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

Lin Yu spent some effort to temporarily suppress the vast and complex memories that the system had directly implanted into his brain.

Now is not the time for him to receive these memories.

After all, the Potions class was still ongoing.

Snape watched as Lin Yu actually succeeded in refining a batch of Marrow Cleansing Pills. After hesitating for a moment, he finally couldn't help but say, "Could I have one of your pills? Don't worry, I can trade with you. You can try asking."

Although Snape had always intended to become the Defense Against the Dark Arts professor, he was equally interested in potions.

It's like a scientist encountering something new in their field; they can't help but want to figure it out.

Lin Yu thought for a moment and then tentatively asked, "Could you give me a vial of Felix Felicis?"

Snape frowned, his tone turning stern again as he scolded, "What are you thinking? That thing is forbidden in Quidditch and exams."

Felix Felicis can bring good luck in a short period of time, and even make people feel blessed and have their wishes come true naturally.

If used in a Quidditch match, it will undoubtedly bring good luck in catching the Golden Snitch.

If it were an exam, one would naturally know all the answers.

That's why Snape said that this thing was not allowed to be used in Quidditch or in exams.

But Snape never said he wouldn't make Felix Felicis.

Lin Yu's eyes lit up immediately, and he hurriedly explained, "I won't use Felix Felicis to cheat, Professor. It's very useful, really. I can use it right in front of you."

Snape stared intently at Lin Yu.

In fact, Lin Yu's mysterious behavior had already filled Snape with confusion.

Lin Yu seems to possess some secrets, secrets that no one knows how he knows.

Although he hadn't explained things clearly, Snape already knew that Lin Yu at least knew he had once been a Death Eater.

Especially Lily's death, Snape's relationship with Lily, and even his feelings for her.

Etc., etc.

The question is, how did this child know that?

Snape thought a lot after he left; he even planned to go find Dumbledore.

Later, Snape changed his mind, and even now, after some hesitation, he finally agreed: "I can give you one dose of Felix Felicis, but you must give me two of these pills. And you are not allowed to misuse them; you cannot give them to anyone else until I've confirmed their effects. However, this does not include yourself. After all, if you're truly a fool, it's much better to be poisoned by your own medicine than to poison someone else later."

Lin Yu was speechless. Snape was still the same Snape. Couldn't he speak without being sarcastic?

Who do you think you are? This is a genuine Marrow Cleansing Pill, a real gem.

Lin Yu did give Snape two Marrow Cleansing Pills after all, but Snape didn't have Felix Felicis right now, so he promised to make one for him later.

The reason Lin Yu wanted the Felix Felicis was to receive the memories related to alchemy and formation techniques.

At the same time, one can use Felix Felicis to enhance one's understanding of martial arts techniques, such as the Devouring Heaven Divine Art and the Nine Forms of Cloud Abyss.

The technique requires a deeper understanding before one can master it more easily.

Moreover, Lin Yu always felt that the Devouring Heaven Divine Art, as a supreme Dao technique, and known as "without rules, without attributes, and capable of devouring everything," was definitely not that simple.

But now he doesn't even know what the so-called magic in this world is, or why anyone who knows a spell can cast a spell, such as the levitation spell.

Simply hold the wand, wave it, and then shake it, then recite the incantation to cast a spell.

There's even a claim that wizards don't possess magic; it's as if they have an infinite amount of mana.

This is simply unbelievable; there's absolutely no such thing as the law of conservation of energy.

He felt he still needed to grow a lot.

This includes his plan to transform the Illumination Charm into a laser beam.

Many things take time.

After Snape received two Marrow Cleansing Pills, the professor, who was secretly called the Old Bat by students from other houses, became noticeably more agreeable.

Because his expression was no longer gloomy, and his gaze was no longer cold.

However, he still made Lin Yu put away the alchemy furnace without any politeness, because the potion class was about to start.

Don't forget this is Snape's Potions class; Lin Yu shouldn't be making pills in the first place.

If Snape hadn't been curious about alchemy, it's easy to imagine he would have deducted ten points from Gryffindor's score.

As for Lin Yu seemingly performing magic to magically store the alchemy furnace into the system space, Snape and all the students were not surprised.

After all, we're all wizards, so what's so strange about knowing a little magic?

Wizards also have similar storage artifacts, such as the Traceless Stretch Spell.

After Lin Yu returned to his seat, Hermione lowered her voice and said, "You were really too bold. Luckily, Professor Snape didn't intend to pursue the matter, otherwise, just talking back to a professor in class like that could have gotten you expelled. Even if Professor McGonagall favors you, you can't be so willful."

Lin Yu knew Hermione was concerned about him, so he smiled and said, "Don't worry, I know what I'm doing."

Hermione rolled her eyes. She thought he was easy to deal with, but it turned out he was just as troublesome.

Seeing that Hermione was really angry, Lin Yu secretly took out a spirit fruit and stuffed it into Hermione's mouth when no one was paying attention.

Hermione gave a soft hum and finally stopped saying anything, silently savoring the sweet juice.

She was curious because the fruits Lin Yu gave her were all varieties she didn't recognize. She wanted to buy some herself, but after asking around, she learned that those kinds of fruits didn't exist in the entire Hogwarts.

Could it have been brought out from the Forbidden Forest? Did he even go to the Forbidden Forest?

After all, the Weasley twins had invited Lin Yu to go on an adventure with them more than once.

Hermione was lost in thought, while Lin Yu listened attentively to the lesson, and Potions class finally returned to normal.

Perhaps Snape really did change his nature, because during that time he taught his students a potion, albeit a simple one, that could cure scabies.

However, Snape calmly explained the required materials and the order in which they needed to be placed.

Even when Neville accidentally put the porcupine quills directly into the boiling cauldron, turning it into a crooked mess, the medicine inside spilled all over the floor, corroding Neville and Seamus's shoes like sulfuric acid.

Snape simply cursed "two idiots" and then had Neville taken to the infirmary.

He didn't take the opportunity to deduct points from Gryffindor's grades, nor did he hold a grudge against Harry and try to teach him a lesson.

In fact, Snape always liked to cause trouble for Harry.

Finally, the agonizing hour and a half of class was over.

Even Lin Yu breathed a huge sigh of relief.