Dumbledore? He knows nothing about MC alchemy.

"Is this your alchemical work?" Dumbledore asked.

"That's about right. This is the integrated version of the magic stance amplification skeleton I made. Of course, it also has some physical attack tools built in." Kaisen said as he continued to use various fine small blocks to do some odd things on the skeleton's spine.

"Is this an exoskeleton?" Dumbledore asked.

Kaisen shook his head. "That thing has to be put on and taken off again. What a hassle."

"Could it be a simple puppet? Like an iron golem?"

Kaisen still shook his head.

"Then what is this?"

"Endoskeleton."

"???" Dumbledore stood up. "Is this the endoskeleton I thought it was?"

"That's about right. Do you know what the world looks like to someone with OCD? If a small black dot appears in a pure white space, it will make the person with OCD feel very uncomfortable. But if it is a space that is extremely chaotic, there will be no such feeling. It's like a mantis knife. Instead of adding two plug-ins to a whole human skeleton, it is better to replace the entire skeleton." Kaisen explained.

"I don't quite agree with your approach." Dumbledore shook his head.

"Emmm...I feel the same way, but if I ask you to help me, will you refuse?" Kaisen said as he took off his coat.

"What else can I do?" Dumbledore sighed and took out his wand.

"Thank you. Actually, you don't need a wand. Just send me to St. Mungo's when the time is right." Kaisen said as he took out the diamond sword and was about to attack himself.

"Let me do it." Dumbledore stopped Kaisen's actions. He just pointed his wand, and the lines drawn on the latter's body with a marker were cut open accurately by magic.

"Oh, thank you so much." Kaisen said as he turned his back and rubbed the magic hole onto the alchemical skeleton with a hissing sound.

Huahuahuahuahuahua....click!

"........And then?" Dumbledore, who witnessed everything but understood nothing, asked in confusion.

"What do you mean by "then"? It's done." Kaisen took out a bottle of healing potion given by Snape from the table beside him, put ice cubes in it, shook it, and drank it all in one gulp.

"Do you know what you looked like?" said Dumbledore.

"What are you thinking about?"

"It's like someone forcibly stuffing a second skeleton into their own body."

Kaisen shrugged. "At least now that I have this skeleton, I don't have to use those tiny cubes to help me cosplay the levitation spell."

"I want you to promise me, Kaisen, that if you continue to perform this dangerous human alchemy in the future, you must tell me, or Severus." Dumbledore advised earnestly, just like many parents facing their adolescent children who have begun to have their own will.

And Kaisen still had the same expression: "Yeah, yeah, okay, no problem, I won't do it next time."

Dumbledore knew that Kaisen hadn't taken any of what he had just said to heart. He just sat down on the sofa helplessly and said, "Lucius Malfoy wrote me a letter. Someone calling himself Vickers has gathered some wizards under the name of Tom, and they plan to cause a big disturbance at this year's Quidditch World Cup."

Kaisen put his clothes back on. "But what good will this do them?"

Dumbledore shook his head. "On the surface, it doesn't seem to be any good. Perhaps it's just a prank, but I don't believe it. I'm more inclined to believe that Tom is trying to take advantage of the situation. What could he possibly be interested in at the Quidditch World Cup?"

"Harry?" Kaysen asked.

"Maybe. Lure the tiger away from the mountain? It's best if none of you leave Harry one day."

Kaisen put an old ice cube into the cup. "That's difficult. You can't let me see innocent people in danger and remain indifferent."

Dumbledore naturally placed the cup in front of him and poured some wine into it: "You can take him with you, just as if it were to let him get in touch with the darkness of the wizarding world in advance."

Kaisen brought the glass to himself again and took a sip, "Don't tell me the Ministry is planning on faking someone's death."

"Oh, I have to be responsible for our ally Mr. Lucius. The more people know about him, the more dangerous it will be. I only told you this news." Dumbledore explained.

"I didn't know you were so particular," Kaisen complained.

"I have always been this kind of person...Do you have confidence?"

Kaisen nodded: ".............If there is."

"........................Aren't you going to show me your skills?"

