I've already become a Hogwarts professor, and the system only just appeared.

“Yes, Professor Sue.” Harry cooperated. “We came out of the girls’ washroom on the second floor and were heading back to the dormitory when we ran into Filch on the third floor.”

Hermione continued, "We've already lost 30 points to you, and we don't want to get caught by Filch, so we've been hiding here."

“We only dared to come out after Filch left, and then Harry said he heard that voice again, so he quickly sent you a message,” Ron added at the end.

"Which direction is the sound coming from?" Su Yu asked Harry.

"It's from the second floor! Compared to before, that sound seemed...miserable!" Harry's face was grim; he clearly didn't want to recall the sound.

Su Yu nodded: "Alright, you guys should go back to sleep. If you run into Filch again, just tell him I need to talk to you."

"Ok."

After the three little ones walked away, Su Yu returned to the second-floor washroom once again. It was still very quiet there, except for Myrtle, who was peeking out from behind the toilet stall.

"Myrtle, did something happen here just now?" Su Yu asked.

When Myrtle saw that the person speaking to her was Su Yu, she immediately shrank back in fright and shouted, "Pervert! Big pervert! Spying maniac!"

Su Yu was a little embarrassed. Seeing that he couldn't get any information out of him, he had no choice but to transform into a crow and fly towards the Ravenclaw common room.

When Su Yu arrived, Zola had just returned as well. Like the two people before him, Zola was also pale and delirious, as if she had simply gone back to her room and fallen asleep without thinking.

Instead of calling Zola, Su Yu quietly took a picture of her face. If someone saw him at this moment, his reputation as a perverted voyeur would probably be confirmed.

Therefore, Su Yu was very careful. After taking the photos, he immediately returned to his office and turned on the video recording function of the guards in the Ravenclaw common room.

By entering Zola's photos into the search bar, Su Yu quickly found 65 videos, some of her leaving home in the morning, some of her returning in the afternoon, and some of her reading alone in a corner of the common room.

Su Yu carefully examined each item, looking around Zola from various angles for any suspicious figures.

Half an hour later, a figure finally came into Su Yu's sight. She had black hair and black eyes and was very beautiful. She was Zhang Qiu, a Chinese student at Ravenclaw.

The video shows that Zhang Qiu's expression was very conflicted. He observed in the lounge for a long time, and as it got later and later, when there were fewer and fewer people in the lounge, he set his sights on Zola.

Zhang Qiu stood up, slowly walked behind Zola, and took out a black notebook from his pocket.

Then she opened her notebook, held the pages up to Zola's back, and no change was visible in the video. About a minute later, Zola stood up from her seat and walked blankly out of the common room.

Su Yu was genuinely surprised that the person holding the notebook was Zhang Qiu. He recalled their first meeting before the start of the semester, the deep father-daughter bond at King's Cross Station, and Zhang Qiu's strange behavior after the start of the semester.

One thing after another, scene after scene, seemed to match up again. Finally, Su Yu's gaze fell on the notebook in Zhang Qiu's hand in the video, and he muttered to himself, "Finally, I've caught you!"

Chapter 120 Tom Riddle (Part 1)

On the morning of Christmas Eve, Zhang Qiu got up very early. She walked nervously toward Su Yu's office. Just moments before, she had received a message from Su Yu asking her to come to his office.

Zhang Qiu was very nervous, with a bad feeling in her heart, because this was the first time that Su Yu had taken the initiative to call her to his office via Fetion.

Throughout the semester, she was under constant stress, often suffered from insomnia, looked listless, and had heavy dark circles under her eyes.

After knocking on the office door, Su Yu quickly came out to open it, his face still bearing a smile, as if no different from the previous times.

"Come in and have a seat!" Su Yu let Zhang Qiu in, pointed to some candies on the desk and said, "Have some. Some of these are from Chinatown in New York, they're really good."

"Thank you... thank you, Professor Su. Is there something you need from me today?" Zhang Qiu picked up a large rooster from the table.

The rooster crowed and was then stuffed into her mouth. The next moment, a rich, milky flavor filled her mouth, which calmed Zhang Qiu down considerably.

"Are you planning to go home for Christmas?" Zhang Qiu asked.

"I'm not going back. I'll stay at school this Christmas," Zhang Qiu answered truthfully.

"How have you been at school lately..." Su Yu asked a series of unrelated questions, and Zhang Qiu answered them one by one.

Suddenly, Su Yu changed the subject and asked, "Where were you last night?"

