Principal's office, meditation basin.

Dumbledore followed William's memories and watched the whole process, at this point he had entered the most crucial part.

Tywin walked briskly towards the Ravenclaw common room, his wide robe tumbling.

"Professor Tywin, why are you here?"

Before Robert could finish his sentence, Tywin's white right hand squeezed his ebony wand.

"Faint!" Robert was caught off guard and fell to the ground defenseless.

Tywin pulls a vial of blood from his robes, a worn-out parchment scroll.

Dumbledore's pupils shrank, and he said solemnly: "The Three Books of Esoteric Philosophy, written by the sixteenth-century wizard Heinrich Agrippa.

It explains the relationship between the human body, the zodiac signs and the planets, and also records the magic that breaks the seal.

I've always wondered how Tywin was able to get the ring by circumventing Ravenclaw's magic, I see. ”

Dumbledore seemed to be teaching William, and William listened attentively.

He didn't just listen attentively, he was salivating. Although there are many banned books in the library, they are all from the school, what does it have to do with William?

Besides, who would dislike having too many treasures? That set of parchment rolls is a treasure at first glance.

Professor Tywin took the parchment scroll in his hand, flipped to a certain page, and began to draw something seriously with a black crow's feather, stained with the blood in the bottle.

Not a single drop of blood fell, forming an obscure pattern that flowed in mid-air.

He quickly finished the work, fumbling around the collar of his robe, pulling out two time turners.

Professor Tywin placed the time turner in the middle of the pattern, and the two objects were suspended in mid-air.

He pointed his wand at Robert's head again.

"Avada suo!"

Robert's face twisted, he seemed to be in pain, the wind blew, and the blood-colored beads of blood began to tremble.

This is undoubtedly a magic that requires a blood sacrifice, and Robert is the sacrifice.

With Robert's death, the short needle of the time turner began to spin violently.

A puff of white smoke, slowly puffed out from the hour hand, and landed on the doorlink with the guidance of an ebony wand.

The knocker absorbs all the energy of the time turner!

The knocker let out a sound of satisfied pleasure, as if it hadn't eaten something so delicious in a long time, and it greedily demanded more energy.

But Tywin didn't care, he stole three time turners, and now only one remains, and he can't destroy it.

Excitedly, he removed the knocker and put it in his hand, gouged out Robert's left eye, placed it on the wooden door, and turned to leave.

This art is reserved for Dumbledore!

"Thank you, William," Dumbledore whispered, "let's go......"

William fell back to the floor of his office, and Dumbledore was already sitting behind his desk. William sat down as well, waiting for Dumbledore to speak.

"A complete memory," Dumbledore finally said, "it confirms my suspicions, proves me right.

Since you've come to me and decided to leave the time loop, do you understand? ”

William nodded, the whole thing was very complicated, if it wasn't for a wizard with strong logic, he wouldn't understand the ins and outs at all.

"Professor, it's the time turner." William pondered his words and said quickly.

A time turner is a device used to travel through time and looks like an hourglass hanging from a gold necklace. The number of times the hourglass is turned represents the number of hours that time is back.

The time turner works because of the "hour reversal spell".

The wizards encapsulated the spell into a small enchanted hourglass that could be worn around the necks by the wizards and rotated as many times as they wished to rewind.

William first heard the phrase "Hour Reversal Charm" in Professor Binns' class, when Autumn was asking about the Ravenclaw ring.

At that time, William didn't pay much attention to it, because he didn't know the effect of this spell until he studied a lot and saw it in a certain spell book in seventh grade.

Dumbledore had told William that he had to spend more time studying, knowing that William would discover the spell sooner or later.

It was also from that day that William began to suspect that Tywin had obtained a time turner so that he could appear in several places at once.

Dumbledore also reminded William that it was Tywin who attacked the Ministry.

Why did he attack the Ministry of Magic, because the Ministry of Magic has all the time turners hidden!

This is also the reason why Fudge did not dare to speak out, what was lost was the time turner, which was likely to change history, and the people would inevitably panic when they heard it.

"Now that you know the time turner, you should also understand how Tywin did all this?"

Dumbledore asked, leaning back in his chair, extremely relaxed.

"I have a general idea." William laughed.

All the headmasters in the portraits no longer pretended to sleep, they seriously pricked up their ears and began to eavesdrop openly.

William said confidently, "Since there are four Tywins at the same time, then he has used the time turner three times at least in the same time period. ”

"The first time was when you went to the Ravenclaw Tower.

I'm guessing that in the original history, you did arrive at the Ravenclaw Tower and meet Professor Tywin.

He knows that he is no match for you, so he uses the time turner to make the first crossing, stop at the staircase in advance and wait for your arrival, and then use Voldemort's information to get you back to the headmaster's office. ”

Dumbledore nodded and said, "That's right, I heard a warning from Lady Grey.

If it weren't for Tywin's insistence, I would definitely go to the Ravenclaw Tower. ”

William suddenly remembered the day of the Sorting House.

At that time, Hufflepuff's ghostly fat friar mentioned that Barrow the Bloody went to Lady Gray and said that something was wrong with the Ravenclaw Tower.

Now it seems that Tywin must have sneaked in.

He was either going to steal the knocker, or to make sure that Ravenclaw's ring was a knocker or not.

This Ms. Gray is not simple, William knows for the first time that ghosts still have the ability to warn!

William suddenly became interested in Ms. Gray.

William's mind wandered for a moment, but he continued, "In the hallway on the fifth floor, Tywin ran into Professor Snape.

However, the man was disguised by Tywin using Polyjuice Potion, so this time he also used the Time Converter, but it was definitely not the second time he had used the Time Converter. ”

"Why?" Dumbledore's eyes flashed with appreciation.

"Tywin, who became Snape, was badly wounded, and there must have been a couple of fights in between."

William continued, "In the hallway leading to the Ravenclaw Tower, Tywin encountered another attack.

The attack was deliberately ambushed, and both men were injured to varying degrees before seeing Tywin and using the Time Turner to disappear.

I think this is the second time he's used a time converter. ”

William stretched out his wand and expertly stirred the meditation basin, only to see two Tywins who were fighting appear in the basin.

"Professor, look." William pointed somewhere.

"Tywin was uninjured at first, but 'Tywin', who was ambushed in the Ravenclaw corridor and preparing to attack, was wounded.

After an attack, are the wounds of the two people exactly the same? ”

William's speed of speech grew faster and faster, and he said seriously, "This means that after Tywin was attacked, he used the time turner, traveled back, and then ambushed in the hallway.

He didn't know who the attacker was, and although he looked exactly like himself, he suspected that someone had also used the polyjuice potion.

It's just that when time passed, the 'Tywin' who attacked him didn't come, but the first self came! ”

William's words echoed in the office, and all the principals exchanged ears.

William's meaning is simple, Tywin meets another "self", the two have a fight, and in order to investigate, he travels back and ambushes in the corridor.

But by mistake, he who crossed back was the one who attacked him!

……

……

(The second update, ask for recommendation votes)