☞ ( ̄д ̄): "Professor Scarlett has a disease here, and if he is not cured, he will be afraid of it. ”

Zhang Xu pointed to his head and said to Professor McGonagall.

He didn't expect to be embarrassed to meet Scarlett and take Professor McGonagall back to the dormitory to chat today.

Although Professor McGonagall is also a member of the Order of the Phoenix, there are some things that Zhang Xu doesn't know if Lao Deng told her, so he uses an ambiguous answer to fool the matter today.

As for Professor McGonagall's belief or not, Zhang Xu doesn't know.

The next day, Sunday, was a rare day of good weather, and it was rare to have such a windless sunny day in February.

Zhang Xu took a copy of "Dragon and Tiger Mountain Examination Classics and Formations" and a bag of sugar-fried chestnuts to a stone table by the lake to brush up on the questions.

Since the introduction of mathematical knowledge such as planar Cartesian coordinate system, three-dimensional coordinate system, plane geometry and three-dimensional geometry into the study of formations, the layout and research of formations have entered a new era.

"Taking the eye of the array as the origin and setting due north as the positive direction of the Y axis, the coordinate position of each key point in the formation is calculated, the algebraic equation of the movement path of each key point when changing the formation is calculated, and the relationship between it and the effect of the formation is analyzed."

This is a question that Zhang Xu is working on now.

This is also a required question type in the college entrance examination over the years, but the Z-axis is often added to the college entrance examination.

Similar to the Eight Gates Golden Lock Array, which has a total of eight key points of the Closed Gate, the Birth Gate, the Injury Door, the Du Gate, the Jing Gate, the Death Door, the Surprise Door, and the Door Opening, the complex formation of the changing formation, is often used as the finale of the college entrance examination.

For example, last year's college entrance examination question was to set the eye of the Bamen Golden Lock Array on a 30-meter-high hill, and the surrounding mounds ranging from 10 to 20 meters.

The test point of this small question is to calculate the position coordinates of the eight doors in the three-dimensional space, and these eight doors should be set up on the ground when arranging the array, and it is impossible to dig a pit and put it in the pit or build a platform to put it on. Moreover, the position of the eight gates is not directly projected on their two-dimensional coordinates on the ground, and the impact of the terrain height difference must also be calculated.

Just when Zhang Xu was immersed in calculations, someone sat opposite Zhang Xu, and then picked up the sugar fried chestnuts on the table to eat, while watching Zhang Xu answer the question there with interest.

When Zhang Xu finished the question, he raised his head to greet the person opposite.

"Hello, Professor Flitwick."

"I have something to tell you about today." Professor Flitwick said to Zhang Xu, ". LS is ready, and I recommend that you use the wand you bought from Ollivander during the practical exam. Since the wand you normally use is not registered with the Ministry of Magic, I am afraid that the Wizarding Examination Authority will not approve the use of wands that are not registered with the Ministry of Magic in exams. ”

Hearing this, Zhang Xu's face became extremely bad.

Seeing Zhang Xu's bitter gourd face startled Professor Flitwick.

"You can't have been to Ollivander to buy a wand, have you?" Professor Flitwick asked, "If you didn't buy it, I can grant you permission to take time off work in the afternoon to go to Diagon Alley to buy a wand." ”

At this time, there were countless alpacas galloping in Zhang Xu's heart.

All this time, Zhang Xu never told anyone that he had bought a wand from Ollivanders, and Ollivanders never mentioned to anyone that he had sold wands to Zhang Xu.

In addition, when Zhang Xu visited Ollivander's wand shop for the first and last time so far, there was no one else in the store.

So Zhang Xu's purchase of the wand from Ollivander became a secret that only the two of them knew.

₪ Enter the dividing line of memories ₪

It was a noon many years ago, and Zhang Xu, who had come to Diagon Alley for the first time, started a shopping trip after exchanging money from Gringotts.

After spending a moment buying textbooks, crucibles, and school supplies, Zhang Xu slipped to the front of Ollivander's wand shop.

Looking at the shabby signboard above the door of the store, Zhang Xu thought for a while and walked into the store with the idea of buying souvenirs.

