Nicolas Flamel's decision was not a spur-of-the-moment thing.
He has his own agenda.
Besides helping Silan expand the space inside the box, he also wanted to demonstrate his Alchemy to test Silan.
"Is this child really cut out for Alchemy...?"
Thinking this, Nicolas Flamel waved his wand, and rays of light of various colors burst forth from it.
As he cast the spell, he explained, "The materials used in this box aren't very good, and this size is actually its limit."
"To expand it now, we must first use Ancient Runes to forcibly increase the material's load."
As he spoke, Nicolas Flamel, without using any carving tools, simply waved his wand like a conductor conducting an orchestra.
Some of the Spells swelled into enormous Ancient Runes, while others exploded into tiny symbols, eventually flying into the sky.
Although Silan was somewhat prepared, he was still shocked by Nicolas Flamel's Alchemy.
"Is it possible to embed Ancient Runes directly inside a box using Spells?"
If we consider only Alchemy, Nicolas Flamel is indeed the foremost alchemist of his time.
With his help, the box expanded several dozen times in the blink of an eye.
It stretches as far as the eye can see.
The expanded area was somewhat bare, without even a patch of soil.
The sky never covered the entire space.
This made the place where they stood seem like a small, isolated island on a completely different level from the outside world.
Nicolas Flamel suddenly stopped, turned around, and asked, "What do you think should be done with the lake and the trees?"
This is a test.
After looking around at the vast, almost empty space outside, Silan fell into deep thought.
He had previously used his Wizard's Eye to examine the flowers, trees, soil, and lakes in the space.
Without exception, they are all true.
He guessed that Dumbledore had probably used magic to transplant things from the outside world into the country.
The box originally had very little space, so even if those things were moved in, it wouldn't take much effort.
But now the space has expanded dozens of times.
Trying to use transplantation as a solution would be incredibly foolish, and the cost would be prohibitively high.
"Master Nicolas Flamel, you once said that Alchemy is a science of change, magic that brings something from nothing, a creative process filled with imagination," Silan said after a moment of contemplation.
Hearing his words, Nicolas Flamel nodded in satisfaction.
"It seems you already have a guess. Tell me about it."
Silan did have a bold guess in his mind, but even he found the idea somewhat absurd.
"I guess you're planning to use smelted, high-purity magical materials as the foundation."
"Then cast a spell to turn it into something like trees or soil."
Silan voiced her suspicions.
"Ah..."
Nicolas Flamel nodded, both surprised and pleased. "Your guess was absolutely right."
Silan frowned and asked, "If that's the case, doesn't that mean Alchemy can create its own world?"
"That's how it is in theory."
"Theoretically speaking? You can't even do it?"
"Although I have spent my whole life pursuing this realm," Nicolas Flamel sighed, shaking his head, "I regret that I have never been able to set foot in it."
After saying this, Nicolas Flamel continued casting the spell.
He took out the smelted, high-purity materials and tossed them into the air.
The brown stones fell to the ground, and the soil instantly grew wildly, covering the entire space.
The green stone was pulverized by Nicolas Flamel's Spells, and then blown away by a whirlwind.
The fragments fell onto the soil.
Green grass sprouts from the soil, and saplings grow into Forest in the blink of an eye, with beams of light weaving through the vines.
Nicolas Flamel took out one document after another, cast Spells on them, and transformed them into lakes, mountains, blue skies, and white clouds.
The whole process was like the creation of the world by gods.
What were two separate areas on different layers a moment ago have now completely merged into one.
The dense forest was even larger than the Forbidden Forest at Hogwarts, the vast, clear lake stretched as far as the eye could see, and a small hill rose in the distance.
Norbert, huddled in the cave, trembled with fear at the sight of this earth-shattering power.
"These old men are terrifying dragons..."
After doing all this, Nicolas Flamel asked again, "Can you tell the difference?"
This is another test.
Silan took a deep breath, took two steps forward, and activated the Wizard's Eye.
The whole world blurred in his eyes; flowers, trees, mountains, and lakes all became outlines drawn with lines.
In Silan's eyes, the whole world shimmered with a faint glow, and magic flowed within it.
"Alchemy can actually achieve this level...?" Silan suppressed her shock and gave the answer.
"The things Master Nicolas Flamel creates are constructed from magic circuits, and rely on the flow of magic to give them corresponding physical properties."
Take soil as an example. Although the soil produced is not entirely real, it still possesses the properties of soil.
It can be used to support plant growth.
Upon hearing the answer he wanted, Nicolas Flamel nodded repeatedly. "Good eye."
This left him both satisfied and surprised.
For a young wizard who has just finished first grade, being able to answer two questions in a row is already quite impressive.
With such talent, if one continues to study, it is indeed possible for them to achieve something in Alchemy in the future.
But this was far from enough for Nicolas Flamel.
"But..." Silan asked, somewhat puzzled, "This seems somewhat similar to Transfiguration?"
Nicolas Flamel gave a half-smile.
Silan realized what was happening and guessed, "Could it be that Transfiguration is a branch of Alchemy?"
"Not entirely correct." Nicolas Flamel shook his head.
"Transfiguration is a rather great and magical system, but modern Transfiguration is not complete."
"Incomplete?" Silan, somewhat puzzled.
"Actually, Alchemy and Transfiguration had something in common in their early stages."
Nicolas Flamel began his lecture.
"Initially, the steps of Transfiguration were to first purify the object through melting, and then use that as a basis for Transfiguration."
"But smelting is too difficult, Fiendfyre is too fierce; most wizards can't control it well."
"Therefore, modern Transfiguration omits the smelting step and directly applies the spell to the object."
"This makes Transfiguration more convenient, faster, and more efficient, but it also creates some shortcomings."
Silan understood.
To recreate such a box, he would need to learn not only Alchemy but also Transfiguration.
This is indeed a considerable challenge.
At this point, Nicolas Flamel looked at Silan and asked a question.
"Now, do you still think you can make this kind of box within three years?"