Harry Potter’s Book of Sin Chapter 12: First encounter with a mysterious girl

　　 "Found it!" Maca couldn't help but feel happy to find the information he wanted quickly.

　　He looked at the content of the book line by line, and read in his mind: "Fairies, magical part level: XX, the fairies hold a wand like a branch in their hands..."

　　 At noon that day, Maca couldn’t wait to open one of the books he had ordered, a potion classic called "The Book of Potions." This is an ancient book published in the 16th century. If he hadn't seen it on a list of used books in Lihen Bookstore, he would have missed it.

　　 In this potion book, Maca saw a very interesting material-fairy wings.

　　 This is a very rare potion material. Although fairies do not die because they lose their wings, they are never willing to let people take their wings away.

　　"...Fairy wings have unique magical properties. They can make the fairy dazzling when it needs to be shown off, and it can also hide the whereabouts of the fairy when it needs to be hidden."

　　 "If this kind of wings can be used as the main material for blending, maybe a very special stealth potion can be formulated." Maca couldn't help but guess.

　　How to make a person invisible is a very attractive question. Except for the invisibility cloak with complex craftsmanship and the phantasmagoria with high difficulty, only a few potions can achieve the effect of allowing an adult wizard to hide his figure relatively perfectly. And these magic potions, without exception, are very expensive-some of their ingredients are quite hard to find.

　　 This gave Maca the idea of ​​"Why not research a new invisibility potion by myself", which seems a bit unrealistic.

　　 Although Maca knew that he might not be sure, he saw this as an opportunity to challenge himself.

　　Opportunities are created by yourself—Maca always thinks so.

　　 "Excuse me, do you know where the books on'how to cultivate valerian' are placed." Just as Maca was about to put the book in his hand back on the shelf, he suddenly heard a slight voice coming from behind. Voice.

　　Because the voice is too soft, Maca can't help but have the illusion of "maybe I heard it wrong". In order to confirm this idea, he went back to confirm it.

　　 "Uh, what did you just say?"

　　 Behind Maca, a girl who was tightly covered in a wide Slytherin robe stood quietly in front of her. On her head, she also wore a wide-brimmed pointed hat, which covered more than half of her face, and Maca could only see a pair of pink lips.

　　 "Excuse me, do you know where the book on'How to Cultivate Valerian' is placed?"

　　 The petite girl repeated what she had just said verbatim, and her unchanging tone reminded Maca of Professor Bins who taught the history of magic.

　　 "Uh, um, the herbal medicine books should be over there." Maca subconsciously pointed to the bookshelf area on the opposite side not far from here.

As soon as 　　's words fell, the mysterious girl in Slytherin immediately turned around and walked over there, without leaving a word of "thank you".

　　 "What's the situation?" Maca stared blankly at the girl's back, feeling like being ignored.

　　 It seems that in the eyes of the girl, Maca is just like a tree on the side of the road, which does not need to be noticed.

　　 He tilted his head and thought for a moment, at least in his memory, he did not find the existence of this mysterious Slytherin girl.

　　 "Well, forget it, I'll know if I have a chance to ask, it looks like this should be a freshman, right?" Maca shook his head, and then walked to the potions library.

　　 Maybe he will come to the library frequently in the future. He found that the amount of books here is really amazing. If you search carefully, you will definitely get a lot of gains.

　　 In the next few days, except for Maca who walked through the classrooms of various subjects step by step with other students, he spent most of the rest time in the library on the fifth floor.

　　 Most of the time, students who come to the library can see such a scene——

　　 Near the long reading table near the potions and herbalism bookshelves, there is a place that is always overwhelmed by a large number of books. Those books are large or small, thin or thick, but most of them are theoretical books that are only borrowed by senior grades and even teachers.

　　 And Mrs. Pins, the librarian, usually stares at this position not far away, as if the person sitting there is trying to assault her child, with sharp and angry eyes.

　　 If you want to figure out who is sitting there, you have to go back to see clearly, because the front is completely blocked by the book.

　　 Inadvertently, Maca has become a topical figure among Hogwarts students.

　　 This is not only because of his eye-catching behavior in the library, but also because he is the only non-Slytherin student who can say a few words to Snape and is not ridiculed. .

