Qi Mu, who did not know what to say after Dumbledore's speech, decided to remind him of his "danger".

"A controller to prevent the runaway?"

Qi Mu nodded and said that something almost went wrong not long ago.

After following Professor Mcgonagall into the hall of the Hogwarts, they encountered the "Naughty Ghost".

Although Qi Mu heard the idea of "removing the hair clip from the ghost's head", he was not too wary of the "ghost" that Harry said did not have a physical body and could not cast spells. Also, he was admiring the magical ceiling, and the ghost almost succeeded. Fortunately, Professor Mcgonagall stopped it in time.

"I think, maybe I can do something," Dumbledore said after thinking for a moment.

He thought that Qi Mu was immune to many spells, but the items on his body were obviously not.

The old principal even continued to infer that although Qi Mu's superpower could ignore the effects of spells, it could also play a role in resistance if the target of the spell was targeted. For example, the soundproof spell from before was actually an extension and confusion of the external space, or the brain seal spell …

[… As long as you're happy.]? _?

Qi Mu listened to the Heavenly Book.

Dumbledore obviously realized that something was wrong. He coughed softly and picked up the wand.

“May

I？”

Qi Mu nodded. Then, he felt as if a breeze had brushed past the two "hairpins".

"It's just a small trick. Its effect is that it cannot be damaged and no one other than you can touch it," the old principal explained.

"I'm releasing a permanent spell. It won't be ineffective without the removal of the spell.

I just don't know if it will still work in your world. "

Qi Mu tried the "Detonate and Transpose" on the right. Even if it was damaged, it could be repaired in time. Then, he found that Dumbledore's spell was indeed effective!

The teenager's eyes lit up. [Even if it's only here.]

But it would be even better if he could bring this effect back!

While the two were talking, the door of the principal's office was knocked again.

A dark figure walked in.

— — —

"The Ministry of Magic is really shameless."

Ron put down the 'Daily Prophet' in his hand. It reported the results of the trial of Black's case and proclaimed the 'great sacrifice and outstanding contribution' made by the Ministry of Magic officials' under the wise leadership of Minister Forgy 'when' arresting the vicious Peter Pettigrew '.

A week had passed since the conversation in the principal's office.

Forgy did as he said and quickly arranged for a retrial.

Harry, accompanied by Dumbledore, went to the Ministry of Magic to observe. When he came back, he was a little unhappy.

"His godfather!" Sirius yelled at Peter in the courtroom and didn't even look at him. This made Harry, who was already nervous, even more nervous.

Maybe he doesn't want to acknowledge me as his godson.

After that, Sirius was sent to St. Mungo for recovery treatment. Harry, who was looking forward to meeting his godfather, was inexplicably relieved.

Ron didn't notice Harry's abnormality. He opened Hermione's letter and said, "Hermione asked us to go to Diagon Alley next Wednesday. She also said that she's busy with her homework now. My God," Ron wailed. "I can't imagine what will happen when she meets Qi Mu!"

His exaggerated tone finally made Harry laugh.

Speak of the devil.

"Hey, Qi Mu, why are you back so early today?"

Since the conversation in the principal's office, Qi Mu had been leaving early and returning late every day. It was said that he had been spending all his time in the library in Hogwarts.

But this afternoon, he returned to the Burrow with a large stack of books in his arms.

At first, the Weisles thought that Qi Mu had finally lost his patience and started to move the library home. Later, they found out that it was "Gidrolockhart" — a total of six sets.

Apparently, he bought these books for the Weisles and Harry.

However, Mrs. Weisles could not accept his kindness. Where did a little wizard who lived alone get so much money?

And as a cousin, it was fine to buy books for Harry, but it was too much to buy books for them.

She shook her head and persuaded him to return the books.

It's Professor Snape's money.

?

Д????!!!

Qi Mu explained simply to the others. He used his talent to save a medicine that a potion professor urgently needed, so he made a "windfall" and had to spend it immediately.

He also said that he just bought books for them that were "worthless and had to be bought", so there was no need to be polite with him.

After the children were amazed, they felt that they admired and relieved and immediately accepted Qi Mu's "spoils of war against Old Bat". This kind of "spoils" made them feel as if they had also participated in the battle. Even the smirking wizard on the cover was much more pleasing to the eye.

Only Mrs. Molly had a different opinion about Qi Mu's description, but she did not say anything. She only thought, "This child loves to read so much. When he finishes reading, he will understand how extraordinary Mr. Lockhart is."

[I've read it. It's very interesting.] Qi Mu nodded in his heart. [He's a very good novelist.]

So, what had happened to the potion professor, who had been squeezed dry by the old fox during the holidays?

The first few days were "peaceful".

Qi Mu had been reading in the library of the Hogwarts, and Snape had been "reading with him" with a gloomy face.

Because the teenager teleported to and from the principal's office in the morning and evening, and whenever he needed something, he would summon the sprite that Dumbledore had arranged for him. He did not show his ability in front of Snape, so the Potions Master still thought that Qi Mu was a "dumb kid" who wasted his time brewing potions.

