HP: After binding to the strongest wizard development system

After Tyr's dormitory was broken into by the werewolf Fenrir Greyback and Tonks was attacked by black magic, many crystal balls were placed in the castle to protect the students. They have not been removed until now and are regarded as Strong guarantee.

The crystal ball is used to monitor whether there is any black magic in the castle, and will send out prompts to alert the professor as soon as possible.

Logically speaking, the breath of black magic is also something that can be detected by crystal balls, but Till and his friends pass by countless crystal balls every day, and none of them indicate anything unusual.

Even during the period when Tyr's aura of dark magic was so strong that even Snape couldn't stand it, the crystal ball never noticed it.

The crystal ball does not operate according to the established rules, and what it represents is very clear - the crystal ball has been tampered with!

When Till realized this, he was reading the dark magic book he had put in the bookcase in the library. Grindelwald had also tampered with the paper. Even if others opened it and looked at it, they would only think it was Very simple historical anecdote.

Till closed his book at once, said a hasty word to Mgina beside him, and trotted outside.

"What's wrong with Till?" Bill had just gone to pick out books. When he came back, he only saw Till's back hurriedly leaving, and asked Mgina doubtfully.

Mgina lowered her voice and replied softly: "I have something to do with Professor Snape, and it is probably some sudden inspiration for potions."

After all, this was not the first time that Teal suddenly wanted to go to Snape. Every time, the excuse was related to potions. Considering that Teal and Snape were both potion masters, this reason was never doubted by anyone.

Bill, however, tapped his finger on the table thoughtfully, making an imperceptible soft sound.

There was some worry in his eyes, but he didn't let Mgina across from him see it. He quickly opened the book and read page by page.

Teal quickly came to Snape's office, and when he opened the office door with the habitual password, he saw several students inside, from several colleges, who were being punished for some mindless operations in Potions class. Snape lectured.

Tier regretted it for a moment, because she was used to using passwords to enter the door directly, and Snape never said anything, which made her feel a little embarrassed now, standing at the door looking a little at a loss.

It was obvious that she had only stopped knocking on Snape's office door recently, but something unexpected happened today.

"Sit down." Snape glanced at Teal freely, blurted out two words, and then continued to scold the students who looked curious in front of him. This made the students immediately calm down and listen with peace of mind. training.

Teal circumvented these students, sat down on a chair by the fireplace, and opened the book pretending to have his own business. In fact, he would hear a few words of Snape's words from time to time.

In fact, Snape's lecture was not just because he disliked these students. After all, there was a Slytherin among them who he always favored. They didn't listen carefully in Potions class, and a small mistake could cause the crucible to explode.

The financial loss caused by the cauldron explosion was nothing. Snape was most annoyed when students had accidents in his class. The students in front of me are all students who have been more or less on the verge of explosion in the past few days.

If you don't give them a lesson that will be remembered deeply, I'm afraid they won't take it to heart in the future!

Till felt that Snape's training was reasonable, and Snape became more energetic and confident with the training. In the end, Till couldn't help but lower his head, feeling that he, as an observer, could hardly bear it.

"Professor, I have a few questions to ask you. Can you please help me answer them?" Seeing that one of the junior students was about to cry with red eyes, Till took advantage of Snape to drink water. While taking a breath, he quickly opened his mouth to help them out.

Teal dared to believe that if she had not interrupted, Snape would have regained his fighting strength soon after drinking water to calm down for a while.

Snape first glanced at the helpless students in front of him, then followed the steps that Till handed him and waved his hand casually: "Go out and come here for solitary confinement every Wednesday and Friday night!"

"Yes, Professor." Several students responded sparsely, not because they disrespected Snape, but because they had been trained to the point where they were almost in a trance.

They were all children born into wizarding families. Although they had heard about how scary Snape was before entering school, no one told them how scary it was!

The students left the dark underground office one after another. Thiel suddenly felt that the office was much emptier. It seemed that after those students left, the heat in the office was also taken away.

But now, although the weather is gradually cooling down, Tier is sitting by the burning fireplace. He does not feel cold all over his body. Instead, he rolls up his sleeves with some warmth.

The flames in the fireplace gave off some bitter medicinal aroma, and Teal could easily smell the potion ingredients. You don't need to guess to know that the raw materials for burning in this fireplace, in addition to large sticks of wood, are probably also the potion leftovers that Teal had seen before.

The students who were about to be disciplined were sent away by Teal's reasons. Snape straightened his robes and looked at Teal: "What's the problem?"

Snape really thought that Teal came to him to ask questions. After all, Teal came to his office mostly to ask questions. He even started to tidy up a corner of the table, asking Thiel to put his notebook on it later.

However, Thiel shook his head at him with a serious face: "Professor, I suspect there may be something wrong with the crystal ball in the school."

"You know, I used to walk under the surveillance of a crystal ball every day." Tier frowned slightly, "I suspect..."

"Do you suspect that Professor Dumbledore already knows about your situation?" Snape took a heavy breath, but thinking about it carefully, Professor Dumbledore never showed anything strange.

If Professor Dumbledore really found out that Teal was learning dark magic, it would be impossible not to find Teal - he had always had high expectations for Teal, and dark magic was so dangerous.

"No, I suspect there is something wrong with the crystal balls. Someone has tampered with them." Till lowered her voice. This was what her intuition told her.

Snape just shook his head: "It's impossible for everyone to have a problem."

Till's movement trajectory in the castle is not fixed. He will face at least a dozen crystal balls every day. If they are all malfunctioning...

Till knew that Snape, whose expression suddenly changed, had also thought of this, and said in a slightly dangerous tone: "I'm afraid there will be a problem before these crystal balls enter Hogwarts."

"You go back first." Snape nodded to Teal, indicating that he understood. Teal was convinced and walked towards the office door holding his book.

But Snape obviously suddenly had a question: "Why did Miss Emery not choose to find Professor Dumbledore when she realized this, but came to me?"

Tier's footsteps stopped, and his hand on the door handle tightened slightly.