As the most famous monopoly in British magic, the wand shop is so low-key that it is very sorry for its social status.

But perhaps it is this low profile that has allowed the Ollivanders family to stand tall in the British wizarding world for so many years.

"Good afternoon, sir." Ollivander walked up to Zhang Xu and greeted him, "Are you here to buy a wand?" ”

Ollivander, who is said to have 103,000 wands in his head and information about his buyer, appears and Zhang Xu looks curiously at the first "celebrity" he encounters after arriving at Diagon Alley.

"You have anything else to sell here besides wands?" Zhang Xu asked curiously.

"Sometimes wizards come to me and want to buy some much-needed raw materials that I can't buy on the market for a while, and that I use to make my wand." Ollivander said to Zhang Xu, "But I never sold those to them, this store only sells wands. ”

Zhang Xu didn't know what to say all of a sudden.

"Are you a new student at Hogwarts this year, sir?" Ollivander asked.

"Yes." Zhang Xu replied, "I'm going to Hogwarts to go to school, so I'm going to buy a wand today." ”

"Do you like to use that hand?" Ollivander asked, pulling out his famous fully automatic tape measure.

After some all-round measurements, Ollivander took several long boxes from the shelves and put them in front of Zhang Xu.

"Chestnut, unicorn hair, thirteen inches, there have been three successive heads of the Wizengamot who have had a chestnut wand with unicorn hair."

As a result, as soon as Zhang Xu picked up the wand, Ollivander withdrew the wand from Zhang Xu's hand.

"It's not for you, I'll look for it."

Ollivander said as he searched the pile of boxes.

"Dogwood wood, dragon's nerves, eleven inches...... Oh, not appropriate. ”

"Hazel...... Still not suitable. ”

"Acacia wood...... Ah, what a picky guest, and it's not suitable. ”

"Black Walnut...... Yes, it really doesn't work for you, so try this cedar one again. ”

As time passed, there were more and more boxes placed next to Ollivander and Zhang Xu, but there was still no wand suitable for Zhang Xu's use.

Zhang Xu even took a standardized wand brought from China to Ollivander for reference, but he just shook his head.

Zhang Xu's brain immediately activated, "Could it be that all kinds of plots that often appear in it to find mysterious items that are awesome and coaxing will happen to me?" Zhang thought.

"Nope! No way! After the failure of a red oak wand, Ollivanders shouted a little hesitantly, "How can there be a wizard who can't find a suitable wand in the Ollivanders family's shop!" ”

Ollivanders' performance startled Zhang Xu, for fear that he would shout "I am ashamed of my ancestors and ancestors", and then crash to his death under the signboard on the door of the store.

"Now there is only one way left, there is no way to exist in this world that can't find the right wand in the Ollivanders family's shop." Ollivanders' bloodshot eyes looked at Zhang Xu and said.

"Uh...... You're not going to kill people, are you? Zhang Xu said cautiously to Ollivanders, and at the same time quietly moved towards the door of the store.

"Hey, that's a good idea." Ollivander said suddenly, "Then there will be no wizard in the world who can't find the right wand with me." ”

At this moment, the idea of getting a hidden SSR wand after a lot of hard work in the traditional routine ran away from Zhang Xu's mind.

If Ollivanders hadn't closed the door in time, Zhang Xu would have shouted "Ollivanders killed someone" and ran out on the street.

It took several minutes for Ollivander to reassure Zhang Xu that he had no intention of killing people before Zhang Xu stepped down from the top of a sturdy shelf.

It wasn't until Zhang Xu sat down on the bench that Ollivanders told him his solution.

Ollivander said, "Sir, sit down on the stool, close your eyes, and slowly sense the position of your wand that is called. ”

After Zhang Xu took a deep breath, his whole body relaxed, and then closed his eyes and entered the concentration mode.

Zhang Xu was no stranger to this method of searching for surrounding magical items after entering the country, and he quickly entered the state.

It didn't take long for Zhang Xu to notice that something in a certain direction seemed to attract his attention, Zhang Xu stretched out his hand in that direction, and then silently recited a spell in his heart that was somewhat similar to the Flying Spell.

