Being at Hogwarts, something's not right with this system.

Thanks to the Felix Felicis, Lin Yu was able to fully integrate the many techniques and memories he had acquired.

Moreover, due to the improvement of the Great Evolution Heaven-Reaching Technique, he was able to make a preliminary observation of the magical nature and true meaning of this world.

This even led Lin Yu to develop a new magic spell himself.

In addition, Lin Yu had more ideas as a result.

He discovered that the magic in this world is actually very idealistic; to put it bluntly, it's the power of 'thought'.

As long as you firmly believe that you can do it, and as long as the world allows it, then you definitely can.

For example, some children can become out of control before they reach adulthood, or even before they start school.

For example, Neville was once thought to be a Squib by his family, and was later thrown off the building by his family, either accidentally or intentionally.

As a result, Neville finally showed his talent as a wizard, swelling himself up almost like a balloon, which prevented him from falling and getting seriously injured.

And then there's Harry, who had his cousin Dudley locked in a room in a zoo with snakes.

These supernatural acts are magic, but they didn't use any spells, so how did they do it?

To put it bluntly, it's idealism.

"Believe in the power of your imagination, and you will be able to do anything," Lin Yu said, his eyes narrowing as he thought of the three unforgivable curses.

That is, Avada Kedavra, who rips out one's soul and bones.

They are also known as the Killing Curse, the Cruciatus Curse, and the Imperishable Curse, respectively.

For the three Unforgivable Curses to take effect, immense faith is required.

You must have a strong determination to kill your target for the Killing Curse to take effect.

That's why, in the original story, the fake Moody said that the students' Avada Kedavra spells would at most only make him bleed from the nose.

Similarly, Harry's Crucifixion Curse could only cause Bellatrix to cry out in pain.

This is the most typical manifestation of idealism.

Lin Yu couldn't help but recall an anime he had watched before his transmigration: The Funeral of Frillien.

The magic in that world also seems to be idealistic.

Although Frilian has a magical ability, also known as a blue bar.

However, Frillie's setting is that unimaginable magic cannot be used.

For example, if a character's magic is cutting, then it's only natural that her magic can cut anything that can be cut.

However, if it's something that can't be cut, then it absolutely cannot be cut.

It's an illogical kind of magic. If you think a piece of paper can't be cut, then it absolutely can't be cut. If you think the Earth can be cut, then it absolutely can be cut.

Lin Yu looked down at the wand in his hand, then suddenly swung it forward: "Wind."

With a whoosh, a gentle breeze suddenly blew out from the tip of the wand, just like Lin Yu had done when he bought the wand.

However, this time, Lin Yu was consciously trying to create a stir when he displayed this behavior.

Lin Yu narrowed his eyes, a new idea forming in his mind. He not only wanted to create wind, but also planned to use shapeshifting to change the shape of the wind, and even its quality.

He wanted to compress the wind and then unleash it as a blade-like attack.

"Wind Blade".

Lin Yu added more words to the vocabulary and waved his wand again.

At first, the tip of the wand remained unchanged, but slowly, the surrounding air began to condense and, as it continued to compress, a pale green, crescent-shaped "matter" began to form.

This was exactly what Lin Yu had in mind.

"go."

Lin Yu flicked his wand, and a wind blade shot out, slamming into the wall with a hiss.

Lin Yu looked up and saw that where the wind blade had disappeared, a rather shallow mark had been left on the wall.

"Interesting. Just as I expected, the magic in this world is the power of the mind," a dangerous glint flashed in Lin Yu's eyes.

At the same time, he remembered a certain incantation and chanted, "Divine Shadow Without Edge."

The wand remained motionless.

"No, it's Divine Edge Without Shadow," Lin Yu recited the incantation again.

Because he watched the movie for too long, he misremembered the spell.

This time, although the tip of Lin Yu's wand remained unchanged, only he could sense that an invisible 'thing' had flown out.

This is magic invented by Snape in his identity as the Half-Blood Prince. It doesn't show any obvious signs when it's activated, making it impossible to defend against.

Moreover, this magic is very dangerous, and may even be more lethal than the so-called Avada Kedavra.

If Lin Yu's wind blades still have visible trajectories, then the Divine Edge Without Shadow is an invisible blade that can perhaps cut through anything.

"In that case," Lin Yu didn't put away his wand, but instead uttered a dangerous spell: "Avada Kedavra."

Lin Yu's wand suddenly released a green light.

It is the Killing Curse, commonly known as the "Gnawing on a Melon".

As one of the three unforgivable curses, this magic is also the most dangerous.

With absolute killing intent, this magic can kill almost any life it strikes.

The reason it is said to be almost rather than absolutely is because creatures like the phoenix can avoid death. After all, phoenixes are virtually immortal; they can be reborn from the ashes through nirvana.

Through various attempts, Lin Yu once again confirmed that the true essence of this world is idealism.

As long as your belief is firm enough and your ideas are bold enough, you will be invincible.

You can even unleash any magic you imagine.

However, similarly, if you don't even believe in yourself, then you will find it difficult to master any magic.

"Then is it possible to convert magic into spiritual energy?" Lin Yu couldn't help but bring up this idea again.

Since it is a world of idealism, if he wishes for the spiritual energy he needs to appear in this world, is it possible for him to succeed?

Or, if he firmly believes that he can convert magic into spiritual energy by setting up an array, is that feasible?

Or does he intend to continue his in-depth study of the nature of magic, and then improve the array until he finds a way to convert it into spiritual energy?

"Suddenly, I'm finding this more and more interesting," Lin Yu muttered to himself.

At the same time, he realized that he had wasted too much time here, and it was probably almost curfew time.

Lin Yu stopped dwelling on it, put away his wand, turned around, opened the door to the Room of Requirement, gave the Fat Lady's password, and returned to the Gryffindor common room.

In the common lounge area, in front of the fireplace, Hermione looked up at Lin Yu.

Lin Yu was surprised; he hadn't expected her to still be resting.

The lights in the common lounge area were all turned off, with only the firelight from the fireplace providing some illumination.

The temperature in the Scottish Highlands is still quite cool. Not only does it snow normally in winter, but even now, in September, the fireplaces are already lit, otherwise it would be really cold at night.

"Why aren't you asleep?" Lin Yu walked over and naturally sat down next to Hermione, shamelessly reaching out to take Hermione's hand.

Hermione tried to pull away, but Lin Yu wouldn't let go, so she gave up and asked, "What exactly are you talking about this afternoon, the dantian and spiritual energy?"