After reading the materials, Felix bid farewell and Left.

On his way back, he stopped by Diagon Alley and picked up two sets of ancient magical textbooks for Year 3 to Year 7 from Flourish and Blotts bookstore. One set is brand new and the other is a 'gem' that he has spent a lot of time picking out from the pile of old books.

The old textbooks came from a group of students with different handwriting but with uniformly detailed notes, and he thought he could use them as a reference book for his study.

The next day, he embarked on an intense course preparation exercise, starting by looking through the textbook - which was surprisingly easy!

Professor Babbling, as an expert in ancient Magic texts, picked materials that were distinctive: they were mainly based on the current mainstream viewpoint, but with a certain percentage of practical Magic texts thrown in.

The current mainstream view is that ancient magic texts are ancient scripts, used by ancient wizards to record magic, and modern researchers are tasked with translating what is still left of those texts.

This is only part of the truth, but in fact, despite the name 'Ancient Magical Script', it has a very long history - in the distant past, it was used to carry the mystical markings of wizards' magic, and was widely used in both ancient magic and ancient alchemy. It was used across the world in various forms as part of their work.

And it was the ancient magical texts that Felix sought out in order to find the ultimate way of truth.

He then went through the notes of a few of the students, and the sections on key points, their thinking, and problems solving were very inspiring to him - it helped him to understand how the young wizards viewed the subject.

That's why he likes the academic bully - after all, things fit together.

With the notes from the schoolmaster and the syllabus he had received from Professor McGonagall, he already has a clear vision of what he needs to teach.

The next step is to consider the style of teaching.

Although he already got the teaching job he had been waiting for, and the thousand-year-old Hogwarts collection was once again at his disposal, still, he was a legendary graduate, and he couldn't return to his alma mater to be criticised for his poor teaching, could he?

He couldn't afford to be embarrassed by this! He doesn't want to be accused of being a bad teacher.

"What should I do to attract their interest?" Felix thought about it over and over again, and the first idea that popped into his mind was the Battle of the Sea of Questions.

At this point, he knew that he was not alone in this quest! In his past and present lives, the psychological shadow of many test cases was haunting him.

A strange "Jie Jie" laugh came from within the room.

Back to the subject, Felix took out a piece of parchment and wrote the words " Battle of the Sea of Questions" on it, which immediately led into two branches, one being the pros, with the words " quick consolidation of knowledge", and the other branch representing the cons, with the words "easily triggered mistakes".

Felix, of course, needs to make a name for himself, but he also knows the standard of the little wizards out there - and he needs to take it easy if he doesn't want to overtake Professor Binns as the "most unpopular professor".

"The key is to be interesting and informative, but interesting is the opposite to the battle of the sea of questions ..." Felix murmured, "Maybe we can start by writing diaries and mini-essays in ancient Magic texts."

Time passes quickly amidst thought ...

"Final exams are also very important, so I might consider adding a practical section."

Ancient magical writing is inherently boring, but it is actually essential knowledge for delving into the mysteries of magic, linked at one end to ancient magic and at the other to ancient alchemy.

The former represents great power and the latter represents the once glorious creation of wonder.

"Ancient magic is not desirable, I can't even manage it myself now. But using what I've already done to create, or at least repair, a piece of alchemy is a feasible idea. ..." Felix went into some sort of 'brainstorm', thoughts and inspirations bursting forth, the quill on his desk moving rapidly. As the quill on the table fluttered and twirled, it created a trail of shadows.

By late afternoon, Felix had completed the initial design of the course.

"Not bad from me." He looked at his work with satisfaction: three sheets of parchment densely covered with text and flow charts.

The only question left was what kind of artefacts to use as the teaching aid.

This proved to be a difficult task, as Felix did not intend to prepare five artefacts for grades from three to seven - it would have been too much trouble and taken up his reading time.

Instead, he was going to choose an appropriate number of products and divide them into different difficulty levels.

