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

Snape was furious.

"Lin Yu, what exactly are you doing?"

Snape roared and charged at Lin Yu. His face was ashen as he stared at Lin Yu and the alchemy furnace that had appeared out of nowhere. Damn it, what the hell is this thing?

Lin Yu sighed silently.

So, they still couldn't get things done before Snape returned?

What a pity. If I had given him another ten minutes, the batch of Marrow Cleansing Pills would have been ready. Then, all we would have to do was wait for Snape to come in, and the mission would have been completed.

As for Snape's shouting, Lin Yu didn't take it to heart at all.

Because he had already figured it out, before the end of this semester, or rather before Voldemort and Professor Quirrell were exposed, he actually already had a talisman.

At worst, I'll betray Voldemort to ensure my own safety.

So Lin Yu calmly said, "Professor Snape, I know you're anxious, but please don't rush. Let me explain. In my hometown, this is called alchemy. To put it simply, it has a similar effect to your potions. The only difference is that you use a pot to boil it, while we use a furnace to refine it."

That's actually not wrong.

Because in the Harry Potter universe, China also has wizards, but they are not called wizards in China; they should refer to Taoist priests.

If that's the case, then the ancient Taoist priests must have used alchemy.

Snape seemed to have realized this as well, and his expression softened slightly, but he continued to question, "So what are you going to refine?"

Lin Yu's heart skipped a beat. Was there a chance? Had Snape changed his ways?

After thinking it over, Lin Yu honestly replied, "What I want to refine is the Marrow Cleansing Pill, which can help the body cleanse its marrow and remove impurities."

This is a pill recipe from a fantasy world, and it uses medicinal herbs from the same world. Although it's a reward from the system, anything produced by the system is bound to be of the highest quality.

So Lin Yu didn't say everything. That is, after taking this Marrow Cleansing Pill, even an ordinary person will gain the aptitude for cultivating immortality.

It's no exaggeration to say that even in some major sects, this is a decent pill formula.

If that old demon Han were to find out, he would probably be willing to give up his entire fortune to obtain one before reaching the Foundation Establishment stage.

In a martial arts novel, a single Marrow Cleansing Pill would be enough to open up the Ren and Du meridians, instantly making one a master of the Innate Realm.

That's how exaggerated it is, after all, the Qi Refining stage is considered to be at the innate level in some martial arts novels.

Snape looked thoughtfully at the alchemy furnace before him, then decided not to say anything more.

This left the Slytherin students, who had originally planned to watch the spectacle, completely astonished.

They thought Snape would be furious when he returned, and would at least deduct several dozen points from Lin Yu's Gryffindor grade, if not expel him.

I really didn't expect things to develop this way.

Snape gave Lin Yu a deep look, his eyes seeming to flicker with some kind of apprehension or suspicion.

Then, Snape turned and walked toward the podium, saying, "Back to the previous topic. Narcissus root powder and mugwort can be combined to make a very potent sleeping pill, a dose of 'life-or-death water.' Bezoar is a stone taken from the stomach of a cow and has extremely strong detoxifying properties. As for aconite and wolfsbane aconite, they are the same plant, also collectively called aconite."

Everyone looked at Snape, including Harry.

They seem somewhat puzzled by Snape's change?

Snape stopped, turned around, and asked with a frown, "Why didn't you write all of this down? Did you actually memorize it all?"

The children immediately lowered their heads, and for a moment the classroom was filled with the rustling of quills and parchment.

Lin Yu remained unmoved, leaning forward to say to Hermione, "Make a copy for me too, I'm busy right now."

Snape rolled his eyes and said expressionlessly, "Gryffindor loses one point."

Feed...

"If you dare to lie to me, Lin Yu, I'll make you regret it, because I'll deduct at least five points from your score, no, ten points," Snape warned again.

Lin Yu shrugged, actually feeling relieved. He was prepared to expose Voldemort's existence, but he didn't expect to be fooled by him.

It seems that Lily's matter is indeed a pain that Snape can never get around in his life.

The only thing that could make Snape break down, and then forcibly suppress it afterward, was probably news about Lily.

Snape then seemed to have returned to normal and calm, and Potions class continued.

And as the students were taking notes, Lin Yu's batch of Marrow Cleansing Pills was finally nearing completion.

After ten minutes, Lin Yu put away the furnaces under the alchemy furnace, which had provided heat to the furnace.

Snape frowned and looked over. It was clear that although he hadn't come over, he was very concerned about Lin Yu's behavior.

Alchemy? He had heard some things about that mysterious ancient Eastern country.

Unfortunately, even Snape had never been to that country, so he was indeed curious about alchemy, which is why he didn't pursue the matter with Lin Yu.

Snape's talent in potions was so great that even Dumbledore trusted him.

After Lin Yu confirmed the situation inside the alchemy furnace using some unknown method, he did not rush to open the lid. Instead, he formed hand seals and chanted incantations.

A moment later, Lin Yu pointed at the alchemy furnace and shouted, "Open!"

The lid of the alchemy furnace clicked open automatically, and then a torrent of hot steam burst out, almost filling the entire classroom in an instant.

At the same time, a mouthwatering aroma made everyone take a deep breath, and some even couldn't help but drool.

For example, Gore and Crabbe.

Not only the two of them, but even Hermione's eyes widened, she stood up, and looked expectantly into the alchemy furnace.

Snape couldn't stand still any longer and quickly walked over.

Lin Yu reached out, completely disregarding the high temperature inside the alchemy furnace, and used spiritual energy as a guide to draw crystal-clear pellets into his hand.

"Don't use your hands," Snape sneered, and somehow a glass container appeared in his hand as he handed it over.

Lin Yu took it casually and put the Marrow Cleansing Pill inside.

There were nine Marrow Cleansing Pills in total, each about the size of a thumb, bright red in color, and as clear and translucent as a gemstone.

The enticing aroma only slowly dissipated after the glass bottle was capped, and the classroom returned to its usual tranquility.

However, all the students were irresistibly drawn to the pills, and even Snape stared intently at them.

Is this the alchemy of Eastern wizards?

This was also the first time he had seen results.

At that moment, a system notification sounded in Lin Yu's mind: "Mission complete, mission rewards distributed. Items have been sent to the system space, which the host can check at any time."

At the same time, a large number of memories suddenly flooded into Lin Yu's mind, which were related to the Encyclopedia of Pharmacology, the Encyclopedia of Pill Recipes, the insights of alchemy masters, the insights of formation masters, and the Encyclopedia of Formations.