After a long time, Felix stepped out of the thinking room.

To the outside world, he seemed to be in a daze for more than ten minutes, but Mrs. Longbottom held her breath and asked with trembling lips: "How is it... I saw Frank suddenly stopped moving."

Felix pinched his temples and sat down on the chair next to him with some fatigue: "It's a huge project, but," he showed a bright smile, "I have a way to treat it."

Mrs. Longbottom let out a suppressed scream, she covered her mouth tightly, her eyes were suddenly covered with a layer of mist, she took a few steps back and sat on the bed, "Is it true, Professor Hepp? Mr. Hepp, I hope - oh, I don't want to ask too much, as long as they can remember something..."

"No, no, ma'am. I had a plan before I came here, so either I can't do anything, or in theory it can be completely cured."

Felix said in a relaxed tone: "Although it may seem that I am not humble enough to say this, what I am most worried about is facing a fragmented soul.

If this is true, even if I have received some guidance from a magic master, the possibility of their recovery is still very small.

But fortunately, the worst case scenario did not happen. I only need to complete a puzzle, and maybe I need to use some emotional power..."

The old lady Longbottom calmed down, and she said cautiously: "Can I understand your treatment philosophy? After all, Frank and Alice have been sentenced to death by the most authoritative healer in St. Mungo..."

She originally wanted to keep these words in her heart and pretend to trust Felix completely, so that she could spend a few months full of hope, but as a tough witch, she has her own persistence in sending her son and daughter-in-law to the battlefield.

"Of course, please don't resist." Felix snapped his fingers again and pulled her into the thinking hut.

After a while, she suddenly said in high spirits, "This is the Mind Hut, a powerful memory magic? It's a miracle. I already believe you can do it. I need to find Meliam..."

"Oh, please don't do this for now, ma'am. I don't want too many people to know about this. It hasn't worked yet, right? Not everyone will accept the instructions of outsiders." Felix said in a persuasive manner.

"You are right, Mr. Hep." Old Lady Longbottom considered his suggestion seriously. She didn't want to cause trouble and avoid interference from St. Mungo's, but she was going to consult Dumbledore.

This has nothing to do with trust or not, but Dumbledore, as the founder of the Order of the Phoenix, has the right to know about this. Besides, he can help to find out the gaps.

"Mr. Hep, in your opinion, how long will it take to see the effect?"

"I can spare one morning every week. To be honest, I am willing to spend more time. This is really an interesting topic. Maybe after success, the magic of my Mind Cabin will reach an incredible level..."

Felix's voice gradually became inaudible. He always believed that the Room of Requirement was Ravenclaw's "Mind Cabin", so he had been thinking about how to make it a reality.

On the night when he restored the Zooming Spell and obtained the Rune Ball, he touched a little bit of this realm - he pulled out thousands of rune symbols from the Mind Cabin, but this special state never succeeded again.

Now, he saw hope again.

Felix said to old lady Longbottom, "I can't guarantee the exact time, but I think they should be able to recognize their family members around Christmas at the latest."

"I am looking forward to it, Mr. Happ. This may be the best Christmas gift I have ever received in my life."

"I don't want to pour cold water on you, ma'am. But we'd better maintain limited optimism to avoid accidents."

"Is this your motto, always be vigilant? I thought of a friend who is also pessimistic about the future."

"No, I just prefer to create the future with my own hands."

...

When they walked out of St. Mungo's Hospital for Magical Maladies and Injuries, the two discussed the matter of artificially creating magical riots. Felix had not thought it through yet, and he just provided some ideas in general.

"My approach may hurt Neville's feelings, so I must get your approval." Felix said, he felt that he was a little evil, but he still said it.

"If I didn't know you well, I would think... And, aren't you worried that Neville will misunderstand you?" She couldn't help asking.

Felix shrugged, "I will ask for his forgiveness later, no matter what he says about me."

Old Lady Longbottom looked at him with a complicated expression: "I may never understand the thoughts of a Slytherin, even a good person like you. According to what you said, if successful, the child will stimulate stronger talents, at least not much worse than others..."

She added: "And you may suffer a lifetime of misunderstanding, Mr. Hep, the child is more stubborn than you think."

Felix reminded her calmly: "Madam, I don't want to flaunt my innocence. In fact, I am discussing with you how to hurt a child to the greatest extent, even if it is only temporary."

"I am also his grandmother, and I have my reasons for doing this, but you... If other people know, how will they look at you? Some people will criticize you fiercely. I know those boring people."

"Yes, yes," Felix said softly, "but I won't stop because of the eyes of others."

At his invitation, he and Old Lady Longbottom used Apparition to the edge of the Forbidden Forest. The two walked all the way into the castle.

She looked at everything in the castle with nostalgia: "I was tripped by this spiral staircase when I was in school, and... I remember there was an ugly huge stone monster in front of Dumbledore's office."

They soon came to the "ugly huge stone monster" she mentioned. Felix stretched out his wand, and a silver beam of light passed through the gap of the stone beast and disappeared. After a while, the silver beam came back and turned into a silver-white swift.

It landed on Felix's shoulder, raised its head, and made a crisp sound from its mouth: "Iced lemon juice."

The stone beast suddenly came to life, rotated out of the way, revealing the spiral staircase on the inside.

"Let's go, Dumbledore is waiting for us." Felix said.

Pushing open a glittering oak door, Dumbledore was looking at them with a smile. He stood up from the chair, "Mrs. Longbottom, I am surprised by your arrival."

Old Mrs. Longbottom pursed her lips, "Dumbledore, I need to use your wisdom." She began to tell what they talked about.

Dumbledore had been listening quietly, with a look of surprise occasionally flashing across his face, but he did not try to interrupt her. He waited until she finished speaking before he smiled and said, "So, I will be able to see my two old friends soon?"

"As for the artificial construction of magical riots..." He frowned and looked at Felix: "I have reminded you that any research on magic itself may lead to extremely dangerous consequences."

"I agreed." Old Lady Longbottom insisted, "Neville, I believe, would make the same choice if he knew. It's just that we can't tell him in advance."

Dumbledore fell silent, and after a long time he said with emotion: "Maybe I'm too sensitive. From my point of view, your approach is not very dangerous, although, this may..." He looked at Felix and asked a similar question: "Aren't you afraid of being misunderstood, Felix?"

Felix said calmly: "This matter is good for everyone, and it is especially good for me, so I don't mind pushing it forward."

Dumbledore muttered in a low voice, then he said: "Felix, you stay later, we will discuss this part in detail. As for Mrs. Longbottom, you..."

"I'll go find Neville," she said vigorously, "take him to buy a new wand-through Minerva's fireplace, go quickly and come back soon."

The door behind him closed.

Dumbledore's expression became serious. He stared at Felix and said in a deep voice, "Are you sure about the treatment of the Longbottoms? To be honest, after the tragedy, I have tried many times to mend their broken memories, but the Longbottoms were in such a bad condition that I was completely helpless."

Felix laughed softly, "Principal Dumbledore, I once received selfless help from Ms. Rowena Ravenclaw..."

For him, in addition to the magic of the Mind Hut, there was one thing he did not reveal to old lady Longbottom, that is, the memory node inherited from Ms. Ravenclaw, or the soul node.

This was his greatest source of confidence.