Felix answered nonchalantly, "That's too far away from you, and I'm still in the middle of researching ..." He avoided the topic of the level six magic spells, because frankly speaking, he had never witnessed a similar spell from other people.

This made him suspect for a moment that the so-called level six magic spells are merely exclusive to him personally.

After all, he had incorporated nearly all of his heart, mind, and beliefs in his fourth year before he was able to master two level six magic spells - 'Protego' and 'Stupefy'.

When he succeeded, he experienced a metamorphosis beyond his imagination, his magic power, and will be sublimated.

To be clear, he was only fifteen years old that year.

And in the next six years, even though his magic theory advanced further, to this day, the number of his level six magic spells is less than ten.

Of course, this is also because he shifted most of his energy towards the study of ancient magic runes.

...

A student raised his hand and asked, "Professor Hap, are you in favour of specializing in one magic spell?"

Felix shook his head as he explained, "For beginners, it is necessary to specialize in one or two kinds of magic, which will allow you to progress rapidly, stand out quickly, and gain the ability to protect yourself. But for the full-fledged wizards, they need to learn more to cope with different troubles."

"Professor Hap, if I practice only one magic from now on, how long will it take me to reach level three or four?" This was Abbott Blake's question.

"Mr. Blake, I don't recommend you to do this. If you have no problems with your grades, you will have a great hope to become an Auror." Felix said.

"Professor, will you include this part in the next dueling lessons?"

"Of course I will, there is no doubt about that."

"Professor, I want to upgrade all of my magic spells to the third level in magic spells, any suggestions?"

Felix said in a tone like he was amused, "Mr. Pardis, you can put more effort into your magic theory. But still, there is no need to do this."

The three professors looked at Felix with different expressions, and to be honest, in their respective fields of expertise, they thought they were no lower than the " Level 5 Magic Spell" that Felix was talking about, but the crux of the matter was...

How would he define a level six magic spells?

This is what intrigued the professors the most.

"Professor McGonagall, what do you think of his theory?" Snape asked in a low voice.

Professor McGonagall said: "This method is not suitable for Transfiguration, but for magic spells, I personally think it's not bad. Filius, what's your opinion?"

Filius offered his insight: "At least in the matter of dueling spells, it is quite applicable. It provided new ideas for me to analyse some classic dueling cases. Of course, as he said, this theory can't cover all magic spells."

During the next few questions, the young wizards seemed to have tacitly accepted his statement about magic levels and kept asking various questions about it.

After about ten minutes, the crowd gradually quieted down.

Felix said, "All right! Let's move on to the next step. We have forty minutes until the end of class, so we'll spend the rest of the time testing and instructing you on the Disarming Charm."

The four professors shuttled through the crowd, divided the young wizards into pairs, and instructed them on the disarming charm.

But many of the young wizards were still scratching their heads a bit -

"Professor Hap has definitely mastered level six magic spells!" Ron said conclusively.

"I think so, too, and he doesn't deny it." Dean Thomas said.

But Professor Hap just won't speak about it, it's so infuriating!

Unknowingly, most of the young wizards agreed with this method of division.

"What do you guys say, what does a level six magic spell look like?" Ron asked.

"Will the spell become bigger and brighter?" Neville asked with a longing look on his face.

"You mean, a bucket-thick magic spell?"

"It's a possibility, isn't it?"

On the other side, Felix said to a small Hufflepuff wizard, "Very good, Diggory, your spell is already quite good."

Cedric said with some formality, "I've been practicing this for a long time now, also the information you gave us was very useful."

Felix nodded in satisfaction and was just about to praise a few words, but he suddenly stopped talking.

Cedric saw that Professor Hap's expression became serious all of a sudden, and he couldn't help asking, "Professor, what happened?"

But Professor Hap did not answer him; his gaze remained in one direction, and his light blue eyes seemed to pierce through the great hall.

"Diggory, I have a temporary emergency, help me inform the other professors." The young professor left in a hurry.

He went all the way straight to the castle tower, and in just a few minutes he was standing in the doorway of his office.

Felix enchanted himself with various protective magic, the protective artefacts under his clothes shimmered with the dim light from magic, and after making enough preparations, he calmly waved his wand and the door opened silently.

The scene in front of him surprised him greatly.

At the doorway, seven or eight dark green devil snares were tightly wrapped around the body of a house-elf, and the green branches shimmered with a greenish glow as if they were breathing.

Felix carefully examined the unexpected intruder, which seemed to have passed out.

Felix cast a Stunning Spell and walked straight into his office.

After double-checking inside and out to make sure there was no risk, he opened the suitcase in the corner and took out a delicate box from it. Felix's fingers brushed over the surface of the box, which lit up with layer after layer of magic runes.

There was no sign of it being cracked.

He opened the box and the diary lay quietly inside it, he let a slight sigh of relief.

Only then did he have the heart to think about the origin of this strange house elf.

After some thought, he took a thumb-sized clear vial out of the ring, which contained about a millilitre of clear liquid.

This was a Christmas gift from Snape.

Felix put two drops into the mouth of the house-elf and woke him up with a Reviving Spell.

About five minutes later, he figured out the whole story.

Felix's emotions were quite mixed.

He looked at the diary, and after a long silence, he said softly: "Sorry, Tom."

A large amount of fiendfyre flew out of the wand, gathered above the room, like a cloud churning on a cloudy day. Under Felix's control, the clouds of fire converged and shrunk toward the center, condensing into a long white sword in midair as if it were solid.

The diary sensed the danger, the page flipped wildly, from which a large amount of black gas gushed out, but these black gas collapsed as soon as it touched the white sword.

Tom's voice came from the diary: "No, I can tell you the secret to overcoming death-"

" Snip!"

The long sword pierced the diary, passing through the delicate box, the long table-

Then the sound came to an abrupt halt.

Felix waved his wand and let the eerie white longsword dissipate.

"Understanding the essence, reshaping the form, this is the sixth level of magic ..." his voice rang out in the office.