The Last Alchemist

Since I have accepted the commission, the next thing to do is to conduct a detailed investigation.

Anne is a serious hunter, and she began to routinely question Hill and Vincent, the two eyewitnesses at the scene.

"What was Adele doing when it happened?"

"Holding a party to show her new wand."

"Party? Who were invited?"

"All members of the Squirrel Club, about 400 people. Most of these people are craftsmen, scholars, and knowledgeable businessmen in the city."

"Oh. What were you two doing when it happened?"

"I was chatting with Vincent at the time. Vincent said he would take me to meet the alchemist's favorite disciple, and I was about to say goodbye to Adele. Then I didn't find Adele, so I asked the servant for directions and learned that Adele had a stomachache and went to the toilet. So I went to the toilet to wait for someone, and the result... the result"

At this point, Hill's eyes were slightly red, and she once again remembered the miserable scene she saw in the toilet. Although she was a little jealous of Adele because of the wand, they have always been good friends. Her friend died tragically in front of her, and she was very sad.

Annie looked at Vincent again: "What about you? Do you have anything to add?"

Vincent thought for a while and said: "I remember when Adele showed the moon wand, people were amazed and many people were envious. I vaguely saw that there was greed in the eyes of several people."

Annie was refreshed: "You mean, this monster is coveting Adele's wand?"

"It's possible. In fact, I don't agree with Adele holding this party. It's too high-profile." Vincent sighed repeatedly.

Annie asked: "Then do you still remember the appearance of those people?"

Vincent shook his head: "I don't remember clearly. I am not a member of the Squirrel Club. I don't know the people at the party, and I didn't care much at the time. Because suddenly seeing a priceless treasure shows that greed is human nature."

Annie nodded in agreement with Vincent's words.

After a moment of silence, Anne turned to Rosen and said, "There is too little information. If I want to find clues, I have to go to the Earl's Mansion in person."

Rosen immediately said, "Let's go together."

Annie waved her hand quickly, "No, I'm just going to investigate the scene. The Earl's Mansion must have been blocked by the security team now. It's inconvenient for two people to go, but I can sneak in and check alone."

Rosen thought about it and nodded in agreement. He instructed, "Take good guys with you. If you feel something is wrong, don't fight hard, come back immediately."

"No problem. I will be back after the investigation. One hour is enough." Anne nodded, nodded to Vincent and Hill, and walked out of the study quickly.

In the study, Vincent and Hill still looked a little uneasy.

Rosen took the red wine and wine glasses from the wooden cabinet behind him, poured a glass for each of them, and half a glass for himself. After taking a sip, he said, "Don't worry, Annie will definitely find clues to the murderer."

The two nodded woodenly, both of them looked absent-minded.

Rosen asked again, "Miss Hill, can I ask a question?"

"Ah?" Hill came back to her senses and nodded, "Ask."

"You mentioned the Squirrel Club many times. What kind of organization is this?" Rosen was very curious about this. In the game, he heard the word Squirrel Club many times, but every time he wanted to learn more, he couldn't find any clues.

Hill smiled awkwardly: "In fact, it's not an organization. It was established not long ago, only half a year. Usually, it's just a group of magic enthusiasts who get together to discuss problems. By the way, they go to the home of a wealthy sponsor to eat and drink."

"For example, Miss Adele?"

"Yes." Hill was even more embarrassed.

"What issues are usually discussed?" Rosen asked seriously.

Hill thought about it and said, "At the beginning, we discussed magic problems, but gradually, the scope began to expand. Now, the members of the Squirrel Club will discuss all kinds of problems. As long as they encounter problems in life, they will bring them up for discussion, hoping to find solutions."

Rosen became more and more curious: "For example?"

Hill thought about it for a while, and just remembered the problem he talked about with Raphael before, so he blurted out: "For example, the problem of natural catenary."

"Natural catenary?" Rosen's eyes lit up. He had heard of similar problems on Earth.

Seeing Rosen's interest, Hill took out the silver necklace hanging around his neck and gestured: "This problem was first raised by Raphael. Raphael specializes in human sculpture and painting. He has a very rigorous personality and knows the distribution of human bones, muscles, and fat very well. As far as I know, he even stole corpses from the cemetery when he was young."

"Interesting." Rosen became very interested.

Many people have done things like stealing corpses during the Renaissance in the West. Some people don't understand and call these people evil necromancers, but in fact, these people just want to understand the structure of the human body.

"Now, Raphael encountered a problem. He found that when he painted the lady, he couldn't accurately draw the shape of the necklace on her neck. For this reason, he put his hope in mathematics and asked many mathematicians for help. Unfortunately, no mathematician can solve this problem."

