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Taking the Granger family to Gringotts, the Grangers and his wife were frightened by the goblins coming and going in Gringotts. Hermione was eager to touch them, but was stopped by Locke.

After leading the Granger family to the service counter, Locke said: "You can take Hermione's admission letter and hand it over to them, and you can get the corresponding redemption amount."

After hearing this, Mr. Granger quickly rummaged through the bag he was carrying, took out the Hogwarts admission notice and handed it to the goblin in front of him.

"The current exchange ratio is five pounds to one galleons, and students can exchange for two hundred pounds per year." After checking the admission notice, the goblin in front of the service counter said this.

In other words, each student can exchange forty galleons a year, which is barely enough for new students.

Generally speaking, the most expensive items are wands and textbooks. In addition, clothing and some magic props and materials are not expensive for freshmen.

If you want to exchange for more galleons, you need to use gold.

According to Gringotts, the pound sterling is basically useless and needs to be processed separately, so only students will have the corresponding exchange quota.

After the Grangers were finished, Locke took out twenty gold bars and exchanged them for a thousand galleons, planning to buy some needed things later.

Gringotts does not reject gold from anyone who comes with it. Because he exchanged a lot at one time, he upgraded Locke to a major customer and gave Locke a traceless extension wallet.

Traceless extension items are strictly controlled by the Ministry of Magic. Except for a few permitted organizations, private manufacturing and sale are prohibited.

Gringotts' money bag has about three cubic meters of space, and it is not cheap to buy it alone. Gringotts gave it to Locke completely because of his rich style and for the purpose of attracting big business owners. .

After leaving Gringotts, Locke led the Granger family of three to purchase all the school supplies Hermione needed.

During this process, he fully displayed his acting skills and gave detailed guidance and explanations, which soon made him very close to the Granger family.

After buying the last school supplies, the group walked out of the store and it was time to separate.

Hermione clearly showed a look of reluctance and hesitated for a moment, just like her mother said: "Mom, can we invite Mr. Locke to our home?"

Mrs. Granger looked like she had expected it: "Of course, Mr. Locke knows a lot. If you spend more time with him, you can understand and get used to the magical world as quickly as possible."

"Really? That's great!" Hermione cheered excitedly, and then looked at her father. Seeing him nodding, she immediately turned to Locke:

"Hey, Mr. Locke, can you come to our home? I still have a lot of questions to ask you."

"This is my honor. After I finish handling my matters here, I will pay a special visit in the afternoon." Locke responded.

"Then I'll be waiting for you!" Hermione smiled and said to Locke: "It just so happens that you can have dinner at our house. My mother's cooking is delicious.

When you come over in the afternoon, I can show you my collection of fairy tale books and dolls. I also have many, many questions about magic to ask you..."

"Okay." Locke agreed one by one with a smile.

After making an agreement with the Granger family and sending them away, Locke started walking around Diagon Alley.

Diagon Alley is a long and narrow alley, with Gringotts at the end and Knockturn Alley on the other side. The whole area is really not that big.

First he went to Flourish and Blotts Bookstore.

The identity assigned to Locke by the system only gave him some basic information. He now needs to quickly understand the current status of the magic world and at the same time buy some magic books from the Harry Potter world.

These general magic books can be purchased at Flourish and Blotts Bookstore, and they are all for sale.

After arriving at the bookstore, Locke bought a set of all magic-related books with a wave of his hand, more than a hundred books, and also packed the Daily Prophet from the past few years.

After such a purchase, the bookstore directly gave Locke, a major customer, a seamless extendable suitcase so that Locke could pack these things and take them away.

After leaving the bookstore, Locke visited several pharmacies and material stores in the surrounding areas, purchasing a large amount of magic potions and various magic materials. He even exchanged another Galleons for him because he didn't have enough money.

After such a large purchase, Locke became the favorite customer of many stores in Diagon Alley.

After tasting an ice cream from Florin's Cold Drink Shop, Locke came to the wand shop and met Ollivander, an acquaintance he met for the first time in this world.

"Hello, do you need anything?" Ollivander asked when he saw Locke.

"My previous wand was broken and I was going to buy a new one." Locke said.

"No problem." Ollivander nodded: "Please open your arms, I need to measure it."

Unrolling the tape measure, Ollivander measured the length of Locke's arm and said, "I really didn't expect that you could kill a Death Eater in a sneak attack after just two years of graduation."

"I just have better luck." Locke said casually.

"Okay, but you do need to be more careful in the future. Those guys are very vindictive." Ollivander continued to chatter, picked up a piece of paper, and wrote down a few numbers on it.

Then he asked: "If my observation is correct, you are right-handed, right?"

"Yes." Locke nodded.

"I happen to have a more suitable one here." As he said that, Ollivander selected a box from the densely packed 'wand boxes' on the shelf and took out the wand inside.

"This is made of willow wood, unicorn tail feathers."

Locke took the wand and tried to use magic to communicate. It felt very similar to the function of the Lord of the Rings, which allowed him to sense and control magic more clearly and reduce the cost of casting spells.

He casually cast a levitation spell, and the book on the counter next to him floated up and moved with Locke's thoughts.

In terms of effectiveness, the magic wand and the Lord of the Rings are almost the same. The final quality depends on the materials used and the craftsmanship of the maker. In terms of convenience, Locke still thinks that the Lord of the Rings is better.

"Very good, this one is fine." Locke nodded, controlling the magic to put the book back to its original position, ready to buy it back and study it.

"Very good, it seems that you have chosen the right wand, and the wand has chosen the right one for you." Ollivander said with a satisfied smile.

After completing this large purchase and leaving Diagon Alley through the Leaky Cauldron, Locke returned to his residence in London.

If you pay careful attention, you will see that this is not far from Granger's house. It is a villa specially selected by Locke.

After sorting the magic books he bought today, Locke began to read them one by one from the beginning.