So, early in the morning, Snape came to the principal's office before Qi Mu and began to "report" to Dumbledore.

"— He's reading really fast, but I don't know if he's fanning himself —"

"— He eats sweets like rice, has no self-control, has no sense of propriety, is hopeless, has a taste disorder —"

"Ahem, Severus." Dumbledore put down the honey tea in his hand. "You don't have to add that last sentence."

Snape glanced at the old principal's teacup and said with a fake smile, "Ha, I'm sorry, Mr. Principal. I just forgot that you have the same 'little hobby.'" His expression was neither "sorry" nor "forgot."

"Since we are so like-minded, I think it's more suitable for you to be the 'guide.'"

The Potions Master said that he was very busy, and even had to go out soon, and asked Dumbledore to make other arrangements.

Although that was what he said, Snape did not really want to quit.

He was not an impatient person, and Qi Mu's behavior did not annoy him — at least the kid was not noisy.

The point was, Dumbledore would not agree to it, and the principal always had a way to make people do what he wanted.

So Snape's purpose was just to express his dissatisfaction with the "unclear job description" and see if he could get something out of the old fox.

This method was effective, because Qi Mu had arrived.

The 'mute young man' did not walk out of the fireplace as Snape had imagined. Instead, he directly appeared in the house — like a phantom, but without a sound.

Qi Mu had checked his destination before teleporting, as usual → _ ←, so he was not surprised.

He did not intend to play the "dumb young man" in front of the old principal's right-hand man.

Snape, however, was surprised and doubtful.

[Dumbledore has removed the restriction?

No, that's impossible, and it doesn't look like a phantom at all —]

He looked at Fawkes behind the door, and his eyes lingered on the gorgeous red feathers for a while. [It's not a phoenix either.]

[Has he been hiding here all this time?]

This might be the most logical guess, but Snape did not believe it, because he really did not see the need for it.

Dumbledore did not care about Snape, who was kept in the dark, and spoke directly to Qi Mu.

"Ah, you've come at the right time, Qi Mu."

"Professor Snape is about to go out, do you want to go with him?" He winked at the young man. "Experience the fun of the magic world for yourself?"

Snape came to his senses and stared at the principal. This old bee doesn't know where he is going, and he dares to promote it so carelessly?

But after looking at Dumbledore for a moment, he did not object.

Not to mention that Qi Mu had just refreshed his image — whether he was a gifted wizard or a magical humanoid creature, his strength would not be simple — it was indeed worth observing.

He only said that the place he was going to, although it was a chaotic place, with his strength, even if he brought along a dumb young man, he could still protect him.

[That damned old fox.]

Thus, Qi Mu, who was slightly curious and nodded in agreement, and Snape, who was taking advantage of the situation, left one after another in a sea of green flames.

— — —

Overturn Alley.

Snape and Qi Mu finally found their transaction partner. The three of them stood in a hidden corner, their bodies covered tightly by their cloaks.

But the item that the short wizard brought was obviously not to the Potions Master's satisfaction.

"This is the 'Black Snake Talisman' you found for me?" Snape's face was as dark as ink under the hood.

"Sigh, that took a lot of effort!"

The drug dealer opposite them did not seem to notice and continued to boast. "The Black Mamba is fierce and protective after shedding its skin. I risked my life to get it, and brought it back non-stop …"

[What's the danger of reaping the benefits without doing anything? Are you afraid of dying of joy?]

← _ ←

"I said it would take less than 24 hours to shed it!" Snape interrupted him. "What's the difference between this and a normal snake shedding?!"

The drug dealer's heart skipped a beat. [It's at most two or three hours over, how can you tell?!

You're not trying to lower the price, are you?]

Thus, he continued to argue, "Of course it's less than a day —"

"Do you think you can fool me by spraying some water on it?"

The Potions Master was disappointed and coldly said, "Fletch, if you want to play tricks, you'll have to see if you have the ability to do so!" Then, he turned and left.

The drug dealer was actually hoping for a fluke. He had dealt with Snape more than once and naturally knew how powerful he was. But this time, he was really unwilling to give up. [A total of 200 Garen!]

"That's already very rare!

You have to be old enough and complete, and there can't be any traces of Magic Spells. Not to mention, the local area strictly forbids export — "

"I guarantee that it's only ten minutes over, so I'll charge you 100 Garen!

Otherwise, 70 Garen — "

The Potions Master didn't even bother to roll his eyes. "Keep it for yourself to make cough medicine!"

He took a step forward with his long legs and in the blink of an eye, he was already a few meters away.

Qi Mu didn't follow him, but instead, he offered: [10 Garen.]

The drug dealer holding the snakeskin was stunned. Snape also stopped in his tracks and turned back.

[10 Garen, in pounds sterling.]

Qi Mu took out the paper money. He had already learned from the book 'Muggle Research' that pounds sterling could be exchanged in the magic world, but he hadn't been to 'Gringotts' yet.

Qi Mu, Little Bargainer Namio, of course knew that this was the lowest price that the other party could accept.

[It's still better than mixing it with other snakeskins and selling it by pounds.]

