A space was cleared in the middle of the lounge, and the seats and sofas moved by the little wizards were placed in an irregular circle.

In the middle of the circular space, two magic puppets were fighting fiercely.

One of the magic puppets had crackling arcs and sparks on its fist, and it punched its opponent in the face, and it immediately stopped moving.

"Four to two! The first finalist is Angelina Johnson! Let's cheer for her!" Fred, the referee, said, "At the same time, she will get a coupon for a couple's mirror and participate in the lottery for guessing the ticket..."

"It's a lottery." George next to him reminded him, and Fred changed his words: "Yes, lottery."

"Then the next game! Professor Hai, Professor Haipu?" Fred found Felix and waved his hand at George in a panic. George put away the parchment in front of him tacitly.

"Are you gambling?" Felix looked at him.

"No, no." Fred explained, "We are promoting the couple mirror and having fun at the same time."

Felix looked at him with a suspicious expression, and Fred swore, "Absolutely not, if you don't believe me, ask them." The other little wizards nodded.

"Well, where's Percy?" Felix didn't ask any more.

"He's not here, professor. I guess he's with Penelope." Fred said without hesitation. "I can provide a few places for them to meet."

"Ahem, there's no need for that." Felix felt a headache for Percy. He raised his voice and said to the little wizards around him, "I'm here this time to collect your Christmas detention list on behalf of Professor McGonagall. Come and fill it out and tick the corresponding options..."

"Well, put the form here for now. I'll pick it up in the afternoon if Professor McGonagall hasn't gotten rid of her little trouble."

The little wizards gathered around one after another.

Felix stood aside and looked at the Gryffindor common room. It was his first time here. The layout here was different from Slytherin or Ravenclaw. It used gold and red as the main colors and the shape was very much like a large round living room.

The common room had both soft armchairs and sofas, as well as small, sturdy wooden chairs and tables. The noticeboards were covered with notices, posters, and messages written by students themselves.

The latest eye-catching ones were the promotional advertisements for the Weasley twins' love mirrors and the news that Ravenclaw defeated Hufflepuff in the Quidditch match at the end of November.

Below this news, there was a line of inspiring handwritten flashing words: "We still have a chance!"

The overall layout of the common room had both large open areas and grid spaces divided by partitions in the corners.

In addition to a huge fireplace that took up an entire wall, the other three walls were hung with scarlet tapestries with portraits of many famous wizards and witches, as well as some animals.

Felix thought that the majestic flaming lion he saw was very similar to the one Professor McGonagall showed in the dueling class.

'Maybe it's some kind of magical creature? ' He guessed in his mind.

"Professor," Hermione had just finished filling out the form and walked over with Harry and Ron.

Felix looked at them with a smile: "I heard that your duel study group is doing well?"

Harry couldn't help scratching his head, "It's mainly the three of us practicing, Dean, Seamus and others come over occasionally."

Felix said: "Harry, I've read your duel system paper, it's very suitable for you, when you can easily integrate it into every battle of yours, it means that you have thoroughly mastered the things in the paper."

Ron said: "I think Harry is now..." Harry hurriedly grabbed him.

Felix looked at Ron and asked with a smile: "Do you mean that Harry has now achieved the duel system constructed in the paper?" Seeing that the professor didn't look angry, Ron nodded bravely.

This is Ron's personal experience. If it weren't for the disarming spell, he could still fight with Harry for a few moves. After all, he barely mastered the armor spell, the coma spell and other spells.

But facing Harry's disarming spell at its maximum power, all his resistance was ineffective. His armor spell was like a funny cookie that broke from the middle, and the wand flew out, and he was knocked away. There was no second possibility.

Or, Harry could turn the trajectory of the disarming spell into a magical arc, and with the steps he learned from the dueling class, he could always easily break through his defense.

This also made Ron secretly anxious. He didn't want to be left too far behind when even the food in the cafeteria didn't smell good.

Felix thought about it and decided to test it. "Look at me, Harry." His eyes turned silver-white. Harry met his gaze and was stunned for more than ten seconds. Suddenly, he stumbled and almost fell.

"Professor?" Ron supported Harry and looked at Felix in surprise. He almost thought that the professor in front of him was Black in disguise.

The reason for thinking this was that they had done something similar last school year, sneaking into the Slytherin common room with the help of Polyjuice Potion, trying to get information about the heir of the Chamber of Secrets from Malfoy.

They had discussed before that if Black wanted to sneak into the Hogwarts castle, Polyjuice Potion would be a good way. However, the final result of the discussion was that this possibility was not great, because it was difficult for Black to break through the peephole defense line at the entrance of the castle.

"I'm fine," Harry said breathlessly, "Professor Hep, what is this?"

"It's a magic that I have that's unique to me. Although it's not absolutely accurate, it can still be used to test your progress." Felix said.

Harry said with great admiration, "I dare say that this magic is definitely not ordinary. I can actually fight with you in my mind..."

Ron looked at him in shock. What did Harry say, fighting in the mind? Is it what he thought?

"Is it the Mind Hut, Professor?" Hermione guessed. She used to practice ancient magic in the Mind Hut and had never fought.

"Well, it's just a little similar. To be honest, I have made too much progress in the field of memory magic recently. I have discovered a lot of new techniques, but I haven't had time to name them." Felix said.

He passed on the topic and looked at Harry, Ron and Hermione, "From the test just now, it can be seen that Harry has not yet mastered the duel system he proposed, especially in the various details, there are still many problems... In fact, Harry's problem is also your problem.

It takes more than one threshold to go from theory to practice, and it takes even longer to turn it into an instinctive reaction that does not require thinking."

He said seriously: "For some people, this time may be a lifetime."

"Of course, the three of you are talented wizards. The only enemy you need to defeat is complacency, which will stop you in your tracks."