Exchange student at Hogwarts

"The Chamber of Secrets is open. Who is the heir of Slytherin?" In the boys' dormitory, Zhang Chen, Ron, and Hermione gathered in a circle and discussed seriously, while Neville participated for a while and discovered this brain-using game. It was not a subject that he was good at, so he ran to the side to practice exercise. His progress in Eastern exercises was now the first among the three, which made him very excited. He never thought that one day he would A certain ability will surpass star classmates like Harry Potter.

"I think it should be Malfoy." Ron chose the wrong answer without any surprise, and he said it with reason. "You heard what he said: You are next, Mudblood. In fact, you just need to look at his ugly face." With his rat face, you knew it was him.”

"Malfoy" Hermione's face was filled with suspicion.

"Look at their family. Their whole family is in Slytherin. He often shows off this to others. They are probably descendants of Slytherin. His father is evil enough. They may have the key to the Chamber of Secrets. "It's been passed down for centuries," Ron said, "passed down from generation to generation, from father to son."

"Maybe" Hermione replied hesitantly.

"How do we prove it?" Zhang Chen thought for a while, and did not tell them the correct answer directly, but followed their thoughts, because he really wanted to study the compound soup potion, which can transform into someone else's. The form of potion should also be of some reference to my practice of Xuan Gong.

"Maybe there's a way," Hermione said slowly. "Of course, it's not easy, and it's dangerous, very dangerous. We'd probably break fifty school rules."

"Stop being so pretentious, tell me how to do it." Ron was a little impatient.

"All we need to do is go into the Slytherin common room and ask Malfoy a few questions without him recognizing us."

"I'll turn into a mouse and sneak in," Zhang Chen said with a smile.

"No, every college's lounge has guardian magic. This is too dangerous. In fact, we only need some polyjuice potion." Hermione revealed the answer.

"What is that?" Ron and Zhang Chen asked at the same time.

"This potion turns you into someone else. Just think we could be three Slytherins. No one would know it was us. Malfoy would probably tell us everything. For now he He's probably bragging in the Slytherin common room, but we can't hear him."

"I think this kind of compound medicine is a bit unreliable," Ron said, frowning, "What if we become three Slytherins and can never change back?" "The medicine will take effect after a while. It will disappear," Hermione said, waving her hand impatiently, "but it's hard to get the formula. Snape said it's in a book called Powerful Potions, and it must be in the library area."

There is only one way to borrow books from the district: get an approval note signed by a teacher.

"Just find a piece of blank paper. Our teacher Lockhart will never give up signing her name if given the chance." Zhang Chen smiled and said, "I'll do this."

In the afternoon of the next day, Harry was finally discharged from the school hospital. After dinner, Harry and Zhang Chen discussed the matter of Polyjuice Potion in the Room of Requirement. Harry also agreed with Ron's conjecture and pointed the target of the matter. Malfoy.

After unifying his thoughts, the matter of making the compound potion was immediately put on the agenda. When the next Defense Against the Dark Arts class was over, Zhang Chen took a book list full of book titles and found Lockhart, "Professor Lockhart, I I want to borrow this book from the library and hope to learn some background knowledge from it.”

"Oh, let me see, most of them are in the district. Why do you want to borrow these books?" Lockhart took the note and asked with a smile. He was quite friendly to this exchange student from the East.

"Mainly some pharmacy books to help me understand the chronic attack of venom you talked about in Traveling with Ghouls, and some of its antidote preparation methods."

"Well, Traveling with Ghouls makes sense. This is probably my most satisfying book. Do you like it?"

"To be honest, this is my latest book. It combines stories, puzzles, adventures, and most importantly, it teaches everyone very practical magic knowledge. It is a rare and good book." Zhang Chen said with a full face He sincerely praised, "It would be even better if you could give me another signed copy. I would like to recommend your masterpiece to my friends in the East."

"Oh, no problem. I'll sign ten copies for you to take back. You're so right. Why didn't I think of developing my new career in the East? You know, my fame in the wizarding world has almost reached its peak." Lockhart was grinning from ear to ear.