The drug dealer was still a little hesitant after his thoughts were exposed.

If it was someone else who offered this price, he would definitely grit his teeth and sell it. But this person who didn't say a word and sounded very young came with the Potions Master …

The drug dealer looked at Snape. [Whose idea is this?

Is there a conspiracy?]

Snape looked at Qi Mu.

Of course, business secrets couldn't be revealed in front of the drug dealer, so the teenager said in private: [I can change it back to the state you need.]

[Then it shouldn't be a problem to buy 50 Garen, right?]

The Potions Master raised his eyebrows, half-believing and half-doubting.

[This brat knows about magic potions?]

Obviously, he thought that Qi Mu was going to use other herbs to process or remedy it – this was a conventional method.

Qi Mu thought for a while, then threw the paper money at the drug dealer who was still calculating. At the same time, he summoned the wooden box containing the snakeskin into his hand.

[Time Reversal!]

The open box was facing the Potions Master. The grayish-brown snakeskin inside looked exactly the same as before, but it made Snape's pupils shrink. He looked at the teenager in shock.

[This, what did he do?!]

The drug dealer who was forced to buy and sell did not know what had happened. He looked at the pounds in his hand and hurried forward, wanting to continue pestering.

Snape reacted quickly. He closed the wooden box with a snap, raised his wand and said, "Forget it all!" Then, he pulled the pounds from the drug dealer's hand and exchanged them for a few Garen.

Finally, he picked up Qi Mu and said, "Let's go!"

The two of them left the dark alley.

— — —

In the headmaster's office of Hogwarts.

The professor of magic potions reported to the old headmaster in a few words, then left Qi Mu, who was unable to ask for payment in time, and hurriedly left with the "evidence."

_|||×2

"Controlling 'time,'" Dumbledore said after listening to Qi Mu's popular science. "This is something that magic can't do."

[There is no magic related to time at all?]

"Maybe the 'time converter' can be counted as one."

Dumbledore gave a brief introduction and then said, "Wizards are drawn into the cycle of time through it — they don't actively control time, that's all."

He pointed out that although Qi Mu's ability had many limitations and seemed less convenient than the Restoration Spell, it was essentially something that magic could not reach.

The two of them experimented. "Time Backtracking" was indeed effective in the face of magic damage that could not be repaired by spells.

But compared to the "repair" of items, Dumbledore was undoubtedly more concerned about the "healing" effect of Qi Mu's ability.

He speculated that perhaps even the completely unsolvable black magic curse was no match for it — but obviously, this was not something that could be easily verified.

So, the old headmaster just smiled and concluded, "This is really a remarkable ability. At least I guess Severus has thought of where it is needed."

Sure enough, Dumbledore was right.

Two days later, after verifying the efficacy of the "rejuvenation" Black Serpent Charm, Snape took the initiative to find Qi Mu.

"This is the Double Moon Herb."

The Potions Master placed a herb that looked like it had just been plucked not long ago in front of the young boy.

"It stands upright in clusters and bears small spherical fruits. No flowers.

It's a common magic ingredient that has a catalytic effect. "

[No flowers?]

Qi Mu stared at the moon-white corolla.

← _ ← [...

And is there really a "herb" that doesn't flower? How does it bear fruit?]

"This is a mutated one. It doesn't bear fruit. It will completely wither after a few hours of plucking," Snape continued. Did he notice Qi Mu's "Are you kidding me?"? _?

Expression?

[Well, the world of magic is magical.]

Then, it was time for the Potions Master to explain:

The Double Moon Herb itself was very common, and mutated plants with flowers were not particularly rare. Its efficacy was no different from that of a weed. The real special thing was the Double Moon Herb that "bloomed" but did not show any mutation.

Many potion manuals had such speculation: "Mutated Double Moon Herb is an extremely rare ingredient that can indiscriminately increase the quality of a potion." But it was just a guess, from the experience of wizards who added "ordinary" Double Moon Herb but obtained a super high quality potion.

It was completely impossible to distinguish before it bloomed, and once it bloomed, it would no longer be useful. This characteristic made it a legendary herb.

Snape of course did not need external help to increase the quality of his potions, but this unknown herb itself was very interesting to him.

He had previously planted a large area in the Forbidden Forest for research, but he had not made any progress.

Qi Mu's "Backtrack" ability had hit the muzzle this time, so naturally, he had to make good use of it.

[First, use this to verify the previous inference. If you want to continue the research, you will need more.]

Snape continued to plan in his mind where to collect his "vegetable field" after harvesting it.

【。。。】_

Qi Mu followed the instruction and "Backtracked" the Double Moon Herb.

Then, the next day, he saw the highly efficient Potions Master come with a big bag.

This time, Qi Mu did not do as he was told.

The teenager stretched out his right hand, bent his thumb and index finger into a circle, and straightened the other three fingers with the palm facing forward.

Very suggestive? _?

Looking at Snape.

Snape frowned: [Okay?]

Since when did this kid start to do something so superfluous?

_|||

Qi Mu put down his hand and directly said: