Professor McGonagall apparently didn't expect someone to smash the door to her office, the wooden door was just an ordinary structure, and a crack opened after being struck twice by an "indestructible hammer".

Joel was overjoyed and quickly stepped forward and aimed the hammer at the gap and slashed hard.

There was a loud bang, and a wooden plank fell to the ground along with the brass doorknob.

Joel picked it up quickly, put the hammer in his bag along with the doorknob, and ran downstairs on tiptoe.

When he returned to the Transfiguration room on the first floor, Professor McGonagall had not returned, and it was estimated that Eddie's injuries were not severe.

Good brothers!

I'll be sure to bring some more gifts to visit you when I get back!

In the messy classroom, it was not found that Joel, who was sitting in the back row, had ever left.

Professor McGonagall returned to the classroom five minutes later, but Eddie did not follow him, presumably due to the severity of his injuries and having to spend some time in the medical wing.

Judging by her expression, it was clear that the door to her office had been smashed open.

"Concentrate, classmates," she pursed her lips, "I don't want Mr. Mitchell's situation to happen again!" ”

Filch suddenly limped over with a cane, "McGonagall, Professor McGonagall......"

"What's wrong, Mr. Filch," Professor McGonagall was a little displeased, "you should know I'm in class right now. ”

Filch nodded, then patted his chest with his dry palm, "Someone smashed a hole in your office door!" ”

Professor McGonagall froze in place.

The students in the classroom whispered, and even the Slytherin students were very interested in it.

Joel calmed down, he had never done such a thing in his two lives, and he couldn't help but be a little guilty at this time.

"Argus, have you found out who did it?" Professor McGonagall walked towards Filch with her chin held high.

Even though Joel was sure he hadn't seen anyone when he acted, he felt nervous at hearing Professor McGonagall's words.

Filch shook his head, "I heard the noise and rushed to the scene without seeing anyone, I suspect Peeves did it." ”

Professor McGonagall didn't say anything more, she believed that it would definitely not be Peeves, who had worked at Hogwarts for decades and knew Peeves very well, he had always only bullied students and did not dare to play pranks on the professor.

What's more, he and Peeves had no grudges in the past, and there is no enmity in the near future, why did he smash the door of his office?

She exhaled a cloudy breath with a calm face, today's class is really a lot of trouble.

"Guys, stop your wand first," Professor McGonagall said to go back to the office to see if any important materials were missing, and she didn't dare let the students practice on their own with Eddie's case today, "for the rest of the lesson, you can preview the transformation spells in the textbook and leave the classroom on your own when the bell rings." ”

"I'm going to receive a paper on your Transfiguration Charm for Objects next Tuesday, no less than 12 inches long." Professor McGonagall strode out of the classroom with these words, and Filch left with a shake of his head and crutches.

Unbeknownst to the two of them, the person responsible for smashing the door to Professor McGonagall's office was sitting in the classroom.

When Joel and the others returned to the Ravenclaw Tower after their morning class, he was finally notified by the system that the side quest had been successfully completed, which meant that Professor McGonagall had not discovered the culprit of the incident.

He breathed a sigh of relief, and took advantage of the gap between his roommates and the dorm room to hide the planks and hammers with brass doorknobs in the suitcase under the bed, and made sure that no one would find them.

A system reward appears: Congratulations to the host for successfully completing the side quest and receiving the reward: 50% of the progress of Human Transfiguration (Elementary)! 50% Summoning (Beginner) Progress! Animagus (Beginner) 50%!

It's all Transfiguration, overlapping with Professor McGonagall's subject.

The next morning he noticed that most of the students at the Gryffindor table were gloomy, and they were sitting honestly in their chairs and eating their breakfast, instead of their usual laughter.

"What's going on?" Alan was a little uncomfortable, not only him, but also the students of the other three houses at the long table, who were usually used to the noise of Gryffindor, and at this time, it was difficult to swallow their food without hearing their loud laughter.

"Professor McGonagall went to the Gryffindor common room yesterday," said fourth-year Penelope, who walked over to them and sat down, "she thought it was some of the Gryffindor troublemakers who smashed her office door, and warned them that if they had any personal opinions about themselves, they were welcome to come and talk to her in person, and not to do something shady behind her back that would interfere with her normal work." ”

"Sister Penelope, how do you know so clearly?" Qiu on the side asked curiously.

"Ah...... It was Percy Weasley from Gryffindor who told me," Penelope forked a sausage from the table, "and he suspected that his twin brother had done it." ”

"One person is in charge of attracting attention in front of everyone, and the other is taking advantage of it," Penelope shrugged, "Percy said that the two of them often used this trick to tease their brother and sister at home. ”

Joel was dumbfounded, he had seen Percy's brain replenishment ability.

The Weasley twins are really sitting at home this time, and the pot is coming from the sky.

He didn't dare to talk much, so he hurriedly ate two bites of food, and ran to the library with Sergei to continue sorting out the materials.

Eddie was injured and moved into the medical wing, and the two of them had to increase their workload, neither of them was inkblotted people, and they knew that time was money, and the sooner this outline of the history of magic was made, the sooner it would be profitable.

"Sergey, look at this place," Joel found in a pile of books on the history of magic that was not quite the same as the one written by Bathilda Basshat, "after the establishment of Hogwarts, the four founders became more and more divided, and they had very different opinions on whether or not to admit Muggle students. ”

"Salazar Slytherin even built a secret chamber under Hogwarts castle to purify Muggle blood among his students......" Joel knocked on a pile of magical histories written by other authors, "and none of the books mentioned this one." ”

Sergei snorted lightly and took the two histories of magic, he frowned and looked at them for a long time, and finally shook his head and gave up the question, "We are still mainly written by Ms. Bathilda Basshat, and there was something wrong with what we did before. ”

"These books on the history of magic are just for us to expand our knowledge, and the exams don't use these books for questions, so we spend too much time on these irrelevant books."

Joel shook his head, pulled through the parchment, and revised it on it, only to think that the authors had forgotten this one, he had read the original book, of course he knew about the existence of the secret room, and he also knew that there was a basilisk locked in it.

"Do you believe there's a secret room under the castle?" Joel asked suddenly.

"So what," Sergei shrugged his shoulders and sneered, "it's been 900 years, and even if there are any monsters in the chamber, they should starve to death, do you believe that anything can survive for 900 years?" ”