For example, in Year 3, you will only have to complete a few things such as linking, looping, balancing, and coordinating, similar to the physics experiment of connecting wires and switching on and off switchboards.

As for Year 7, I'm not asking them to build a rocket, but it's not that hard for them to build a cart, right?

"What should be the object? First of all, it can't be too simple, otherwise, it's impossible to distinguish the difficulty; but it can't be too complicated either, otherwise, I'd be exhausted as well."

There should be 800, if not a thousand, young wizards at Hogwarts, and even if only a third of them chose ancient Magic texts, it would be an unbearable amount of work for him, who wanted to be "innovative in his teaching".

Felix had a headache trying to strike a balance between "efficiency" and "quality" ...

For three days in a row, Felix searched his book collection, but could not find the right starting point.

"There are so few ancient Magic books on the market, and even fewer with a practical focus!" Felix wailed in his heart, which made him long for the Hogwarts collection more and more.

It would be his OnePiece!

Felix had heard all sorts of strange legends when he was at school, such as the four founding heads of Hogwarts each leaving behind mysterious treasures, but it occurred to him that if he could master all the magical knowledge in the library, he would be no less accomplished than any of the Big Four.

The greatest treasure was right in front of them, and yet most people were blind to it!

It was only after he had missed it that he realised what he wanted - why else would he have been planning to return to Hogwarts for years? Why else would he have been plotting in the past few years to be allowed back to Hogwarts?

With nothing to find, Felix walked out of his house and prepared to take a walk.

"Mr. Hap, I haven't seen you for a few days!" An elegant lady met him by chance.

"Linda, I've been busy preparing for the new job."

"You've found a job already?"

...

After a short conversation, the lady left with a slight reluctance.

It must be mentioned that Felix's gentle personality and attractive looks have always made him popular with his neighbours.

The streets of London's Western Quarter.

Felix wandered around aimlessly, looking like a world apart from the busy pedestrians on the road.

Though that's not a bad way to phrase it.

In the middle of his walk, Felix passed by a dental clinic and, looking at the clean and tidy front of the dentist's place, his eyes paused and a thought that had been on his mind for a long time resurfaced.

No hurry, let's come back in a few days.

As he walked on, he finally stopped in front of a children's activity room and, hearing the familiar words "yo fakkin' da" and "dog sene", Felix walked in by accident.

Inside, the light is slightly dim, and a half-dozen teenagers are frantically tapping buttons, tirelessly shaking joysticks, and mouthing bizarre words like " ha-ha-ha".

Fighting games, huh?

Felix feels like he has been returned to his childhood, not this one, but his past one, of course. The familiar characters on the screen made him feel close to them, especially the poorly costumed girls.

"Fireman's skill is so cool!!!"

"Ice Girl's move is FULL SCREEN, what do you know!"

Felix laughed in silence.

I was about to turn around and leave when a flash of inspiration hit him... Wait, what was that?

Fighting?

A fighter? Yes, hand-to-hand!

Felix's eyes lit up, he had finally found something that was complex enough for five grades, but not too difficult. Wasn't that a gadget? No, wasn't that a magic golem?

He had been thinking about it all along, and he could finally put an end to it.

A recreation of some of the characters from the fighting games, using ancient magic text circuits as a template!

This kind of magical puppet ( handmade ) is acceptable for children in the wizarding world, and there is no psychological barrier for the little muggle wizard.

As for the difficulty level, it is easily adjustable. For third and fourth-year students, he can make the complete magic golem, leaving some nodes and branching structures for them to complete.

For the senior students, they need to complete at least one functional structure by themselves.

The more Felix thought about it, the more excited he became... he could even start a battle of the knights!

After all, children in the wizarding world are so miserable and the entertainment is so uninteresting, what is so great about Quidditch?

He couldn't stand Quidditch, and it wasn't because he had failed his first class in flying!

A image came to Felix's mind.

Two students facing each other, each holding a palm-sized magical golem in their hands, in a classic dueling pose.

Let's have a tense and exciting magical duel!

The corners of Felix's mouth rose in anticipation.