　　 Regarding this point, even the Master Master who has an excellent grade in the potions class can't do it.

　　 "It's just because Hermione is a Gryffindor." When Ernie told Maca about the rumor, Maca shook his head and replied.

　　As a student, Miss Granger is undoubtedly quite outstanding, and Maca also has to affirm the tremendous effort she has put into it. But again, he doesn't think that this kind of non-stop learning method is a suitable choice, especially when you are a wizard.

　　 During this period, the more he studied, the more he was sure of this—magic knowledge was too broad and profound. In-depth research on the subject of potions alone may consume his entire life.

　　……

　　 When a person is immersed in something, time passes very quickly. Before I knew it, a week passed in a hurry.

　　 During this time, Maca did not meet the mysterious Slytherin girl again, but his understanding of potions has been advancing all the way.

　　 Regarding the potions books he ordered, Maca has already fully grasped, and he has made many major breakthroughs regarding the "new invisibility potions".

　　 Regarding the study of "how fairy wings achieve the effect of hiding", Maca has come to a conclusion. This is a new type of "optical invisibility" that is different from invisibility cloaks and phantom spells, and a new type of "environmental invisibility" with several ancient potion formulas-"perception blocking invisibility".

　　 This is undoubtedly a very effective means of invisibility. Although you have not changed objectively, others cannot "feel" your existence.

　　 "But this thing is so expensive!" Maca lay weakly on the table and sighed heavily.

　　 In his calculations, he found that if a wizard is to completely conceal his existence, the amount of wings in the formula must reach a very high value.

　　"One portion of'Fairy's Wings' is 8 gallons, and three servings is 24 gallons; plus other ingredients and catalysts, the cost of a bottle of finished product will be 43 gallons..." , Maca sighed again, "It's a robbery!"

　　 "...Wait! Why do I have to worry about this!" Suddenly, Maca suddenly stood up as if he had discovered a new world.

　　 "No noise in the library!" Mrs. Pins yelled hysterically.

　　 "...She doesn't care if she is noisy or not." Not far away, a few Ravenclaw girls were whispering.

　　Maca apologized to Mrs. Pins with embarrassment, and then sat back in the stack of books.

　　 There is no doubt, what does a new potion with practical effects mean? This means wealth!

　　 Compared to the rarity and expensiveness of the few invisibility potions currently available, Maca’s potion is already cheap enough. In the entire magical world, the price of rare potions has always remained high. Potions masters like Snape who have created and improved several precious potion formulas with remarkable effects are even more sought-after.

　　 If it wasn't for Snape who involved too many stories, so if it wasn't here~IndoMTL.com~I might have served as an exclusive consultant in a potion maker or a nobleman's home.

　　What do you have if you don’t have money? Since ancient times, which potion master is really short of money? As long as the sales channels are carefully selected, it is more than enough for Jin Jialong not to mention that he is coming, but to support him to continue his research. Speaking of trading, this is what Maca is best at.

　　 Early the next morning, he asked Marfa to send him a shopping list, and he wanted to start trying to make this potion immediately. Before this, there are several problems that will be encountered in actual preparation, which must be solved first.

　　"Tuk Tuk Tuk"

　　 During the lunch break, Maca knocked for the first time. Almost no one would actively knock on the door of Professor Snape's potions class professor's office.

　　 "Who?" The tone is still that gloomy and indifferent, making visitors feel that they are not welcomed by the host here.

　　 "Professor Snape, it's me, Maca McLean."

　　 "...come in." The voice inside paused before answering.

　　Maca turned the doorknob to open this gloomy dark room, and then walked in quickly.

　　 "Professor Snape, I have a few questions about potions. I hope I didn't interrupt you." Maca said carefully, making himself as polite as possible.

　　 Snape glanced at him blankly, then said with a hint of impatience: "Ask."

　　"In fact, I encountered a few questions during the study of potions books. For example, regarding Hirst’s second law, how to deal with the maniac reaction that occurs in the actual preparation process The original liquid medicine continues to maintain a stable magical form?" Maca nodded, and then quickly asked the question.

　　 "Humph." Snape frowned and snorted coldly.