anxious about this, remaining very calm with an attitude of "if I gain it, I'm fortunate; if I lose it, it's fate."

Indeed, extreme emotions weren't suitable for Elves.

Extreme sadness was fatal to Elves, causing them to weaken and die, so Elves had developed restrained, calm habits.

A year passed in the blink of an eye.

Every brick wall of the castle had been inscribed with runic symbols. The dense runes formed an invisible magical array, making the entire castle seem to come alive.

In the Elves' keen perception, every brick and stone of the castle seemed to breathe, no longer the cold stones of before.

At the same time, in the castle corridors were suits of armor that could automatically move and patrol. They held weapons, standing quietly in wall corners.

Those who didn't know would think they were just armor displayed there.

But if enemies entered, they would transform into war machines, tirelessly slashing.

These were alchemical armor guardians Kael had created, 108 in total, distributed throughout the castle, specifically responsible for guarding it.

Besides this, the castle also had many tall statues, including a thousand dwarf statues carved by the dwarf craftsmen.

Originally, to thank the dwarf craftsmen for their efforts, Kael had specifically asked each of them to carve a statue of themselves, then left them in the castle for future generations to admire.

The dwarf craftsmen were very dedicated to this task, striving to carve themselves as tall and mighty as possible.

These stone carvings had been inscribed with runic symbols and enchanted by Kael. They normally wouldn't move, but in emergencies, they would come alive and become an asset to the castle.

The staircases in the tower and castle had also been fixed with spells through alchemy.

Not only could they automatically move left and right, but the steps could also move upward. When people stood on them, they would be transported up, truly a "magical version" of a moving elevator.

Thus, a magical castle had taken considerable shape.

A year's time was merely a fleeting moment for immortal Elves.

They only remembered the leaves falling once, not even feeling the passage of time.

But for Kael, this was the longest job he'd ever done.

For a full year, he had been busy with the castle.

Under the tall golden and silver trees, a layer of golden and silver leaves had accumulated.

Under the influence of the twin trees, everything around had become vibrant with life. The garden was filled with flowers Kael had transplanted from the tower's herb garden.

Among them were the never-fading golden bell-shaped flowers alfirin, snow-thorns with huge white petals, golden star-shaped "sun-stars," and eight-colored "Ent-wives' flowers"...

A graceful Elven maiden came lightly to beneath the mallorn tree, looking up and calling to the tree. "Thorondor, come down for dinner!"

Her voice was ethereal and beautiful, like the morning breeze, pleasing to the ear.

In the tall mallorn tree, at some point an exquisite and elegant tree house and several platforms had appeared, just like the dwellings of Lórien Elves.

A winding spiral white staircase wound around the massive trunk, extending upward all the way, connecting the treehouse and platforms.

On the highest platform, a giant nest was placed there.

Thorondor inside the nest heard the commotion and poked his head out.

Seeing the figure below the tree, he immediately cried out happily with a clear call, directly leaping down from the hundred-meter-high nest, flapping his young wings as he rapidly fell.

The eaglet's wings weren't fully grown yet, and his flying was very awkward, gliding clumsily downward.

He lost his balance in mid-air and suddenly plummeted head-first.

Just as he was about to crash into the ground, the Elf waved her wand, causing the giant eaglet's fall to pause, then slowly descend.

"Coo coo..." The eaglet looked somewhat embarrassed, burying his head under his wings.

Seeing this, the female Elf smiled, reaching out to stroke the eaglet while speaking gently. "Thorondor, you're already doing great! Just keep practicing, and when your wings are stronger and more powerful, you'll be able to fly!"

"Coo coo...?" The eaglet brought his head out, his eyes questioning with some lack of confidence.

"Of course it's true. You're just too young right now. When you grow a bit more, the entire sky will be your domain!" she encouraged gently and confidently.

Then she took out a palm-sized food wrapped in mallorn leaves. "Look what I brought you! This is lembas I made. It can help you grow faster. Do you like it?"

Hearing this, the eaglet cried out happily, affectionately nuzzling her with his head.

The female Elf smiled brightly. She opened the outer leaves, took out the thin wafer-like lembas inside, broke off half, and fed it to the eaglet.

The eaglet swallowed it whole in one gulp, then realized he hadn't tasted the flavor yet.

He immediately looked at her pitifully, anticipating the remaining half of the lembas.

The Elf smiled and shook her head. "Be good, Thorondor. You can't eat too much lembas. What you just ate is enough to keep you from eating for several days. If you eat more, you'll get stuffed."

"Coo coo..." The eaglet nuzzled and acted cute, wearing her down until she had no choice but to agree.

She broke off another small piece and said, "Just a little bit. No more."

The eaglet quickly nodded, then opened his mouth to receive the lembas, slowly savoring it.

"Arwen, you're spoiling Thorondor too much," Kael walked into the garden from outside, his eyes full of amusement but his tone disapproving.

"Lembas is complex and time-consuming to make. What's the difference between giving it to him and casting pearls before swine?"

"Coo coo...!" Hearing this, Thorondor immediately cried out in a series of protests.

What did he mean by casting pearls before swine? How could swine compare to him!