"So it's only reasonable that someone would want to steal the Philosopher's Stone. Hermione said, "Who wouldn't love something that could make people live forever and make infinite amounts of gold?"

"But why don't you make a few more of such good things?" asked Hermione, a little confused.

"I think it's not that they don't want to do it, it's that they can't. Ryan replied.

"Why? If you can do the first one, what is the difficulty of doing the second after mastering the method? ”

"When I was in the Hogwarts Library, I flipped through a few books on practicing alchemy. Although I can't understand much, I remember one thing very clearly, the core of alchemy is the principle of equivalent exchange. ”

Ryan waited for Hermione to nod her head and then said, "Then think about it, if from the perspective of equivalent exchange, what kind of thing can increase life against the laws of nature and change the nature of matter to make gold?"

Hermione thought for a moment, then suddenly covered her mouth with her hand as if she was frightened.

"You also thought about it, only at the cost of life can there be such a powerful effect. ”

"But...... But. Nicolame was a friend of Professor Dumbledore's, so he wasn't a bad guy. Hermione stammered.

Ryan knew Hermione had misunderstood. "I don't say Nicolame was a murderer, but the time he made the Philosopher's Stone, when the Black Death and smallpox broke out in Paris, where he lived. Given the level of science of that era, infectious diseases caused a large number of deaths. For example, in 1353, when the Black Death broke out, the death rate in Paris was 40 times higher than usual. In 1418, an outbreak of smallpox killed at least 60,000 people in Paris in a month and a half. It is likely that the loss of these lives provided sufficient raw materials for the crafting of the Philosopher's Stone. But then there are very few such opportunities. ”

"I remember there was a paragraph in elementary school history class. Hermione nodded in agreement. "Then we're going to write a letter to Harry now, telling them we've found it. That way he and Ron wouldn't have to worry about it during the Christmas holidays. ”

"I think they've probably forgotten about it. Ryan complained.

In the end, because Hermione had something to do, Ryan ran to Diagon Alley alone and wrote today's discovery into a letter of credit owl and sent it to Harry.

......

As Ryan had expected, Harry didn't use the vacation to look up information. He had a great time with Ron after the holidays and didn't think much of Lemay.

The dormitories were completely at their disposal, and the common room was much less crowded than usual, and they were able to occupy a few more comfortable armchairs by the fire. When they received Ryan's letter, they sat there, eating everything they could poke up with a baking fork—bread, bread, mushrooms—while devised plans that would get Malfoy expelled, and although none of them were likely to be implemented, it was always fun to talk.

"Hey, Harry, there's a letter out there. Ron saw an owl standing outside the window, pecking at the glass window with a letter at its feet.

Harry opened the window, and a gust of wind blew snowflakes in his face. He took the letter, then broke off a small piece of buttered bread from a baking fork and fed it to the owl. After eating the bread, the owl flapped its wings and flew away.

"Who gave it to you?" Ron asked.

Harry tore open the envelope and looked at it, and said to Ron, "Ryan's letter, he said that he and Hermione had found Nicolamay, and that they would tell us when they got back from vacation." ”

"Hey, I told you a long time ago, this kind of thing is better for Ryan and Hermione, two people who like to read. Give it to them. Ron said to Harry as he half-reclined in his armchair.

After that, they completely let go of the matter in their hearts. Ron began teaching Harry the Wizarding Chess, which was identical to Muggle chess, but its pieces were alive, so it felt more like he was commanding an army in battle.

It's just that Harry, who uses other people's chess pieces, is really not as easy as using Ron, who has been handed down by his grandfather and ancestral wizard chess, and these chess pieces are babbling at Harry's chess level, which makes him dizzy.

......

After sending the letter to Harry, Ryan reverted to his boring homework in the last days before Christmas, and then spent his time chatting with his parents, decorating the house, and fixing some of the bad things in the storage room. As he came into contact with more and more mechanical products, Ryan became more and more proficient in the "Winter House Industrial Manual".

The day before Christmas Eve, Ryan even fixed the old typewriter in the corner of the storeroom. This made Mr. Lambert very happy. Because this used to be used by his grandfather and later given to him as a gift for his elementary school graduation.

Lady Sally polished every button and every part of the typewriter and placed it in a display case in the living room as an ornament.

In the afternoon, Ryan decided to go out for a walk, after all, he had been doing his homework for the past few days, so he hadn't been out of the house.

As soon as he walked into the park, he hadn't looked around when suddenly the Wanjie Grocery Store told him that a new customer had come to his door.

Ryan quickly found the public restroom, saw that no one had entered a cubicle and locked the door, and then went to the Wanjie grocery store.

When he got to the shop, Ryan noticed that there was already a customer standing there waiting.

This man was a middle-aged man who was a little fat, and he looked a little cringe. He was wearing a homespun cotton jacket, with a shaved yin and yang head on his head, and a small braid on the back.

When he saw Ryan suddenly appear in the store, he hurriedly knelt down and shouted for help from the gods.

Ryan hurriedly let him go around the counter and pull him to his feet, after all, it was really difficult for a person of his father's age to kneel in front of him and kowtow.

"Well, you must have some help here. If there's a problem, you can tell me quickly. Otherwise, how do I know how to help you. ”

After hearing this, the man knelt down again. But he still stood in Ryan's angry eyes. "My name is Defu, and because my master was framed by traitors, my master and I were exiled to Heilongjiang. Now my wife and my wife have just given birth to a baby, and the cold in the nest where everyone lives is too heavy, and the baby is also sick. I couldn't really hurry up and walk around the yard at night, and then I heard a voice call in the dark, and I came here. Daxian, you must save us. ”

Ryan felt familiar when he heard this, and after carefully recalling, the memory of his previous life as a part of the middle-aged and elderly people born in the 90s woke up.

"Is your master a miracle doctor Xilaile?"

"Huh?" Defoe opened his mouth in surprise. "Immortals also know about my master?"

Ryan waved his hand mysteriously: "They complained when they were drinking with the impermanences, and your master caused them to run away many times. ”

"Is my master okay then?" asked Defoe.

"It's okay, your master has accumulated a lot of merit. All they can do is complain. ”

"I need to think about how I can help you. ”

With that, Ryan sat down behind the counter. Holding his chin in one hand, he began to think. Defu did not dare to come out and stood there cautiously.

After a few minutes, Ryan clapped his hands, "I know what to do." ”