In the last few days of the holiday, Zhang Xu also stayed in the Leaky Cauldron Bar and became neighbors with Harry.

It's just that the environment of the Leaky Cauldron Bar is too bad, which makes Zhang Xu have to spend some time to do a good job in the hygiene of his room.

In the past few days, Zhang Xu didn't do anything else, just checked the textbooks for next semester in the bar room, and spent the rest of his time wandering around Diagon Alley.

Zhang Xu, the textbook for next semester's Muggle Studies class, has been prepared in China and is now being sold at the Blotted Bookstore in Diagon Alley.

Zhang Xu came to the bookstore to buy other textbooks for the third grade.

Zhang Xu walked into the bookstore, and the bookstore manager hurriedly stepped forward.

"Hogwarts?" The bookstore manager asked, "Are you here to buy new books?"

"Yes," Mr. Zhang said.

"Get out of the way, please." The bookstore manager said impatiently, pushing Zhang Xu aside.

The bookstore manager put on a pair of thick gloves, picked up a thick, knotted cane, and walked to the iron cage containing the "Yokai Book of the Yokai".

"Wait a minute, I don't have to buy this book." Zhang Xu said.

"Don't you have to buy it?" The manager's face immediately showed a look of great relief, "Thank God, I've been bitten five times this morning." ”

Suddenly, there was a loud tearing sound in the iron cage, and the two "Youkai Books of Monsters" grabbed the third book and tore it apart together.

Just as the bookstore manager was forcefully opening the books with his cane, Zhang Xu took out a few hay-like things, lit them with his wand and emitted white smoke, and then reached into the cage of "The Monster Book of the Monsters".

As the white smoke drifted in the iron cage, the originally irascible "Monster Book of Monsters" all quieted down, and all of them lay quietly at the bottom of the iron cage.

Then Zhang Xu used a levitation spell to make the white smoke of hay float in the iron cage.

"Thank you so much, sir. You solved a huge problem for us. The bookstore manager said to Zhang Xu very gratefully, "Can you sell me this herb?" ”

"You don't need to sell it." Zhang Xu took out a handful of hay and put it on the counter, "This herb is called Ningshen Grass, and the smoke after it burns has a calming effect. You can glue a slice on the back of each book cover so that the books don't get grumpy. Reflect that these grasses are not worth much, just give me a discount after I buy the book. Also, although this grass is not poisonous and can be eaten, it is best not to put it in your mouth, if you don't believe it, try it. ”

The bookstore manager picked up a piece of Ningshen grass from the counter, put it in his mouth and chewed it, and then ran to the bathroom at the back of the bookstore to rinse his mouth.

Zhang Xu shrugged his shoulders and continued to select the books he could use in the bookstore.

This calming grass is as easy to feed as a wild grass and has a bitter taste that even insects dare not eat it, so Professor Sprout grows it in large quantities around greenhouses and vegetable fields to prevent insects.

In the bookstore, Zhang Xutian selects the books he is interested in.

Suddenly, Zhang Xu saw a bug crawling in the air on a small bookshelf. Zhang Xu stared at it carefully again, and made sure that the insect was crawling on its legs in the air, and its wings did not move.

Zhang Xu stretched out his hand and touched the place where the insects crawled, and found a row of books that could not be seen.

Zhang Xu picked up one of the books, fumbled to open them, and then found that after opening the book, he could see the contents inside, but when he turned it over, he couldn't see anything from the side of the cover.

Zhang Xu took out a bookmark, half of which was sandwiched in the book and half exposed.

Zhang Xu walked to the counter with this strange book and said to the bookstore that had just rinsed his mouth and came back: "This book is invisible, aren't you afraid that someone will take it away without giving money?" ”

Then the bookstore thanked again, because after this batch of "The Invisible Book of Invisibility" came back, they were never found again.

Then the bookstore manager took a stack of bookmarks and learned from Zhang Xu to clip one of each book.

After Zhang Xu finished selecting the books, the bookstore manager directly gave Zhang Xu a seven-fold discount, and the "Invisible Book of Stealth Technique" was given to Zhang Xu.

