Soon, as William surveyed the taxidermy of the unknown liquid along the walls of the classroom, a middle-aged wizard in a black robe walked briskly in.

The wizard has greasy black hair that looks like it hasn't been washed in a long time. A large exaggerated hooked nose makes the person look a little scathing. Beneath the sallow skin are a pair of black cold eyes, indifferent and hollow, like two pitch-black tunnels.

William knew that this was a side effect of maintaining Occlumency.

Occlumency is a very advanced form of sorcery that hides thoughts from the mind as a way to counter the invasion and influence of magic.

It's like building a spiritual barrier in your mind to isolate yourself from the prying eyes of the outside world.

But Professor Snape, it seems that the occlusion technique he uses is somewhat different from the usual ones. After all, Snape is a man who can go undercover next to the mysterious man, and even the mysterious man and Dumbledore can't directly peek into his thoughts.

He must have suppressed his emotions. William gave his own judgment. The absence of emotion will allow some thoughts to be well hidden.

That's why he has such a pair of cold, empty eyes because of the lack of emotion.

Professor Snape was a little emaciated, but when he entered the classroom, the low air pressure made the chattering classroom silent, as if a pair of large, invisible hands were holding the throats of the young wizards.

He pulled out a roster and began to roll call, and as he reached William, he looked up and briefly met William's eyes.

William smiled politely, but the professor didn't respond.

"You're here to learn the exact science and rigors of this potion brew." Professor Snape spoke, his voice not high, but loud enough to reach every student in the silence of the classroom.

"Since there is no stupid waving of a wand here, many of you will not believe that it is magic,

But I never thought that nerds who only know how to read to death and little badgers who are uncreative and only know how to work hard can truly understand the beauty of the white smoke and fragrance wafting from the simmering cauldron.

You just need to remember one thing, use your barren troll-like brains to remember every word I say. Then just do it. ”

"Friedrich," he asked suddenly, "what is the difference between scaphoid aconitum and lupus venom aconitum?" ”

Instead of asking your dear savior Potter, what am I doing? William stood up with a bewildered expression.

"Except for the different names, there is no difference, they are the same plant." However, this simple question obviously could not stump William, and after a little recollection, he replied.

"Hmph, what do I get if I put moonstone powder in the Sneeze Root Essence?" Sure enough, the next question rose dramatically.

"Tempering feathers, a potion used to calm people. As far as I know, this seems like a potion that only seniors learn, Professor Snape. ”

"If I asked you to find Bai Xian, where would you go to find it?" Snape didn't pay attention to William's words, and continued to ask.

"To the pharmacy in Diagon Alley?" William teased with a hint of a smile.

"Shut up! White fresh is a plant with a strong healing effect, and the main production area is Crete Islands in Greece. Why don't you write down what you just said? Snape yelled at the young wizards in the classroom.

The classroom was filled with the rustle of searching for a quill and writing on parchment.

"Fame still says something, Friedrich. I don't know if you can always have this kind of cleverness. ”

With that, Snape stopped looking at William, and turned back to the pulpit to explain the potion that the young wizards needed for the day, a simple potion for scabies.

Soon, he divided the students into groups and asked them to start making their own potions.

Professor Snape dragged his plummeting black cloak around the classroom. With the exception of William's group, almost all of the students were subjected to the vicious sarcasm of criticism.

"Idiot, who told you to add porcupine thorns without putting the pot off the fire, your brain? Did you flush into the sewer along with yesterday's dinner? Because of your stupidity, Hufflepuff deducts five points. ”

Snape squirted venom at a little Hufflepuff badger, and the poor little boy looked like he was about to cry.

"You answered so perfectly just now, didn't he give you extra points? And why did he target you so much?

It seems that the rumor is true, he never gives extra points to other houses, and you listen to his vicious words, no wonder they all call him Old Bat. Terry, who was in a group with William next to him, whispered to William.

"Look at what he's wearing, and that hair that hasn't been washed for I don't know how many years, what do you mean by this expression, what are you doing at me?"

Merlin is on top, did the Sorting Hat classify you into the wrong house? Are you sure you're not an undercover Gryffindor infiltrated into Ravenclaw? William thought helplessly.

Suddenly, as if the boy had finally thought of something, he turned his head tremblingly to see a pair of ruthless, empty eyes staring at him coldly.

"Do you have any better advice for my dress and hairstyle? Mr. Bout? A cold serpent-like voice rang out from Snape's mouth.

"No, no, S, Professor Snape." The boy's face turned pale, his body trembled slightly, and he replied with a hint of trembling.

"Ravenclaw deducted twenty points for criticizing the professor behind his back. As for you, Mr. Bout, three weeks of confinement awaits you, and trust me, it will give you an experience of a lifetime. ”

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"Merlin is on top! Bout, what the hell did you do? No matter how crazy Snape is, he can't deduct twenty points for a lesson! At lunchtime, Sister Penelope asked with a shocked look when she saw the sudden decrease in sapphires in the auditorium.

"Oh he, teasing Snape's hair and clothes. As a result, when he turned around, he found that the main owner was behind him. William's face was full of helplessness.

"Come on, we all know he doesn't have good taste, but could you please show some Ravenclaw wisdom? Say what you want to say back to the lounge! Penelope looked at Bout with a frenzied expression.

"Don't have a next time, and, accept the punishment honestly. If you don't want to be thoroughly remembered by Snape, you'd better listen to me. Also, you'd better find a way to add back the points you deducted to me. ”

The senior sister left in a huff, and she didn't even eat much for lunch, which is no wonder, after all, twenty points is almost the score that a group of senior students can save after answering questions diligently for several days.

With so many deductions at once, any Ravenclaw who is hungry for the Academy Cup will want to strangle Terry.

"William, help me, that's twenty points, twenty points, what should I do to earn twenty points." Terry looked at William with a look of lovelessness.

"After all, you're also upset for me, we're okay together, it's just twenty points, just answer a few more questions. Let's start with the afternoon class, by the way, what is the afternoon class? ”

"History of Magic."

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"Then I guess, let's start adding points tomorrow."