August 1991.

"On behalf of all the teachers and students of Hogwarts School of Witchcraft and Wizardry, I would like to welcome you to join you, Professor Ye."

In the headmaster's office of Hogwarts School of Witchcraft and Wizardry, Dumbledore and Ye Siyu hugged.

A year had passed since Dumbledore's invitation, and Ye Siyu contacted Dumbledore and informed him that he could go to Hogwarts School of Witchcraft and Wizardry to teach.

In the face of Ye Siyu's reply, Dumbledore was pleasantly surprised, after Ye Siyu promised to join Hogwarts School of Witchcraft and Wizardry, Dumbledore didn't expect Ye Siyu to need to prepare for so long, and he had been preparing for a whole year, which made him think that Ye Siyu's original promise to him was just perfunctory, but he didn't expect Ye Siyu to really join a year later.

Over the course of a year, many things have changed, the biggest of which is the percentage of power in the wizarding world.

Originally, the proportion of power in the wizarding world was 30% for pure-blood families, 20% for half-blood families, and 50% for scattered magicians.

In each generation of the pure-blood family, it is extremely rare to be unable to practice magic, and there may only be one person in a few generations, and the half-blood family is different from the scattered magicians, there may only be one magician or none in their generation, coupled with the accumulation of resources, this leads to their power not being as strong as the pure-blood family.

And with the advent of Ye Siyu's magic cultivation technique, this phenomenon has changed.

Because the magic rules of this world are different from the relationship between other worlds, the key to magic cultivation is no longer the talent valued by ordinary worlds such as magic strength and attributes, but the talent valued in this world is willpower and imagination, and magic power and the like are secondary.

The meditation of the first step of magic cultivation is not to condense spiritual power and then absorb energy to condense magic power in the ordinary world, but to imagine yourself as a magician and let the world recognize your identity as a magician.

As long as he is recognized by the world as a magician in the sense of the word, even if he doesn't have any magic before that and is not completely unable to cultivate a magical physique like Kudo Shinichi, magic will be automatically born, making it fit the identity of a magician.

These magic powers may not be comparable to pure-blood families in the beginning, but they also provide a starting point for ordinary people.

The main reason why the scattered magicians and the half-blood family are weaker than the pure-blood family is that their descendants rarely give birth to children born with magical talents, and Ye Siyu's magic cultivation technique perfectly makes up for this shortcoming, so that those ordinary people who are weak in their own magic and are almost ordinary people or have no magic can cultivate magic power, so as to break the bloodline imprisonment of the pure-blood family.

At the same time, the proportion of scattered mages and half-blood families is rapidly expanding, and the proportion of pure-blood families is decreasing.

This is still because Ye Siyu did not promote magic cultivation for free, but exchanged it for a fee, otherwise the proportion of pure-blood families would definitely be much less than now.

The pure-blood family was angry about this situation, and they longed for Ye Siyu to die.

However, they knew that they had no chance, and they didn't dare to use the Ministry of Magic to deal with Ye Siyu like they did at the beginning.

Except for the ordinary pure-blood families like Weasley, the rest of the pure-blood families are arrogant towards the half-blood family and the scattered magicians, which has caused many people to be dissatisfied, but before the pure-blood families were too powerful, ordinary people dared to be angry and dare not speak, but now it is different, the half-blood families and the scattered magicians are getting more and more powerful, and they are not as afraid of the pure-blood families as before.

Ye Siyu's reputation is also bigger than a year ago, I don't know how much, it is not an exaggeration to describe it as known to women and children, as long as it is a person in the magic world, there is no one who has not heard of Ye Siyu's name, many scattered magicians and magicians of mixed-race families regard Ye Siyu as their idols and call them saints in the magic world.

If Ye Siyu is willing to hold high the banner now, there will definitely be many scattered magicians and mixed-blood families who will join Ye Siyu to establish a new order in the magic world, so the pure-blood family will not dare to provoke Ye Siyu at all, lest Ye Siyu destroy himself.

It can be said that as Ye Siyu's fame became more and more popular, Dumbledore did not have much hope that Ye Siyu would go to Hogwarts School of Witchcraft and Wizardry to teach, but what he never expected was that Ye Siyu finally joined.

"It's an honor to join Hogwarts School of Witchcraft and Wizardry." , Ye Siyu, who hugged Dumbledore, smiled.

Dumbledore smiled, although at his level of strength and status, he was immune to compliments or anything, but now the people who complimented him were saints who changed the wizarding world, which was still very useful to him, and it was an honor.

"Professor Ye, let me take you on a tour of Hogwarts School of Witchcraft and Wizardry." After greetings, Dumbledore led Ye Siyu to visit Hogwarts School of Witchcraft and Wizardry and introduced various allusions and taboos one by one.

Although Ye Siyu is very familiar with these allusions and taboos, he still listens patiently to them again.

As they spoke, they also came to the last location, the location of the Hogwarts School of Witchcraft and Wizardry's treasury.

This place is none other than Dumbledore's office, and apparently Dumbledore is going to pay Ye Siyu in advance for the next semester.

Ye Siyu had looked for the entrance to the treasure house in his previous rebirth, but he couldn't find it for a long time, and finally had to give up.

Because the treasure house is not a fixed place, but is located in a different space, its location is not static, it can be changed with Dumbledore's manipulation, and the reason why it appears in the principal's office now is to facilitate Ye Siyu to get paid.

"Open the sesame door." , Dumbledore uttered a spell that Ye Siyu didn't expect, and the walls of the office parted to form an arch, and a strong energy fluctuation emanated from the arch.

This made Ye Siyu's eyes light up, although he didn't go in to check it, but these energy fluctuations alone proved how precious the things inside were.

"Please." , Dumbledore stretched out his hand to invite, and then took Ye Siyu into the treasure house.

This is a small treasure house, about two hundred square meters, and there are one shelf after another erected in it, and the shelves are all neatly arranged and exuding strange colors of magic props.

At a cursory glance, you can see that every magic item here is not lower than the stellar level of the prop.

"Professor Ye, as we promised, you can get a magic item from it." , Dumbledore said.

"Headmaster, I think I can make it to the end of my life." , Looking at the magic props in front of him, Ye Siyu joked.

Even without a magician and a deathly height, the magic props in this treasure trove alone were enough to make Ye Siyu's world origin reach a hundred percent level.

If it weren't for the fact that his current strength was not enough to deal with Dumbledore, and there must be powerful defensive magic in this treasure house, Ye Siyu would be eager to directly snatch the entire treasure house.

"Professor Ye, then I will thank you for your teaching on behalf of Hogwarts and future students." , Dumbledore also joked that he also knew how precious the Hogwarts Treasury was.

After chatting a few words, Ye Siyu began to choose magic props as a reward.

As for which magic props to choose, Ye Siyu didn't need the other party's effect to be so powerful or magical, he only needed a high level to provide him with a large amount of world origin, so Ye Siyu directly crossed the shelf with low-level magic props and went to the last shelf.

Suddenly, he saw something familiar, it was a very long and fine gold chain with a small hourglass on the pendant, exuding the aura of the main god.

"Headmaster, I want this." , Ye Siyu pointed to the gold chain and said.

Seeing Ye Siyu's choice, Dumbledore was stunned, he didn't expect Ye Siyu to choose this kind of thing, and at the same time, he regretted a little why he didn't check it.

This gold chain is nothing else, it is the most magical magic item in the wizarding world, a time turner that allows the user to turn back time.

No one in the wizarding world knows who made these items, or when they appeared, and they were magical items that existed before Merlin's time.

This time turner was requested by Dumbledore from the Ministry of Magic for the new semester, especially for the best students of the new semester.

"Isn't this okay? I can pick and choose something else. Seeing Dumbledore's hesitation, Ye Siyu asked.

"No, it's our agreement." , Dumbledore replied after a deep sigh.

Although he didn't really want to give the time converter, the top item in the wizarding world, to others rashly, but as he said, this was their agreement, and now the first payment was not according to the agreement, it was really untrustworthy.

He also knew Ye Siyu's personality, and knew that the other party was not a wicked person, and it was unlikely that handing over the time turner to the other party would have any huge impact.

Of course, to give back, the reminder that should be said still has to be said, "Professor Ye, this is a time turner, every time the hourglass turns, you can rewind time by one hour, according to the regulations, it can only be used for those excellent students to study, if you want to get it, I hope you don't use it for unnecessary things, because casually using the time turner may be cursed, serious and even death." ”

Under normal circumstances, Dumbledore would sign a magic contract with the owner of the time turner to make the other party abide by the rules, but now the person who got the time turner is Ye Siyu, and Dumbledore believes in Ye Siyu's person, so he doesn't sign any contract, just tell him.

After speaking, Dumbledore handed the time turner to Ye Siyu.

"Thank you for your trust, I won't use him to do anything that hurts our relationship." , Ye Siyu took over the time turner, he knew very well what Dumbledore meant, that is, he didn't want him to use the time turner to do bad things.

Ye Siyu didn't have any problem with Dumbledore's request, not that he didn't want to use the time turner to do bad things, but that he couldn't do it.

In the previous rebirth, Ye Siyu had obtained this time turner from Hermione's hand, and was also ready to use it to steal some magic items.

However, what he didn't expect was that the moment he used the time turner, he was immediately discovered by the will of the world and was blasted into scum.

But then I think about it, it's right, time props, no matter what world they are in, are top props, and if you are not careful, you will cause the timeline to change or create a new parallel world, and a single world like Harry Potter that does not exist in parallel worlds, every timeline change will cause the entire world to change.

If it's a small thing, the will of the world won't care too much, but if it's something that affects the general trend, it will definitely attract attention.

And Ye Siyu, an outsider who does not belong to this world, no matter what it is, it will not be a trivial matter, and it is strange if he does not die.

Therefore, this time turner has no effect on Ye Siyu except for providing him with the origin of the world.

Of course, Ye Siyu doesn't care about this, as long as he leaves this world, this is also a time prop at the main god level, even if he can't kill time in other worlds, it can also provide Ye Siyu with a reference for time, making him more familiar with the law of time.

Hearing Ye Siyu's answer, Dumbledore nodded, and then took Ye Siyu out of the treasure house, and then let Ye Siyu familiarize himself with the school.

……

In September, Hogwarts School of Witchcraft and Wizardry opened.

During the night, the new and old students who had arrived on the Hogwarts Express had all gathered in the Great Hall.

"You said we could see Mr. Ye later."

"Of course, all the professors will be there at the beginning of the school year."

"My God, I think it's a dream, it's great that Mr. Ye actually came to teach at Hogwarts."

"Which subject do you think Mr. Ye will teach, will it be his unique magic cultivation technique?"

"It would be great if it was true, my big brother in the house next door learned, and went from a magic that only succeeded once out of ten times to succeed every time."

"But I've heard that magic cultivation requires precious magic items to learn, can we really learn it?"

In the auditorium, both new and old students were discussing Ye Siyu's related matters.

During Dumbledore's visit to the school, he met many students who stayed at the school.

These students who stayed in school recognized Ye Siyu at a glance, and they all stepped forward to ask for autographs, Ye Siyu did not refuse, gave each of them a magic signature, made them jump with excitement, and informed the rest of the students who stayed in school and wrote to those friends who came home from vacation.

The news of Ye Siyu's visit to Hogwarts School of Witchcraft and Wizardry to teach instantly went viral throughout the wizarding world, and it also made the students who needed to enter Hogwarts School of Witchcraft and Wizardry excited, and they all speculated about what lessons Ye Siyu would teach.

"Who is Mr. Ye they are talking about?" In front of the auditorium, Harry, who was wearing round-rimmed glasses, looked at Hermione next to him with a puzzled look on his face and asked.