"Huh?" Zhang Qiu's heart skipped a beat when she heard this sudden question, and her mind raced: "I...I...I'm in the dorm!"

Su Yu interlaced his fingers, staring intently at Zhang Qiu, and continued, "I hope you can tell the truth. It's better for you to say it yourself than for me to point it out directly."

In fact, Su Yu was already 90% certain that it was Zhang Qiu. He could have used more radical methods, such as using coal balls or searching the dormitory.

But considering Peter Zhang's performance and Qiu Zhang's behavior this semester, Su Yu felt that the child must have encountered some difficulties, and he was willing to give Qiu Zhang a chance.

Zhang Qiu's face turned pale, and her eyes welled up with tears, but she still gritted her teeth and said, "Professor Su, I really am in the dormitory. If you don't believe me, you can ask my roommates."

Su Yu leaned back in his chair with a tactical backward movement, remaining silent and staring intently at Zhang Qiu for a long while before finally speaking:

"Zhang Qiu, this is your last chance. If you still have nothing to say to me, you can leave. But you should know that if this matter is found out, you may face Azkaban!"

Upon hearing the last word, Azkaban, Zhang Qiu finally broke down, tears streaming down her face as she sobbed, "I can't say, I can't say, it's all over me... If I say it, my mother will die, my father will die... Waaah..."

Is it some kind of curse again? Su Yu had a headache. He thought for a moment and said, "In that case, I'll say it, and you just need to nod or shake your head, okay?"

Zhang Qiu nodded.

"Someone gave you a black notebook and told you to bring it into Hogwarts Castle, right?"

Zhang Qiu's eyes widened instantly. She hadn't expected Su Yu to know so much detail. Just now, she thought Su Yu was bluffing her, but now she understood that Su Yu knew far more than she had imagined.

Zhang Qiu nodded.

Su Yu continued, "That notebook is in your dorm now. It can control other people's minds. It was it that petrified Mrs. Lorice before, right?"

Zhang Qiu covered her face in pain and continued nodding.

"Your mother has been captured by that man, and if you don't do what he says, he will kill your mother, right?" Su Yu guessed, feeling that villains usually liked to do this kind of thing.

Seeing Zhang Qiu nod, Su Yu thought to himself, "As expected." However, he was now increasingly curious about who the person who kidnapped Zhang Qiu's mother was, but Zhang Qiu couldn't say, which was really a headache.

Suddenly, Su Yu had a flash of inspiration and said, "Zhang Qiu, let me tell you a story. Once upon a time, there was a little girl whose mother was kidnapped, and the kidnapper threatened her to steal things."

"The little girl was indignant, but dared not resist. She could only draw a portrait of the bad guy and paste it in her room, and throw stones at him every day."

At this point, Su Yu waved his hand and said, "Alright, Zhang Qiu, you can go back now!"

Zhang Qiu was a little confused. Why did Professor Su suddenly start telling a story? And to make matters worse, this story didn't even have a beginning or an end.

However, she was still a little scared and asked, "Professor Su, you won't fire me, will you?"

"Not for now. Okay, hurry back and remember the story I told you!" Su Yu urged.

Zhang Qiu stood up, preparing to leave, when she suddenly noticed the crystal ball on the cabinet by the wall—the one she had given to Su Yu. She exclaimed, "What a beautiful crystal ball..."

As soon as Zhang Qiu left, Su Yu turned into a crow and followed behind Zhang Qiu. She returned to her dormitory dejectedly and took out the black notebook from her drawer.

Zhang Qiu wanted to chat with her laptop, but the thought of what it was doing made her afraid, so she put the laptop away again.

Then she sat by the window, staring blankly at the sky outside. She didn't know how much time had passed when Professor Su's story came back to her mind again: the portrait! Yes, the portrait!

As if struck by a sudden enlightenment, Zhang Qiu pulled out a piece of parchment, picked up his quill pen, and began to scribble on it.

Unbeknownst to her, Su Yu was standing on a tree branch outside her window, also looking at the parchment in her hand.

Gradually, the image of a person appeared on the parchment. Su Yu, who had transformed into a raven, narrowed his eyes. This person was none other than his old friend, the vampire Dracula.

After finishing the portrait of Dracula, Zhang Qiu turned the parchment over and continued to doodle.

Su Yu was curious, wondering what Zhang Qiu was going to draw next. He looked at it carefully and slowly realized that it should be a map of Hogwarts Castle.

