Mysterious Walker at Hogwarts

"At least not tonight - did you leave in such a hurry to catch up?" Dumbledore showed an apologetic smile, "I'm afraid I can't let you do this. My old friend will definitely not want to see you tonight. The second person besides Dean, so if you rush there now, it will only be a disservice."

"Am I just going to sit back and do nothing?" Snape asked irritably.

"This is the best choice - you should not underestimate my old friend, even if he has not set foot outside Nurmengard for half a century." Dumbledore reminded.

"I never meant to look down on him - but, after all these years, can you guarantee that he has not changed? Can you guarantee that you understand him as well as before?" Snape asked anxiously.

"I know him better than you think, but your knowledge of Thomas may not be that deep." Dumbledore hinted.

"How many other things is Dean hiding from me?" Snape quickly reacted and asked angrily.

"This is normal. Although you treat him as your own, you are not his real father after all." Dumbledore said, "Your concern for him has been a bit excessive, and it is not a good thing for him. "

"Compared with your 'concern' for Potter, my 'concern' for Dean is nothing worth mentioning!"

"Severus, the two things have different meanings and are not suitable for comparison."

"...Dumbledore, I must remind you that sometimes you are too conceited." Snape was silent for a moment before curling his lips and said.

"Maybe, but I think it's still within my control." Dumbledore said, taking out two pieces of quaint parchment and holding them over, "Mr. Thomas asked me to give this to you before he left."

"These are... two potion formulas? An improved version of wolfsbane potion and a potion formula that can make Squib a real wizard?" Snape looked at Dumbledore in disbelief, "Where did he get this? formula?"

"That's why I said that your understanding of him is too superficial and you underestimate his strength." Dumbledore reminded sternly, "I know that your recent potion research is very valuable and meaningful, but I ask you to spend more time on the people you care about and don’t repeat the tragedies of the past.”

"I've learned enough lessons and don't need you to remind me again!" A flash of pain flashed through Snape's eyes.

"You know what I mean - these two recipes are very interesting." Dumbledore nodded.

"There are traces of dark magic on it, and this feeling is very familiar. It comes from - the Dark Lord?" A truly panicked expression appeared on Snape's face, "Has he been in contact with the Dark Lord?"

"He was very cautious and smart. After getting these two formulas, he did not touch them rashly. Instead, he gave them to me and asked me to pass them on to you." Dumbledore praised, "He guessed that I would crack them. dark magic."

"This is indeed a smart choice." Snape said calmly with a sullen face.

Dumbledore knew that the calmer Snape acted at the moment, the angrier he became to the extreme.

"Severus, I have a favor to ask of you." Dumbledore suddenly asked.

"No, I think I have endured enough!" Snape simply refused and turned to leave.

"It's not about Potter, it's about Thomas," Dumbledore said softly.

Snape stopped and looked back, a look of surprise flashed across his face, "I didn't expect you to care about Dean."

"I treat all students equally." Dumbledore smiled. "In this way, Minerva is very similar to me."

"Let me think about it, maybe the savior Potter is an exception?" Snape said slyly.

"I have to remind you again that because of certain things, you have an inappropriate prejudice against Harry, which affects your judgment."

"I didn't!" Snape said rudely, "Everything I did to Potter was caused by him!"

Dumbledore looked at Snape silently without saying a word.

"Okay, I admit that I am a bit harsh on Potter, but I treat other students the same way! This is my style, and I am not prepared to change it." Snape frowned.

"Perhaps there is an exception for Thomas?" Dumbledore said cheerfully.

"Dumbledore!" Snape said dissatisfied.

"Okay, let's talk about what I want to ask you."

……

When Dean stood on the ruins of Nurmengard again, he felt deeply regretful.

He regretted why when Dumbledore asked him if he was ready to meet Grindelwald, he quickly said he was ready.

"Go to the Room of Requirement. Before you go in, think about using the teleportation space." Dumbledore suggested at the time.

At that time, Dean felt that he had discovered a secret. If the Room of Requirement could really meet this requirement, it would break the restriction of disapparation within Hogwarts. Unfortunately, he overlooked one point. Dumbledore was talking about long-distance teleportation. It's not like apparating.

When Dean actually stood in the Room of Requirement that appeared according to this request, he found that he still couldn't use Apparition, and then he realized his mistake.

Dean couldn't help but smile bitterly, what did Dumbledore mean?Do you want him to use the door key?

Dean thought about the failed portkey trip last time. If it hadn't happened to fall on the soft beach, he would have lost his arms and legs by now.

just now……

Dean glanced around and found that the Room of Requirement this time was a very empty space. There was a thick layer of gelatinous material on the ground, which would definitely act as a very good buffer if someone unfortunately fell from a high altitude.

Dean didn't know whether this was something Dumbledore had planned in advance, or whether the Room of Requirement had already considered the possibility of a "crash".

Dean kept Newt's warning in mind and did not try to use the "fixed-point teleportation" bound to the blackthorn wand. Although his magic power had increased a lot, he was still unsure whether it would be enough to support him. Use this skill.

Dean took out his blackthorn wand, preparing to repeat his old trick and use the portkey magic on the wand again.

Unexpectedly, as soon as the blackthorn wand appeared in this space, countless light spots made of magic appeared in the air, and they converged on the blackthorn wand like moths to the flame.

In just a few breaths, Dean discovered that the system prompted that the fixed-point teleportation function bound to the blackthorn wand had been charged and could be used at any time.

Can this be done?

Dean was a little confused. Could it be that Dumbledore knew about the existence of fixed-point teleportation and specifically hinted him to come here?

After Dean came back to his senses, he discovered that he had subconsciously used fixed-point teleportation.

"No, I'm not ready yet!" Dean wailed, and an even more uncomfortable feeling of being transported by a portkey surrounded him.

I don't know how long it took for Dean to feel that he had regained control of his body. He opened his eyes and found that he was in a familiar place - when Mundungus and Burke used the Portkey trap to teleport him. The ruins of the old castle we arrived at.

According to Newt's inference, this is the ruins of Nurmengard, the once infamous wizard prison that was as famous as Azkaban.