"Uh..." Kaisen stretched out his arm, and with a click, a mantis blade emerged from his sleeve. "I used Ender Cutter before, but it wasn't very useful against magical beasts with high magic resistance or powerful wizards, so I specially upgraded this."

Dumbledore looked at him in confusion, but he soon reacted and cooperated by taking out a glass from the coffee table and putting a layer of Total Protection on it.

"I thought you would use yourself as a target for me." Kaisen curled his lips and put away the mantis knife, curling his lips.

"Although I am old, I am not that stupid." Dumbledore explained, picked up the wine glass that was cast with the universal protection and threw it towards a random place.

The next moment, a delicate piston mechanical arm suddenly appeared behind Kaisen, equipped with a sharp blade that instantly pierced through the wine glass that was blessed with all kinds of protection.

"...................Originally, that universal protection could remain unmoved even under the burning of the Fiendfyre...................And where did you get this thing?" Dumbledore asked, looking at the mechanical arm behind Kaisen.

"It's always been in my built-in skeleton." Dumbledore walked around behind Kaisen and took a look. Sure enough... there was a big hole in his clothes.

"Huh, this thing does look cool, but it requires too much alchemy... You only have one, right?"

"Actually, not really. I have nine more powerful yet simple robotic arms like this!"

"............."

Chapter 234 Decoration!

To put it bluntly, Sirius was not considered particularly reliable by most adults in the wizarding world. This was, of course, a common problem among Gryffindors.

The difference is that after Gryffindors get married and have a career, or after being beaten up by society, they will gradually restrain their own unruly and sharp edges, like the Weasleys and Lupin, but Sirius is not like that.

Although he was beaten up, it was mainly by the Dementors in Azkaban, not the so-called intrigues and various annoying interpersonal relationships in adult society. As a result, he had more experiences than others, but did not appear to be very mature. Basically, he was still the same as he was before he was imprisoned in Azkaban.

This is also the reason why Mr. and Mrs. Weasley were reluctant to let Ron go to Sirius's house. It was not for any trivial reason, but simply because they were afraid that Sirius's good ideas would cost the lives of several young wizards.

If Harry hadn't really been unwilling, they would have even wanted to snatch Harry's custody from Sirius, but unfortunately, they couldn't, because no matter in the Muggle world or the wizarding world, of course the wizarding world had Dumbledore's endorsement, in short, in both worlds, Harry's custody was firmly held by the Dursleys, although they were not so willing... at least it seemed so.

The other two families did not have as much inner drama as the Weasleys. Although Neville's parents also understood Sirius's character, after all, they had worked together in the Order of the Phoenix and were classmates. What's more, Sirius had cleared his grievances not long ago, so his character was guaranteed.

Well, it has nothing to do with personality.

They had the same idea as everyone else, that is, although they did not think Sirius was very reliable, they had a full understanding of Sirius's magical strength. It could be said that if Sirius's fighting spirit was fully brought into play, in a purely one-on-one situation without a sneak attack from behind, even Voldemort could rush up with his wand and fight him off.

Of course...it's just two moves...or at most ten moves, to exaggerate.

And Hermione's parents... unfortunately, this is the importance of information asymmetry. At least if Hermione's parents had time to subscribe to the Daily Prophet, they would not have been able to distinguish between Sirius and the fugitive criminal Sirius with just a few words from Hermione.

Hermione didn't know what lies she used to deceive the two logical middle-class people, and she and her friends came to the house that Sirius bought on Privet Drive.

"Honestly, I suddenly want to invent a spell that can only destroy the decoration of the house without destroying the house itself... I'm a little tired of dismantling these now..." Sirius swung the hammer and violently smashed a big hole in the stainless steel cabinet that did not meet his aesthetic standards.

"Can't the skinning curse be used on this? I remember those spells are more idealistic." Kaisen complained while using the mechanical arm behind him to frantically destroy all objects that were not the main body of the house and were not living things.

"I... uh... I didn't think much of household magic when I was in school, so I didn't learn much." Sirius said, looking at the little wizards. Ron also looked at him: "You should look at Hermione."

Hermione sighed helplessly, "It's too late to use the Flaying Curse now. The wallpaper and furniture have been smashed into pieces... I can only use a Flaying Curse on each piece."