Rosen nodded repeatedly: "Well~ This is really a real mathematical problem, which is worth studying in depth. But if you want to really solve it, you must have a very deep foundation in mathematics."

Hill agreed: "The mathematician Vicki said the same thing. He thought this problem was very difficult, and he even doubted that it could not be solved mathematically. The best way to accurately draw the catenary is to use a real necklace."

"Haha, interesting, this is also a good way. It's just that you have to make a model every time, which is really troublesome." Rosen laughed.

"Who said it wasn't." Hill agreed, and she didn't expect Rosen to give any answer, because the other party looked too young.

As a result, she just finished speaking, and she heard Rosen say: "Let me try."

"You come?" Hill was stunned.

On the other side, Rosen had picked up a feather pen and wrote and drew on a piece of parchment, and then said nothing.

Hill was stunned. She turned to look at Vincent and whispered, "Is Mr. Rosen proficient in mathematics?"

Vincent was also a little dumbfounded. He didn't know what Rosen was going to do, so he could only say, "Don't forget, Mr. Rosen is the proud disciple of the alchemist master."

Hill was speechless: "Okay. But he will definitely hit a wall. In the Squirrel Club, Vic is a rare smart man. When it comes to mathematical skills, even my mentor admires him very much."

After saying this, less than half an hour later, Rosen stopped writing the feather pen in his hand, raised his head, and handed the parchment scroll in his hand to Hill: "I seem to have found the answer."

In fact, what Hill was talking about was the famous catenary problem in the history of the earth. On Earth, this seemingly insignificant problem stumped a large number of smart people. Leonardo da Vinci and Galileo were both confused. Because in that era, calculus had not yet been developed. Once calculus was developed, the catenary problem was easily solved.

Hill naturally didn't know these stories, and she was shocked: "What did you say?"

"I said, I got the answer." Rosen laughed.

"How is it possible?" Hill stood up, trotted to the desk, took the scroll and started reading. As she read, her face gradually turned red: "Mr. Rosen, you seem to have quoted the very immature concept of 'limit', which doesn't seem very rigorous."

"Well, is that so? You mean the mathematical definition of limit is not clear, right?" Rosen asked.

"Yes." Hill nodded repeatedly.

"From the scroll alone, it is true. But in some of my other notes, I have made a very rigorous definition of limit. Today, time is limited, so I won't expand on it."

"Won't expand on it?" Hill was confused, just like smelling the fragrance of delicious food, seeing the delicious food in front of you, but not being able to eat it, it's just torturing people!

Rosen didn't seem to want to discuss the concept of limit too much. He pointed to the scroll: "Look at the answer. Is it what Raphael wants?"

Hill could only continue to read: "Well~ You also used trigonometric functions. This looks a bit complicated. I can only understand half of it. But judging from the answer alone, this should be what Raphael wants!"

Rosen put the feather pen back into the ink bottle and smiled faintly: "Then this parchment will be given to Raphael. By the way, please tell Vic to stop calling himself a mathematician. Mathematics is not as simple as he thinks."

"." Hill was speechless.

She felt that this young man had a very bad character. Not only did he like to keep people in suspense, but he was also very mean. If Vic heard these sarcastic words he said, it would probably make the sweet-mouthed little bee angry to death.

Just then, the door was knocked, and Anne's voice came from outside the door: "Rosen, I'm back."

"Come in."

The door was pushed open, and Anne walked in solemnly, with a faint smell of blood on her body.

"How is it?" Rosen asked, and Hill and Vincent also looked at her with concern.

"From the clues left at the scene, I am sure it was done by the shadow demon." Annie said.

"Hiss~ It is indeed a monster!" Vincent took a breath.

Hill's face was pale: "How could there be a shadow demon in the city of Nirogard?"

Shadow demons are good at changing various shapes, are extremely intelligent, like to ambush and attack, and have very terrible frontal combat power. They are a very difficult monster. Low-level magicians who encounter them will die without knowing how they died.

Rosen asked: "Are there any follow-up clues?"

Annie nodded: "I traced all the way and found that he finally entered the Blackthorn Villa of Marquis Pétain in the north of the city."

"God, Marquis Pétain? Things are getting more and more complicated!" Vincent shouted.

Unlike Adele, a business noble with a shallow foundation, Marquis Pétain is an old noble with a fiefdom and guards. He has stood in the Kingdom of Cowell for 500 years. His family power is deeply rooted and intertwined. If the murderer is related to Marquis Pétain, then Adele will find it difficult to avenge herself.