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In the year 999 of the Magic Calendar, in the eyes of future generations, this was still an incredibly slow world.

The dawn of the Internet era was just beginning to emerge. The speed of transportation, logistics, and information transfer was still constrained by the physical limitations of the real world. At the same time... it was also the last chance in Erina's eyes for the magical world to seize the dominance of human civilization's progress.

Hogwarts Round-Faced Puffskein Express, this was just a project name to mislead others.

According to Erina's idea, its official name should actually be – SkyNet.

Owl navigation using global positioning systems, the spatial barrier-ignoring teleportation abilities of house-elves. If it were possible to achieve zero-latency information transfer of quantum entangled states, intelligent filtering and processing of vast and disordered data, and instantaneous uploading, downloading, and reconstruction of souls and matter through magic... then it would undoubtedly completely颠覆颠覆 the lifestyle of human civilization as a whole.

And the starting point for all of this was the takeout service launched with the summer special edition of *A Bite of Hogwarts*.

With the start of this year's holidays, the Hogwarts kitchen officially began receiving orders from the entire wizarding world. Any wizarding family that subscribed to *A Bite of Hogwarts* magazine could send a meal order request to Hogwarts.

Of course, due to limited manpower, the number of orders each day was limited. According to the rules set by Erina, wizarding families with Hogwarts students would have priority booking rights. In addition, students who passed the "Defense Against the Dark Arts Test" would receive further priority.

Hogwarts house-elves would guarantee the quality of each dish and ensure that orders were delivered accurately and on time.

Based on her understanding of the Hogwarts kitchen's culinary standards and the dreadful state of British cuisine, Erina was confident that any wizard who had tried Hogwarts food would find it hard to resist the temptation on their taste buds.

Even if the price was a little higher...

But Erina had also specially attached an extremely valuable service – any family whose order amount exceeded 50 Galleons would have one hour of temporary house-elf rental privileges after the food arrived.

During this one hour, Hogwarts house-elves could help the family complete tedious housework, as well as some basic house repairs, vegetable garden and flower garden trimming, and even some basic cooking lessons.

You see, house-elves are a magical species.

Although some wizarding families would teach their children that they were merely servants created by wizards.

But in fact, according to Grindelwald's descriptions and the ancient historical documents collected on Dumbledore's bookshelves, they were once a highly magical intelligent race like goblins.

In ancient wars, the entire house-elf race was completely conquered by ancient wizards, their history was erased, and each one was trained from birth to accept servility, slaves who had to serve their masters for generations. They were not only proficient in various everyday household magics, but also possessed powerful magical abilities that many modern wizards could not even achieve.

Therefore, house-elves generally only appeared in some very old wizarding families.

Era-defining delicious dishes, a service experience card only available to ancient families, even one-on-one cooking lessons, large-cargo delivery services... Erina couldn't imagine what reason wizards would have to refuse besides the high price.

And for those families who were short on money, Hogwarts Round-Faced Puffskein Express also had a low-cost version of the service. Hundreds of student owls and the round-faced puffskeins that had been left behind in the owlery were on standby at any time. Although they might be a bit cold upon arrival and not look very appealing, after unpacking, they only needed to be heated up slightly, and the taste was still quite good.

In fact, orders had been flying to Hogwarts like snowflakes since the first day of the summer holidays.

But the only problem was...

"It's been a whole month since the summer holidays started – and there are thousands of orders every day, right?"

Erina flipped through a small notebook, her smile still present, but every syllable was filled with icy anger.

"According to the reports, Hogwarts has been suffering losses of thousands of Galleons every day. I don't care about the financial losses, but... I hate the feeling of being fooled. Do you understand?"

"B-But... Head Chef, they don't pay..."

The house-elf screamed, clutching the small clothes made from Hogwarts napkins tightly to her body, trembling violently.

Hogwarts' takeout service used a cash-on-delivery model, which meant that each house-elf arrived at the wizards' homes carrying food, waiting for them to finish their meal before collecting the service fee and meal fee.

However, even those young wizards who had earned a considerable amount of Galleons at the end of the semester, upon returning home, mostly "voluntarily" handed over their gold coins under the persuasion of their parents, to be temporarily kept by their parents - Professor Dumbledore's signed letters were accurately sent to the hands of every parent, and all adult wizards made exactly the same decision.

Therefore, apart from a few wizards families who kept their promises, most wizards, when faced with high costs and weak house-elves, would involuntarily find some strange excuses.

For example, they didn't have cash on hand at the moment, and would definitely pay next time after withdrawing from the vault; or the children were ignorant and ordered many unpalatable dishes; or they directly questioned the unreasonable price and refused to pay...

And as house-elves, they had no way to resist or actively use magic to harm other wizards.

"No matter the reason, the losses have already occurred, and someone needs to be punished."

The smile on Erina's face became brighter and brighter as she whispered coldly.

"Which means..."

"No!" The house-elf screamed, her eyes suddenly filled with fear, "Don't take our clothes! Head Chef! We will supervise them, we will find a way! Don't take our clothes! We can't go anywhere except Hogwarts..."

"Don't panic, I'm not blaming you, I'm just marveling at the wonders of human nature."