"Maybe it's because I'm not idealistic enough. In fact, those spells don't have a standard casting effect. The so-called magic is actually more inclined to be arbitrary." Sirius explained.

"So you can't skin someone with just magic, without any spells?" Neville asked curiously.

"Um... oranges are fine."

A simple house demolition plan took the whole morning to complete with the full efforts of two adults and three little wizards. At noon, they ordered some fast food and started eating. Perhaps because they were so hungry, Kaisen took out his mobile phone and ordered a second time ten minutes later.

"By the way...didn't you guys eat before you came this morning?" Sirius asked.

Neville showed an embarrassed expression: "There's nothing we can do. We thought the decoration here was finished. We came here just to eat, and we even left room for others..."

Ron nodded listlessly: "Yeah, now I know what my mother's expression was when I left."

Sirius asked subconsciously: "What expression?"

"Uh... pity, maybe because you're unreliable?" Ron said.

"Yeah. My parents have the same expression." After Neville finished speaking, he looked at Ron and clapped his hands in tacit understanding.

After eating and drinking, Kaisen sat on a toolbox to rest for a while. Suddenly, scaffolding and gauze appeared in his hands. He walked out staggeringly and surrounded the entire house tightly.

By the afternoon, when the young wizards had eaten and rested enough and all left the factory in the best health, Kaisen finally started his official work.

He first had Sirius use the Vanishing Charm to collect the trash in the room, then started with the floor. Square oak planks were quickly laid out like building blocks across the two floors of the house, and then the wallpaper...

"...............What's wrong?" Sirius asked Kaisen who suddenly stopped.

The latter shook his head. He couldn't say that he forgot to bring putty. Pasting the wallpaper directly would make it look uneven. However, as a talented civil engineering senior, he thought of a solution almost instantly.

First, he took out a huge thin wooden board and stood it up so that it was basically the same height and width as the entire wall. Then he spread three pieces of paper rolled up from sugarcane flat on the board and slapped it directly on the wall along with the paper and the board.

"I'm such a fucking genius!" Kaisen praised himself without hesitation.

Then he followed the same method to wallpaper the other walls. Before leaving, he took out a pile of various paints and handed them to the little wizards: "Paint some patterns on the wallpaper, flowers, plants, animals, etc., paint them all, don't be lazy."

Hermione nodded subconsciously, and then she realized that she had found Sirius and asked about the wall area of ​​the house...

"Oh... in terms of wall area, it's probably... over a thousand square meters."

Chapter 235 I have a plan!

late at night......................

The scaffolding and covering cloth outside the house were removed, and in the living room on the first floor of the house, Kaisen sat leisurely on the fabric sofa watching TV.

As for the others, they were still using small brushes and paints to paint patterns on the wallpaper.

"Professor, do you really think this is how you'd like us to paint over a thousand square meters of wallpaper?" Neville's head suddenly popped out from the stairs.

"Well, I designed the floor, wallpaper, furniture, carpets, decorations, even the appliances and the pots in the kitchen. It's only fair for you to paint the wallpaper... And you can ask Sirius for your salary... Remember to ask by the square meter."

Kaisen waved his hand, and the potato chips in the shopping bag in the corner flew into his hands. In the magic force field amplified by the amplified skeleton, the potato chips lined up and flew into Kaisen's mouth.

the next day......................................

Kaisen reappeared at the door of Sirius's house, pushed open the door, and then used magic to put the little wizards into their own rooms one by one... In fact, there was no allocation of rooms. Kaisen just used a rather crude method of one room for boys and one room for girls to put them into their own rooms.

As for Sirius... there's nothing I can do. I forgot to buy bedding yesterday, and now there are only two rooms that can be lived in, one for Hermione and one for the other three little wizards. Adding Sirius in, it's really tight.

After placing the breakfast he had bought on the way to the restaurant on the table, he picked up the paintbrush from the ground and began to complete the wallpaper painting project that the five of them had not finished last night.

noon..........................

As some unknown little wizard sat up in confusion and yawned, a chain reaction woke up the other two people in the house. Then the chain reaction in the room caused Hermione next door and Sirius on the sofa downstairs to sit up from the bed in confusion.