In fact, Zhang Xu wanted to ask Professor McGonagall a question, what would happen if uranium-235 was turned into barium and krypton by transfiguration. However, considering whether Professor McGonagall knew uranium, barium, and krypton, and that she had recently tried to tease Professor McGonagall with dried fish and a cat stick, she was still in an awkward state, so she had to give up the idea of asking Professor McGonagall for advice. Later, Zhang Xu wrote a letter to Zhao Lao for advice on this idea, and Zhao Lao's reply was two sentences: Don't look for death. If you want to die, look for it in the UK.

Ever since Zhang Xu beat Peeves to the point of becoming a ghost again, Filch, the Hogwarts administrator, has shown great kindness to Zhang Xu. Zhang Xu, a person who has received the education of a communist successor for two lifetimes, and who has been soft on the three good students every year in this life, will naturally not be kicked in the head by a troll to deliberately violate the school rules, so there is no contradiction between him and Filch.

In addition, Zhang Xu is a cat who likes to tease, and Mrs. Loris, under Zhang Xu's small dried fish offensive, is already very affectionate with Zhang Xu.

One day after dinner, Zhang Xu, who was returning to the common room, saw Mrs. Loris lying on her stomach in armor in the corridor. After teasing the cat with a few small dried fish for a while, Zhang Xu picked up the cat and sent it back to Filch's office.

After knocking on the door and entering the office, Zhang Xu saw Filch sitting at the desk, staring at a quill on the table.

Now Zhang Xu has a headache when he sees a quill pen, and Zhang Xu says that writing with this kind of pen is simply torture. Fortunately, before Zhang Xu came to the UK, Zhang Xu's father gave Zhang Xu a hero brand fountain pen that the army rewarded him, otherwise he would have to send the trustee to buy a few boxes of water-based pens.

In addition, Zhang Xu is not used to the parchment paper used for homework, but fortunately, a box of A4 paper has been prepared in advance in the treasure bag, which is enough to save and use it for daily use.

"What are you looking at, Mr. Filch?" Zhang Xu asked as he put down the cat.

"Good evening, dear Zhang." Filch replied, "I suspect this quill is a magical item. ”

Zhang Xu thought for a while, took out a fist-sized crystal ball and put it on the table, and pressed the quill under the crystal ball.

This crystal ball has the same function as the jade bi that Zhang Xu's grandfather gave Zhang Xu to test his magic power back then, both of which are used to test the magic of people and objects, as long as it touches the target to be tested.

The reason why it is made into a crystal ball is because the manufacturer intends to open up the European and American markets, and has produced a batch of products for Zhang Xu to bring over for promotion.

Zhang Xu controlled his magic power when he took out the crystal ball, so the crystal ball did not glow.

When the crystal ball is placed on top of the quill, a faint white dot of light appears in the crystal ball, and then the dots of light form a small white ball of light that rotates slowly.

"There is no doubt that this quill is a magical item." Zhang Xu explained to Filch, "When the crystal ball touches an item, it will automatically check for magic fluctuations. The brightness of the light in the crystal ball represents the amount of magic contained in the item, and the speed of the rotation of the ball of light represents the speed of the flow of magic. Moreover, the crystal ball also has a curse alarm function, if the magic item contains a curse, the crystal ball will emit a red light, and it will also emit an alarm sound and vibration. ”

After listening to Zhang Xu's introduction, Filch's eyes staring at the crystal ball were almost shining.

"I can give you this crystal ball."

After Zhang Xu finished speaking, Filch looked up at Zhang Xu with a look of surprise.

"Of course, you can confiscate it from me, as long as you don't deduct points from Ravenclaw." Zhang Xu joked with Filch.

Send samples for promotion, and it is particular who to send the samples to. If you give a crystal ball to another student, the result is a three-minute heat. If it is given to the professor, the crystal ball ends up being shelved. If it is given to Murch Filch, then he will inevitably use the crystal ball to track down the students' contraband, so that the entire school will know about the crystal ball, and it will last until Filch retires.

"Nope! Zhang, of course it will not be confiscated! Filch shouted, "I'll explain it to Professor Dumbledore, and the school will pay for it." ”

"As you wish, Mr. Filch." Zhang Xu replied.

After receiving Zhang Xu's reply, Filch reached out and picked up the crystal ball on the table.

Suddenly, the crystal ball in Filch's hand emitted a blinding white light, causing Filch to let go of his hand and drop the crystal ball to the ground.

Fortunately, the crystal ball has a drop-proof reinforcement design when it is produced, otherwise it will definitely be broken.

Zhang Xu ⊙⊙ face? Looking at Filch, the crystal ball clearly detected Filch's magic on the edge of "powerful" just now.

"In the previous novel, Filch was a squib who couldn't do magic, but now he is clearly a powerful wizard. But during this time, no one had ever heard of Filch using magic, could it be that he was hiding his true strength? It would make sense if he hid his strength, but it didn't make sense for Dumbledore to let a Squib be disciplined in the school. Could it be that he was one of Dumbledore's dark chess? Now that I know this, will I be killed by Dumbledore? It is also possible that Filch hid his strength to become a sweeping monk at Hogwarts because of reasons he experienced in his early years, such as not bullying young people and being poor? So will he be dead? ”

In just a few breaths, Zhang Xu made up the outline of three or four novels that can be millions of words on the water.