Erina shook her head gently, turned her head to look at Dumbledore sitting beside her.

"I think you understand now what I said before, the risks that may exist with outdated cash transactions and an unordered market. Greed can never be extinguished, and these will not change because of the scarcity or abundance of materials - if traditional social models remain unchanged while material and knowledge are advancing, then it will only lead to greater disasters."

"In fact, a complete and sound society needs to give everyone enough freedom and privacy, and also needs a clear and concise statistical control ability for the whole. I have to say, the Ministry of Magic is not doing well in this area."

"Fortunately, Hogwarts now has all the pieces to fill this gap..."

Erina paused, drawing out her tone, and slowly said in a low voice.

"The only question is, I'm not sure if the Headmaster of Hogwarts agrees, after all, a month ago, he opposed the plan I proposed and suggested putting it on hold for a month to see the actual feedback from the wizarding world before making a decision."

"...So, this was also part of your plan? More than seventy thousand Galleons, Merlin..."

Dumbledore looked at the report of huge losses in his hand, remained silent for a moment, and rubbed his brow helplessly.

"Let's give it a try, but... let's limit it to within the Hogwarts campus for the time being. Otherwise, I won't be able to deal with Cornelius - as for popularizing it in the wizarding world, let's talk about it when you become Minister of Magic..."

"Perhaps, it won't take that long."

Erina raised her eyebrows and replied meaningfully.

Before Dumbledore could figure out the meaning behind Erina's words, the girl had turned her head again, looked at the house-elf, celestial wizard, and goblins in front of her, and gently cleared her throat.

"It seems that we need to formulate some rules, as well as some more efficient and concise ways to let our customers understand the operating logic of this world. This is also why we are gathered here at this moment."

"This world needs to have a little, tiny change."

Dumbledore's loosening of his position made Erina instantly spirited. She could finally make a move on the chessboard.

Since she entered Hogwarts and found that she had to live in the magical world for a long time, she had been thinking all the time about how to change this world. This was not such a noble ideal, just to make herself more comfortable.

At first, she just wanted to earn some money, or have some self-defense ability.

But with the appearance of Grindelwald and the perfect conquest of Gringotts Wizarding Bank, she had developed new ideas.

Erina scanned the anxious house-elf, the determined wizard, and the excited goblins in front of her, took a light breath, suppressed the excitement in her heart, and said slowly in a calm tone.

"From now on, Gringotts Wizarding Bank will set up a separate department in addition to its normal business, responsible for Hogwarts-related accounting matters. The entire department will be managed by Kurt Mael, with the participation of Hogwarts house-elves."

"As for the first thing, establishing Hogwarts student files and assigning numbers..."

Erina flicked her wand gently, and starlight-like images gradually appeared in the air.

"Name is not a reliable objective standard. We need to give each person a unique code, an identifier that can accurately identify and lock them in all fields - I will call it mid, Magic Identification Number."

Along with Erina's voice, the images in the air gradually converged into her appearance, and below her image, a series of characters were slowly floating in the air, explaining what she wanted to express.

"First of all, the first string of numbers represents the school... 99999, this is Hogwarts."

"Next, is the house... 00 is Slytherin, 01 is Hufflepuff, 02 is Gryffindor, 03 is Ravenclaw - this is sorted by the age of the four founders, and with reference to the meaning represented by each house."

"After the house, September 1st of each year will be used as the dividing line to divide the magical year to which each student who has reached the age of eleven belongs. In other words, it is their entrance magical year. And after the magical year, it is the position on the list at the Sorting Ceremony. This block will be uniformly reserved for three digits."

"Finally, Gringotts Wizarding Bank will randomly set up two numbers... to cope with some special circumstances."

In the world of magic, it is possible for a person to become multiple independent individuals. For example, a certain remnant soul that is now wandering in some corner is quite in line with this phenomenon, so Erina has to reserve a little space in advance.

Without further explaining the meaning of the last two values, Erina smiled slightly and looked at the goblin Douglas.

"After completing the input of all student information, Gringotts can create an exclusive virtual account for each person based on the mid, which will be used to store personal property - this part of the assets will be directly settled by 【Hogcoin】uniformly, and can be withdrawn or deposited into 【Hogcoin】at any time, and can be used for all cashless transactions..."

"The rewards or punishments that Hogwarts students receive at school will also be recorded on this account in the form of numerical changes. I think the Hogwarts house-elves can provide this data. I will sort out a detailed list of daily tasks, weekly tasks, monthly tasks, and academic year tasks later and hand it over to everyone."

"As for Mr. Kurt Mael, I hope you can help Douglas persuade the merchants in Diagon Alley to start using this settlement model, and we can provide some small discounts and financial support to wizards and merchants who use this settlement model. As for those who object, let's see if we can buy their shops?"

"Of course, if their resistance is still quite strong, then buy a shop next to them and fill in the market gap - as for the materials and funds in this regard, the former Soviet light industry and Gringotts will be your backers."

Erina waved her hand, dispersed the images in the air, and asked in a pleasant tone.

"I'm done, now, you can ask questions..."

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Goo ya! Another big chapter! Erina asks for hearts~~~
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