Ollivanders saw Zhang Xu, who had his eyes closed, suddenly reaching in the direction of the cabinet at the bottom of the counter, so he walked there.

Just as Ollivanders was about to open the cabinet door, he heard a "bang", as if something had slammed into the door from the cupboard and flew out.

Then there was another "bang", and a long box hit Ollivander's forehead at once.

When Ollivander rubbed his forehead with one hand and walked up to Zhang Xu with a particularly long box in the other, Zhang Xu was a little embarrassed.

"You give it a try." Ollivander handed the box to Zhang Xu and said, "I don't remember that there was such a wand in the cupboard. ”

Zhang Xu took the box and opened it, and then the whole person was stunned.

"Mr. Ollivanders, are you sure this is the right wand for me?" Zhang Xu asked with some uncertainty.

Zhang Xu looked at the rolling pin in the box, which was more than half a meter long and about four centimeters in diameter...... No, it's a wand, and the whole person is not good.

The wand is either slender and delicate, or as domineering as the one in Gandalf's hand that can be used as a stick, or as handsome as the domestic peachwood sword.

But isn't this a wand with a 99.99% synchronization rate with a rolling pin, isn't it really Ollivander's conspiracy?

"Since this wand has chosen you, then it is suitable for you." "Judging from the box, it should have been the work of my ancestors more than 300 years ago. Because it hadn't waited for a suitable wizard for three hundred years, I left it out. ”

"Obviously, you are the owner it has been waiting for for more than three hundred years. Although this wand was made more than 300 years ago, the technology used is not outdated even today, and I can vouch for that with the reputation of the Ollivander family. ”

Ollivander is like a salesman who sells his goods to Zhang Xu.

Hearing Ollivander say this, Zhang Xu almost believed it, because when Zhang Xu picked up the wand from the box, a parchment note fell out.

The parchment note looked very old, and Ollivander picked it up and read it: "When I traveled to the Americas, I found a lot of interesting materials there, so I made this one out of white wood and ptarmigan tail feathers...... This root ......"

Ollivander didn't say anything for a long time, and Zhang Xu unceremoniously stuck his head over, only to see that at the end of that paragraph was written "This cane that can cast magic".

At the end of the note is the signature of an Ollivander family member dated 1630.

"I don't think this ancestor of yours is tall, Mr. Ollivanders." Zhang Xu said while holding the crutch, "I think I still know the words 'magic wand' and 'crutch'. ”

Cold sweat broke out on Ollivander's forehead at a speed that was visible to the naked eye, and if it was rumored that he sold his crutch as a wand to others, the family's thousand-year-old signboard would be smashed into his hands.

If the other party was not a new Hogwarts student, Ollivander might have planned to kill someone.

"It's a wand, sir." Ollivander wiped his cold sweat and said firmly to Zhang Xu, "Although it is somewhat different from other wands in appearance, it is no different from other wands in structure and function. The word 'crutch' was just a joke about its appearance. ”

Listening to Ollivander explain so hard, Zhang Xu didn't want to say anything more, in the end, he just wanted to buy a wand as a souvenir to take home and collect, and what happened today can only be used as a talking point in the future.

So after Ollivander offered the wand for only one Galleon, Zhang Xu decided to buy it. But Ollivander also has a small request, that is, don't talk about today's events.

Fortunately, Zhang Xu came to Diagon Alley half a month in advance, so there were no guests here at Ollivanders one afternoon, otherwise Ollivanders would have cried.

※Back to the dividing line of reality※

It's just that Zhang Xu has been throwing this wand that can roll noodles in the treasure bag for so many years, and has never used it to cast a magic.

Now Professor Flitwick told him that it was best to use that wand during the exam, Zhang Xu didn't know what to say for a while.

Zhang Xu put his hand into the treasure bag and tinkered with it for a while, and finally took out the wand from a corner and placed it in front of Professor Flitsch.

"This is the wand I bought from Ollivander." Zhang Xu said to Professor Flitwick.

Professor Flitwick looked at the wand in a state of bewilderment.

"It can be used as a crutch for me." Professor Flitwick said.

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