"Zhang, this crystal ball is ...... just now" Filch asked Zhang Xu in surprise as he stared at the crystal ball on the ground.

"Mr. Filch, I didn't expect you to be such a powerful wizard." Zhang Xu said as he picked up the crystal ball on the ground, and then injected a magic power into the crystal ball that was average for an ordinary first-year freshman.

Holding the crystal ball with the brightness of the smartphone screen in the future, Zhang Xu handed it to Filch, and said, "Look, your magic is much stronger than mine." ”

Filch reached out his trembling hands and took the crystal ball, which once again glowed blindly.

"But...... Zhang, you need to know...... I...... You've probably heard of ...... I...... I'm actually dumb...... Squib. Filch said nervously and incoherently.

Hearing that Filch didn't say anything like lying, Zhang Xu thought for a moment and suddenly thought of a possibility. So Zhang Xu took out a pair of sunglasses and put them on his face, and then carefully observed the glowing crystal ball in Filch's hand up close.

Filch looked nervously at Zhang Xu, who was carefully observing the crystal ball, and did not dare to come out, for fear of disturbing Zhang Xu.

Soon, Zhang Xu raised his head and handed the sunglasses to Filch, asking him to first observe the light point inside the crystal ball when it was in his hand, and then compare the light point of the crystal ball when he checked other Rubik's Cube items.

It didn't take long for Filch, who had completed Zhang Xu's orders, to regain his composure and sit down at the front of the table again.

"When it was in my hands, the light didn't move. But when checking the magic item and in your hand, the point of light rotates. Filch said to Zhang Xu, "Zhang, is this why I can't use magic?" ”

"For example, magic is like water, and when you cast magic, it flows like water. And your current magic is like an ice cube, you can't mobilize it, and if you don't have enough external stimulation, it's like a hammer can't smash the ice, so you can't cast magic. Zhang Xu said, "The reason for this situation is generally caused by the violent riot of magic power. And you say that you have not been able to use magic since you were a child, and this situation is most likely caused by the intensity of the first magic riot when you were a child. ”

"Is there a way to fix that?" Filch asked nervously.

"There's a solution to the problem, but with Professor Dumbledore's help." Zhang Xu said.

The reason why Filch has a quirky personality is, in Zhang Xu's opinion, the result of long-term discrimination against Squibs in the wizarding world.

In the wizarding world, squibs are considered to be the most severely disabled person. In the wizarding world, a person's lack of hands and feet or even mental problems is not a big problem for wizards, but people without magic are at the bottom of the chain of wizards' contempt.

In the wizarding world that believes in "dragons give birth to dragons and phoenixes" and the highest bloodline, the strong genes of wizards make the descendants of wizards basically wizards. And when a wizard's descendant is a person at the bottom of the chain of contempt, then the wizarding world will think that this wizard will either have a forgiveness on his head or question his lineage. And the latter is the greatest insult to traditional wizards.

Growing up in such an environment, Filch was inevitably discriminated against from all sides, and the long-term discrimination, his envy of wizards and his chagrin with himself, led to his psychological distortion. When he gains a certain amount of power in Hogwarts, he will inevitably redouble his revenge on the young wizards who represent the wizarding community that discriminated against him in the past.

The freshmen who have just entered the school are in the most bearish stage of bear children, and they are naturally rebellious against various rules and regulations. Therefore, the contradiction between the freshman and Filch is inevitable. As the struggle between the two sides intensified over the years without any compromise, and the students' bad comments about Filch had been spreading and fermenting over the years, opposition to Filch became politically correct among the students at Hogwarts, and Filch intensified his fight against the students. The prefect and the president of the student council, who are also the administrators of order, may understand this, but as members of the student class, they cannot stand in opposition to the majority of students.

But if you think about it, Hogwarts has a bunch of bear children with extraordinary powers, and it would be a good choice to have a villain to manage them. Presumably, Dumbledore and the Hogwarts School Board were supportive of this. It can be seen from the fact that little Malfoy, who never left his mouth all day long, was thrown into the Forbidden Forest by Filch, and the old Malfoy did not make any action towards Filch.

After Zhang Xu and Filch met, Zhang Xu never discriminated against Filch. From daily conversations to even a look and expression, Zhang Xu not only did not have any discrimination, but also gave Filch respect as a school administrator. In the past, it seemed that only Dumbledore treated Filch like this at school, so Filch was dead set on Dumbledore. I don't know what the other professors do about Filch (because this chapter is a difficult source written by the author on the train), but from the attitude of Hagrid, who has long flesh and beard and does not have long brains, towards Filch may be able to get a glimpse of the leopard.

It would be serious to say that Filch said to Zhang Xu that "the one who is a confidant dies", but both sides can still treat people with sincerity.