Hogwarts Passer-By Professor

Cairo, Egypt, above the head of the Sphinx, Eisen's figure appears here.

Toggle the time-travel characteristic power in his body, and then Eisen's figure disappeared in place.

On January 1, 1901, above the head of the Sphinx, the figure of Eisen appeared out of thin air. Feeling everything in this era, Eisen didn't have the mind to do other actions. Instead, he cast the Illusion Charm on himself, and then drew a "∞" mark on the top of the Sphinx's head.

Eisen then turned his mind and returned to the top of the Sphinx in 1994.

After careful inspection, Eisen did not find the existence of the "∞" mark.

Obviously, in 1901, changing the shape of an object has no effect on the present. In other words, it's as if Eisen has never moved his hands in the past.

Immediately afterwards, Eisen did not stop the movement of time travel, and disappeared in a flash.

On January 1, 1902, Eisen's figure appeared above the head of the Sphinx.

Just when Eisen was about to continue to make some small moves, he found that there was no "∞" mark on the top of the Sphinx.

For a moment, Eisen froze in place.

The "∞" imprint was engraved in 1901, and nothing was found back in 1994. Eisen has accepted this setting. But this time in 1902, the "∞" imprint carved in 1901 was not found. What's going on?

Could it be that the moment Eisen left the time and space of 1901, the "∞" imprint he engraved disappeared in an instant?

It seems that this can explain why he did not see the mark of "∞" in 1902.

Thoughts turned in his mind, Eisen did not stop his actions. After engraving the "∞" mark at the same position on the top of the Sphinx, Eisen returned to the top of the Sphinx in 1994.

As Eisen expected, there is still no "∞" mark on it.

Immediately afterwards, Eisen continued his experiment of traveling back in time.

The top of the Sphinx head in 1903 --

The top of the Sphinx in 1904 --

...

The top of the Sphinx head in 1945 --

The top of the Sphinx in 1946 --

...

Dozens of experiments, after Eisen left the mark of "∞" in the past every time, returned to the year 1994, but found nothing.

Eisen has gradually become numb to this.

Until this time!

On January 1, 1972, after Eisen left the "∞" mark on the same position on the head of the Sphinx, he went back to 1994 without any hesitation.

Eisen, who thought that there would be no change, suddenly found the imprint of "∞" at the same position on the head of the Sphinx.

Eisen, who was already a little numb, suddenly shuddered and stopped his movements instantly.

Etc., etc--

"What's the change?" Eisen muttered. "A change in time? What's different about 1972?"

1972 - 1972 -

Eisen paced on top of the Sphinx, and after a while, his face showed a look of surprise: "1972, the year I was born?"

Is there anything special about the year Eisen was born? Or, in this world, his birth is special?

"The past before I was born, history cannot be changed? The time after my birth, history can be changed?" Eisen murmured, feeling a little surprised.

Is that so?

Eisen suppressed the thoughts in his mind and continued to travel through time, arriving at the top of the Sphinx in 1973.

As a result, Eisen also found a "∞" pattern on it. Apparently, if Eisen's guess is right, that's where he made his mark in 1972.

This -- seems to confirm Eisen's thinking.

After engraving the next "∞" mark next to the "∞" mark, Eisen returned to 1994 in a flash.

On the top of the Sphinx's head, as Eisen expected, there are two "∞" marks.

Traveling through time, in 1974, Eisen saw two "∞" marks on the Sphinx. After engraving the "∞" mark again, Eisen returned to 1994.

The number of "∞" marks on the Sphinx became three without any accident.

After confirming his idea, Eisen stopped and did not continue to travel through time to conduct experiments.

At this point in the experiment, the conclusion seems to be obvious.

Apparently, Eisen's return to the past time will be divided by 1972-the year he was born. Back before 1972, some of the changes he made would be erased directly after he left.

After 1972, the changes made by Eisen will change history accordingly.

At this moment, Eisen had a faint intuition in his heart, feeling that the truth of the matter was almost like this.

He does not need to go back to the past to change the life trajectory of certain characters, nor does he need to change certain historical events to confirm that the reason why he can change history or cannot change history is because of the time point of 1972.

However, after drawing such a conclusion, Eisen still felt very confused.

Because something like this is obviously unreasonable. For example, what happened in the year he was born, and why did this result.

What kind of means can make Eisen go back to before 1972, can change history at will without worrying about disturbing the future? By what means can all the changes made by Eisen before 1972 be undone?

This seems a bit outrageous--

Isn't it the world of Harry Potter? Why is it so complicated?

For a moment, Eisen's thoughts were racing, and he didn't know what to say.

After a while, Eisen finally calmed down and regained his former calm.

Now that some things have been clarified, you can travel through time to investigate slowly in the future, and don't rush for a while. After thinking about this, Eisen breathed a sigh of relief.

Looking at the three "∞" marks on the top of the Sphinx, Eisen had a thought, erased the "∞" marks, and directly restored them as before.

Afterwards, Eisen returned to Hogwarts in a flash.

...

The Easter holiday is coming to an end, so Eisen will go to No. 12 Grimmauld Place, the old house of the Black family, to talk to Sirius Black.

After all, Eisen had told both the trio and Hagrid that he would vouch for Buckbeak.

On Sunday, the last day of the Easter holiday, Eisen came to the Black family's old home.

"Hello, Professor Eisen, what are you doing here?" After Black welcomed Eisen into the room, the atmosphere seemed to be relaxed.

The Easter holidays were coming to an end, and Black was still a bit regretful that Harry wasn't able to spend this holiday with him. In this regard, he had learned in the letter, mainly Harry was busy with homework and Hagrid's Buckbeak business.

Blake also understands this very well. Anyway, summer vacation will be in a few months. At that time, he can go to King's Cross to bring Harry home.

[To be honest, I have been using Yeguo to read and read books recently, change sources, and read aloud with many timbres, yeguoyuedu Android and Apple are all available. 】

"That's right, Sirius, I need to talk to you about something!" Eisen looked around the room, then sat down across from Black.

"About Regulus, I need you to help me some time ago!" Black nodded with a smile, and seemed to be quite kind to Eisen.

"That's nothing, I just did a little bit!" Eisen raised his mouth slightly, and then shook his head slightly.

"By the way, do you have anything to say?" Black asked calmly.

"Well——the Hippogriff next to Hagrid is called Buckbeak!" Eisen nodded, ready to introduce it to Black.

"I know that! Buckbeak was tried by the Committee for the Disposal of Dangerous Creatures for injuring a Slytherin student, right?" Black frowned slightly.

"Harry told you?" Eisen was slightly relieved.

"During the Christmas vacation, I heard him mention it!" Blake nodded, "That student is called Della Comalfort, right? He's a scheming guy just like his father—"

"Uh—Harry and Ron, they're at school, they've been trying to come up with some proper defense for Buckbeak these past few days over the Easter break, and that's what I'm going to say!" Eisen didn't answer Blackbeak, and It directly stated the purpose.

"You want me to find a way to exonerate Buckbeak?" Black frowned and shook his head, "With all due respect, with Lucius behind us, I have no way to influence the decision of the Dangerous Creatures Committee. "