After settling the account, Zhang Xu saw several sets of "Muggle Encyclopedia" on the bookshelf, which was the textbook for Zhang Xu's Muggle studies class, printed in full color on high-grade coated paper, and the painting style was obviously different from other books in the bookstore.

"How's this set of books selling?" Zhang Xu pointed to the Muggle Encyclopedia and asked the bookstore manager.

"This set of Muggle books from China is very popular." The bookstore manager said, "Never-before-seen paper and printing, the content is very interesting, and the price is very low." This is the textbook for this year's Muggle Studies class at Hogwarts, but many students who don't take it and many adult wizards have purchased it. If I hadn't kept enough of them, many students would have gone to class without textbooks this year. ”

When it comes to making money, the bookstore manager's face is filled with a happy smile.

Hearing that this set of books was very popular, Zhang Xu was relieved.

When the state first compiled this set of books for the Muggle Studies class at Hogwarts, it was not simply compiled as a textbook, but a combination of teaching, fun, scholarship and private goods.

A complete set of five books that objectively tell the history, technology, and social development of the Muggle world over the past millennia.

From the first book used in the third grade, it tells about various common knowledge of Muggle social life, the basic usage and precautions of various electrical appliances. The fifth book, used by the seventh grade, describes the economic, political, legal, and philosophical developments of Muggle society. After learning a set of books, wizards had little problem living in Muggle society.

Just like when Zhang Xu was about to leave, a beautiful figure walked into the bookstore.

The person who came was a little girl who looked to be less than 1.4 meters tall, wearing a pink dress, a loose pink round hat, and a pink umbrella in her hand. Pink dresses, round hats, and umbrellas have bright red ribbons and lace. Under the loose round hat, there is a cute bun face, short silver hair with a slight purple, the pupils of the eyes are a strange red, and when the mouth is opened, a pair of cute little tiger teeth will be revealed.

This cute little girl, if Zhang Xu hadn't been able to beat her, maybe Zhang Xu would have given her prprprpr one day when there was no one around.

"Hello, Professor Scarlett." Zhang Xu greeted the little girl.

Halleyson Scarlett is a professor of mathematics who first arrived at Hogwarts School of Witchcraft and Wizardry last year.

Her Scarlett family took refuge in Hong Kong during Voldemort's rebellion, and then settled in Hong Kong.

A graduate of Mathematics at the University of Hong Kong, Halleson Scarlett was invited by Dumbledore to teach numbers at Hogwarts during Chapter 42.

There are two mysteries about Professor Heathen Scarlett, her age and her strength.

Because Halleyson Scarlett is not tall and very cute, many students think that she is not very old, and the students who asked her age have all been killed by her.

On a Saturday night last year, when Zhang Xu was practicing Defence Against the Dark Arts in the Room of Requirement, Halleyson Scarlet visited the Room of Requirement. As a result, none of the students who were practicing at that time could play, and she let go of all two or three moves on the grounds of extracurricular tutoring, and Zhang Xu, who had the best grades, only lasted more than two minutes under her. Since then, no one has dared to ignore math classes. During the Basilisk incident, she took many of the students to safety, and when she finally dealt with the basilisk, she blocked the basilisk from escaping the door hall by herself on the stairs. The name "Crimson Demon" began to circulate at Hogwarts. Since then, the students' enthusiasm for learning mathematics has been very high.

Because Professor Scarlett is very capable of fighting, and is full of majesty in class, although she is very cute, the students are afraid of her.

Especially Draco Malfoy, Harry Potter was treated the same way Draco Malfoy was treated in Potions class as Draco Malfoy was in math class.

And Draco Malfoy's classmates can't find anyone to reason, because among the Death Eaters sent by Voldemort to chase down the Scarlet family in Hong Kong back then, there was Draco Malfoy's father, Lucius Malfoy.

However, Professor Scarlett has a very good relationship with Zhang Xu. Growing up in Hong Kong, Helletson Scarlett is also half of Zhang Xu's hometown, and both of them like to drink black tea, so they quickly became familiar with each other.

Now Professor Scarlett's dress was designed for her by Zhang Xu for some purpose. The wingless lady is pretty cute.

However, after confirming that the Scarlet family did not have a pair of sisters named Remilia Scarlett and Flandoro Scarlett, Zhang Xu was disappointed for a long time.