Early in the morning, Hermione walked out of the room and was about to train with the mages, but was stopped by Luke at the door.

"Hermione, try this, recognize the master like a communication card."

"Is this a jade bracelet?" Hermione looked at the blue-white bracelet that Luke gave her, which looked very much like jade.

"It's just like jade. It has many materials for making, even harder than ordinary steel. You can tell if you try it." Luke saw Hermione's doubts and explained with a smile.

Hermione pierced her fingertips with an ice needle and dripped a drop of blood on it. The drop of blood was instantly absorbed by the bracelet. Seeing that nothing had changed, she looked at Luke in even more confusion.

She saw Luke's wrist also had a bracelet on his wrist, but the colors were different. As soon as Luke raised his right hand, she felt a little vibrating with his wrist and unconsciously raised his arm to look at the bracelet. At this time, a three-dimensional image appeared on the bracelet.

Hermione looked at the three-dimensional image in disbelief, which was Luke.

"You succeeded? This is definitely a cross-age progress, it's so amazing." She said excitedly.

"Of course, don't you see who I am." Luke looked as if he should.

"The communication bracelet has increased a lot of functions compared to the communication card, 2d mode and 3d mode. If there is not enough content, it can even become the Internet in the magic world. At the beginning of my design, I borrowed the protection network of the three temples. If I wanted to have many functions like the Internet, I needed dozens of magic towers similar to base stations, which could theoretically be realized."

Hermione was very excited to see him speak, but as she said that, she lost her voice, "Did you encounter any problems?"

"It's energy. I haven't seen any magic arrays that can gather and collect energy in space."

Luke showed a proud look again, "But it doesn't matter. He didn't think about building the Internet in the magic world for the time being. Now it's just used for communication, relying solely on personal magic. Moreover, the communication distance of the communication bracelet has been greatly improved. Even the young wizard who has just entered school can communicate at will within the earth."

The communication bracelet still has a lot of room for improvement. The magic he currently masters is still limited, and there may be better solutions in the future.

He introduced in detail to Hermione how to use the communication bracelet. Hermione became more and more impressed by Luke. Although many functions were borrowed from mobile phones, using magic to realize it is not easy.

"Or will it be distributed only to members?"

"Yes, instant messaging is our advantage. It would be awful if Voldemort's people used as a tool for communication."

As for Dumbledore and the professors, he had not considered it well. Although he could contact the professor as soon as possible when he found out the situation, the problem was that the enemy's strength has been enhanced now, and even if he contacted the professor, it would not play a big role.

"You go to train first. I'll go back and replace Anna and Skye with communication bracelets. I'll visit Weasley's house tomorrow, and I promised Mrs. Weasley last year."

"Well, we're leaving when you come back, and we're going to Diagon Alley to buy textbooks."

"The most useless black magic defense textbook..." It may be good to read the novel.

He told Hermione a few days ago that this semester is Professor Lockhart’s dark magic defense class. Since he had not bought Lockhart’s books before, he and Hermione had to buy them this time.

"I think it's good for Gidro Lohart to be a professor," Hermione said happily.

"I don't know if I've been cheated." Luke curled his lips and moved away directly.

The parents and the Granger and his wife were playing in the Harbor for a month before returning to London. Mr. Granger said that they were not yet old and could not be idle so much and come back when they had time.

When Luke returns home, Skye and Anna are also very surprised to see the communication bracelet.

"This is too advanced. Even Stark Industry has not yet achieved this level." Skye said, looking at the three-dimensional image on the bracelet.

"It's been there a few years later, and they just focus on their research."

He still believes in Tony's level very much, and it's not that there is no such thing as now. Wakanda must have mastered the holographic projection.

His father James could only look at him enviously, and he knew that he would definitely not be able to use it. Seeing his father James' expression, Luke thought that he would also develop a communications bracelet that anyone could use in the future.

"Do you need to prepare any gifts when you are visiting tomorrow?" asked his mother Helen.

"I have prepared some Nepalese specialties and some delicious food, which should be fine."

Fred and George made a lot of money this year, but they spent a lot of money to develop new products, and they were also in school, with extremely limited output. Therefore, they have never supplemented their household expenses and brought too many gifts to Weasley's home, which makes them embarrassed.

"Well, you're ready."

The next day, Luke moved directly to the door of Weasley's house. He had been here once when he was delivering rice dumplings.

Fred and George, who were playing in the yard, saw Luke immediately and were very happy to go and say hello.

"Luke, you're here. I thought you were lost." Fred came to Luke and patted him on the shoulder.

"School is about to start. If you don't come, I will definitely be scolded to death by my mother." George said pitifully.

Seeing the two of them looking pitiful, Luke found it very funny.

"Don't you invite me in, are you going to let me stand here and chat with you?" He was not polite at all to the two of them.

"Of course not, mom, see who is coming." Fred shouted loudly before entering the door.

"Who is it?" Mrs. Weasley's voice came from the room.

"You won't tell Mrs. Weasley about my coming." Luke felt that he might have been deceived by the two of them again.

"Of course, we plan to surprise my mom." George said with a smile.

As expected, this time it became a "sudden attack".

Luke followed George and Fred into the house. The first thing he saw was the kitchen, which was small and quite crowded, with a clean wooden table and several chairs in the middle.

This was the first time he had entered the wizard family and looked at the decorations in the house curiously.

There is only one needle on the wall opposite, and there is no number marked. The clock face says "Buy tea", "Feed chickens", "You are going to be late".

The mantel is lined with three layers of books: "Put Magic on Your Cheese", "Magic of Toast", "Creating a Table of Feasts", etc., all of which are culinary magic books. It seems that Mrs. Weasley is also a culinary enthusiast.

"Oh! Oh my God, dear Luke, why are you here today?" Mrs. Weasley was very surprised to see him and the Weasley brothers enter the house.

Mrs. Weasley came to Luke and hugged him.

George and Fred were chuckling from the side.
Chapter completed!