Cowan and Dumbledore watched as the parchment was rendered in ink, and gradually turned into a map with a complex structure, and then a dense number of names appeared on the map, and there were two points next to each name corresponding to it. footprints.

Some footprints are walking like a cartoon, while others stay in place.

"It's very interesting." Dumbledore held the glasses with his left hand, and smiled while carefully observing the map: "Not only this map is interesting, but it is also interesting to open the password."

After looking at it for a while, Dumbledore looked up and asked, "How did this map come from?"

"They got the Weasley twins."

Cowen answered with a bit of concealment. After all, it can't be said that the twins stole it from Filch's office.

Dumbledore said with a smile: "Oh, it's them, they always give people a little surprise."

"So..." Dumbledore asked instead, "My boy, what do you want me to see from this map?"

"Sir." Kewen organized the language, then made up a story and said, "You said about Sirius at the dinner party before, you know my memory."

In Dumbledore's nod, Cowen continued: "During the holiday, I just received the news of Sirius' escape from prison, so I went to the relevant newspapers of the year to find out. If I remember correctly, Sirius Black killed him. Peter Pettigrew's murderer, right?"

Hearing this, Dumbledore seemed to think of something regrettable, and nodded slowly in disappointment: "Ah, that's it, although I'm still skeptical about it, but everyone else thinks so."

Cowan knew why Dumbledore was showing such an air.

Dumbledore, the 'Master of Divine Intent', learned from Sirius that the other party was not the murderer.

However, there is no evidence that Sirius did not defend himself because of his sadness.

Therefore, Dumbledore alone would have no way to prevent Sirius from being imprisoned.

Dumbledore would naturally feel very sorry that the innocent Sirius had been in prison for twelve years.

At this moment, seeing that Dumbledore was a little absent-minded, Cowen immediately continued: "The old newspapers said that Peter Pettigrew was bombed to death, leaving only one finger, right?"

Dumbledore nodded slowly subconsciously, without saying anything.

"That's very interesting."

Ke Wen smiled slightly, and then said to Dumbledore who looked at him in surprise, "Don't get me wrong, Mr. Principal, please listen to me."

"Ah...of course." Dumbledore knew that Cowan was not the kind of person who spoke badly.

"Look." Kewen spread his hands: "You know that I will focus on 'Animal Transfiguration' this year, and then I thought of something because of this name."

With that said, Kewen stretched out his wand and touched a name in the Marauder's Map.

Dumbledore subconsciously followed the position pointed by Cowen, and then his pupils suddenly shrank.

Holding on to his glasses again, he leaned over to carefully check the names on the Marauder's Map, and Dumbledore couldn't help showing a stunned look.

"You read that right."

Cowan raised his wand slightly, and then re-pointed the name of the 'Peter Pettigrew' on the map: "I saw this name when the Weasley twins showed me a map the year before last."

"But at the beginning, I didn't know what the name represented, so I didn't pay attention to it."

"But today you highlighted Sirius Black, and I thought of this name, and then I suddenly had some conjectures."

Dumbledore looked a little excited, took a deep breath and said, "Please go on!"

"Peter Pettigrew." Cowen tapped the map with his wand again: "Transfiguration, and the most crucial point..."

In Dumbledore's expectation, Corvin moved his wand and finally clicked on Ron's name, and then said: "You may not know that Ron's pet mouse, Scabbers, happens to be missing a toe."

Bang!

As soon as Kewen finished speaking, Dumbledore suddenly slapped the desk angrily, with a gloomy expression on his face, his eyes fixed on the name 'Peter Pettigrew' on the map.

After a long time, Dumbledore calmed down again, sat down slowly with a look of fatigue, and then said, "Sorry, I'm a little rude."

Kewen returned an understanding look.

With a sigh, Dumbledore thought about it and said, "Can you lend me the map for a few days?"

"Of course." Ke Wen nodded.

"Thank you child," Dumbledore whispered. "You always give us unexpected rewards."

Hearing this, Kewen said sincerely, "I am also very happy to be able to help you and the professors."

"Good boy."

Dumbledore looked kindly and praised again.

...

...

All the clues were handed over to Dumbledore, and he didn't have to worry about anything after that.

The next focus, Kewen will be on 'Animal Transfiguration'.

Also coincidentally.

In the past few years, the professors were worried about his lack of ability, so they did not allow him to try to practice 'Animal Transfiguration'.

Last year the professors thought the time had come, but were delayed by the basilisk.

After that, during the holidays, couldn't find more energy because had to practice the 'Mind Reading Mantra'.

It was not until the start of school that Kewen got rid of all interference factors and could finally start to learn 'animal transformation'.

That's why he was so eager to get all the clues to Dumbledore as soon as possible.

He didn't want any unexpected situations that required him to participate in the process of mastering the 'Animal Transformation Technique'.

So, Kewen, who was completely relieved, started from the first step of the 'Animal Transformation Technique'.

First, he asked for a 'mandrake leaf' from Professor Sprout, and then asked Zhang Qiu about the lunar date.

Zhang Qiu wrote a letter to his family, and soon got the lunar calendar and gave it to Kewen.

Then Kewen began to wait.

He waited until the full moon night on the fifteenth day of the lunar calendar, and he began to put the mandrake leaves in his mouth.

Until the next full moon night on the fifteenth day of the lunar calendar, Kewen cannot swallow or spit out the herbal leaves.

He had to keep the herbal leaves in his mouth for a full month, otherwise he would have to start all over again.

The experience was a bit painful for Cowen.

You can talk less, you can pay attention to drinking water, but you must be careful when you eat, which is a bit embarrassing.

This situation caused Kewen to not have enough to eat for many days in a row.

Even so, he almost swallowed the herbal leaves many times.

too difficult……