Finally, Zhang Qiu picked up the quill pen and marked two blood-red crosses on the map. The first was the girls' restroom on the second floor, and the second was Su Yu's office.

After finishing these drawings, Zhang Qiu felt a little hungry. She put the finished parchment and the black notebook together and went to the school cafeteria for lunch.

The dormitory was empty. Su Yu spread his wings and flew in, transforming into human form. He opened the drawer, where a black notebook and a newly drawn parchment lay quietly.

Su Yu picked up the parchment but didn't look at the portrait of Dracula. The two had already interacted twice, and Su Yu was sure he wouldn't mistake him. At this moment, he was more interested in the map.

Needless to say, the girls' restroom is the entrance to a secret room, but what does it mean to put an X on your own office?

Was Dracula coming to his office? To kill him? Or to steal something? Su Yu couldn't help but ponder.

Chapter 121 Tom Riddle (Part 2)

Su Yu didn't touch the black notebook with his hands. Instead, he took out a wooden box from the seamless stretch bag. The box was covered with intricate magical runes.

With a wave of his wand, the black notebook flew out of Zhang Qiu's drawer and landed in the wooden box. After closing the lid, Su Yu transformed back into a raven and returned to his office.

Sitting in his office chair, Su Yu stroked the parchment in his hand, pondering the meaning of the cross. Suddenly, he remembered what Zhang Qiu had said before leaving: "What a beautiful crystal ball!"

Su Yu's eyes fell on the crystal ball. To be honest, he had forgotten about it after Zhang Qiu gave it to him. If Zhang Qiu hadn't brought it up again today, he probably would have forgotten who gave it to him.

Su Yu immediately realized that there was definitely something wrong with this thing. If the opponent was Dracula, then his target would most likely be the remains of the bouncy pot in his hand.

He first took down the crystal ball and examined it with his detection equipment. He quickly found an anchor point inside, the anchor point of a door key.

In other words, Dracula could enter Su Yu's office at any time through this crystal ball if he wanted to.

Upon receiving this result, Su Yu broke out in a cold sweat. He had originally thought that with Dumbledore at Hogwarts Castle, no one would dare to lay a hand on him here, but he never expected to be proven wrong so quickly.

This reminded Su Yu of that inhuman joke about the Harry Potter world: Hogwarts is the safest place in the world!

It seems my vigilance wasn't high enough. Su Yu thought for a moment, then picked up the crystal ball and the wooden box containing the notebook, and went to the 8th floor of the castle, to the location of the Room of Requirement.

Then, as instructed, he walked back and forth three times along the white wall opposite the tapestry, thinking to himself: Give me a room for fighting.

The next moment, a large door appeared, and Su Yu pushed it open and entered. Inside was a huge stone hall, somewhat like a fighting arena, but without stands.

Su Yu first set up an isolation and protective magic array in the hall, then conjured a set of tables and chairs, and placed the crystal ball on it. He planned to leave it there temporarily. Since Dracula wanted to come, he would make sure he didn't leave alive.

After dealing with the crystal ball, Su Yu took out the box containing the notebook, opened it on the table, and began scanning and checking it.

Horcruxes are quite different from ordinary alchemical tools. The magical runes on them don't seem to be artificially inscribed, but rather naturally formed by the soul and the object under the influence of dark magic.

Su Yu saw runes for mind control, mind absorption, life absorption, soul nourishment, and some runes he had never seen before.

Following alchemist tradition, Su Yu first recorded the runes before putting on gloves, opening his notebook, and writing: "Hello, I am Su Yu!"

The ink faded, then new ink appeared, and the notebook replied, "Hello, I am Tom Riddle! Where is the other child?"

Su Yu didn't mince words and said directly, "I am her teacher, a professor at Hogwarts. Don't try to lie to me. You might be able to fool a student, but you definitely can't fool me."

Su Yu spoke in a very assertive tone, like a powerful wizard who had confiscated a student's dark magic items and was now confidently looking to uncover the truth.

Tom Riddle remained silent for a long time before saying, "No matter who you are, I am just an alchemical tool, or more accurately, a door key."

Upon seeing this text, Su Yu's lips curled into a smile. Clearly, Voldemort was about to start acting with him.

So Su Yu pretended not to know and asked, "Key? What key?"

The notebook continued to display text: "Salazar Slytherin, one of the founders of Hogwarts and the first head of Slytherin, left a secret room in Hogwarts Castle."

"Inside lies a vast amount of wealth, knowledge, and alchemical tools left behind by Lord Salazar, and I am the key to unlocking this secret chamber."