Now that the Ravenclaw crown has reached Zhang Xu, it is not difficult for Slytherin's locket to get hold after solving Blake's problem.

As for the Hufflepuff Gold Cup that Bellatrix Lestrange kept in Gringotts, it was not easy to get along with the Dementors, and it would not be easy to ask them to help get a few hairs from her. After her husband and wife's deaths, the inheritance of her family's coffers was in the hands of her sister Narcissa Malfoy or her cousin Sirius Black, both of whom were acquaintances.

If you want to get your hands on the Slytherin locket and the Hufflepuff cup, as well as solve the problem of Harry's soul, this Horcrux Disk Detector will be very useful.

Even if you don't use it to find a Horcrux, you can use it elsewhere. If you modify it, it can even be used as a detector to find a certain creature or even a certain person.

It's just that this plate is a little too large and not very convenient to use.

Putting away the Ravenclaw crown, Zhang Xu asked the waiter, "Can this plate be made smaller?" It would be nice to be able to wear it on your hand like a watch. ”

The waiter thought for a moment and replied, "Yes, but not too far." ”

"It doesn't have to be too far, just a meter or two." Zhang Xu said.

The waiter nodded and said yes.

"I wonder if I can add some other features?" Zhang Xu asked.

"What do you want to add? If it's too complicated, I can't do anything about it. The waiter said.

"You made this crystal plate?" Zhang Xu asked in surprise.

"Yes, I make a lot of the items in this store myself." The other party replied.

"I'm sorry, I thought you were just a waitress in the store." Zhang Xu said.

"Introduce yourself, my name is Tonya Tumannova, you can call me Tonya, the owner of this Tumanova shop." Tonya stretched out her hand to Zhang Xu.

"Nice to meet you, my name is Zhang Xu, a student at Hogwarts School of Witchcraft and Wizardry." Zhang Xu shook hands with Dong Niya.

"So you're Fleur's boyfriend." Tonya said to Zhang Xu with a smile.

Zhang Xu: OvO

"I'm a student at Beauxbatons School of Witchcraft and Wizardry, and I don't think there's anyone in our school who hasn't heard of your name." Tonya said with a smile, "I come back every year for Christmas, so we didn't see each other two years ago. ”

After knowing the identity of the other party, the conversation between the two was much easier.

"Come up and have a cup of tea, and by the way, what features you want to add." Tonya sent an invitation to Zhang Xu.

Zhang Xu followed Dong Nia up to the living room on the second floor of the store, and after letting Zhang Xu sit down, Dong Nia went to the kitchen to prepare refreshments.

Soon, Tonya was ready with black tea with sugar and lemon slices, as well as a plate of cake and a plate of cookies.

Zhang Xu saw a group photo of Tonya's family in the living room, with Tonya and her parents and grandfather.

"Are you the only one in your house?" Zhang Xu asked.

"My parents and grandfather have gone to China." "My grandfather was a professor of physics, and he worked in China for many years 40 years ago. I learned Chinese with him. My father, a professor of mathematics and a Muggle like my grandfather, went to work at a university in China last year. My mother, a witch and a former student of Beauxbatons, heard that magic could also be taught in universities in Huaxia, so she followed my father to Huaxia, and she passed the shop to me. My grandfather went to Huaxia to live with my father and mother in the winter. I go back to St. Petersburg at Christmas, and my parents come back during the summer vacation. ”

"So you spend Christmas all by yourself?" Zhang Xu asked.

"Yes." Tonya said to Zhang Xu, "If you don't mind, I invite you to spend this year's Christmas with me, and it just so happens that we will study your probe together in the next few days." ”

Then Tonya smiled and said to Zhang Xu: "Don't worry, I won't tell Furong." ”

Zhang Xu believes that she has a ghost.

Zhang Xu noticed at the beginning that Tonya directly called Fleur's name, and if the two of them were not familiar, Tonya should call Fleur's surname Delacul.

If Zhang Xu agreed, maybe he would fall into the pit dug by Tonya, and the grape trellis in the backyard would fall.

And the logo of Ravenclaw is an eagle, but it does not mean that Zhang Xu wants to be a whole village eagle soaring on the balcony, and he has no plans to install floor heating and iFi on his balcony.

Then Zhang Xu declined Tonya's invitation on the grounds that he wanted to visit the sick Gabrielle.

Next, Zhang Xu began to discuss with Tonya about making a Horcrux detector.

Zhang Xu naturally didn't tell Tonya that this was for detecting Horcruxes, but only that it was for detecting specific ghosts.

Since Harry had the Twin Socket Soul Fragment in his head, the detector had to block out the signal from Harry first.

Then you have to block out the ghosts in Hogwarts.

In addition, it is necessary to install sound, light and vibration alarm functions.

Since the detector is set in the style of a watch, it simply adds the time, calendar, alarm clock, notepad and other functions of the watch, and usually uses it as a watch.

After determining the functions of the detector, Zhang Xu and Dong Niya studied how to realize the various functions of the detector.

Unlike Hogwarts, which made alchemy an elective in Grades 6 and 7, Beauxbatons has always taken alchemy as a compulsory subject because of Nicol Lemay's presence, and the professor is Nicol Lemay.

In Britain, the main knowledge of alchemy, such as the making of broomsticks, has always been controlled by the various families.

So at the level of alchemy, Beauxbatons students can throw off Hogwarts students by several English Channels.

Fortunately, Zhang Xu has been semi-self-taught alchemy. His knowledge of alchemy comes from two sources, one is the inheritance of Zou Yan, an ancient Chinese alchemist, and the other is Nicol Lemay.

In the past two years, Zhang Xu has written only to Nick Lemay to ask for alchemy knowledge, and slightly more than to Gabrielle.

Because of the same origin, Zhang Xu and Dong Niya did not encounter any big obstacles when discussing.

The first thing the two of them solved was those functions on the watch, which are not a big problem, and both have mature technology available.

The difficulty lies in shielding certain signals, and if this problem is not solved, don't expect to use it in Hogwarts.

In the end, the two reluctantly solved the problem after referring to the principle of the radio.

The day before Christmas Eve, the two finally finished the design work, and the next step was Tonya's hands-on session.

In the past few days, Zhang Xu has also been made big by Tonya, sometimes one minute the two are still discussing whether it is better to use an analog or a digital display time, and the next moment she will ask Zhang Xu, for example, which one is beautiful between her and Furong, if it was her who greeted Zhang Xu at the beginning, Zhang Xu would not find her to be his girlfriend, and if she and Furong fell into the water at the same time, Zhang Xu would save it first.

In the end, as soon as the design work was completed, Zhang Xu ran to France to feed Gabrielle with medicine.