Save the world from Hogwarts

"Malfoy." Mr. Weasley looked at Lucius like a hedgehog with barbs.

"I heard that my brother has been very busy with work recently," Lucius said lazily. "There are so many checks, have they paid you overtime?"

"Anyway, don't let me catch you with your pigtails," Mr. Weasley said angrily.

Lucius glanced at him contemptuously and said nothing.

"Why don't you introduce me?" Lin Zhen said to Hermione with a smile.

Only then did Hermione react, grabbing her parents and introducing them to Lucius.

Lucius spoke politely to Mr. and Mrs. Granger, leaving Mr. Weasley aside.

"Does he have some conspiracy?" Mr. Weasley looked at the harmonious relationship between Lucius and Granger and said angrily, "Doesn't he hate Muggles the most?"

Mrs. Weasley glanced at him angrily: "Don't think about chewing something you can't chew. The Malfoy family is not something we can deal with."

Lin Zhen looked at Mrs. Weasley with some surprise. Mrs. Weasley seemed more sensible than Mr. Weasley.

Lin Zhen parted with them at the Leaky Cauldron.

Hermione's family was going home by subway. Mr. Weasley wanted to ask Mr. and Mrs. Granger about the subway several times, but he hesitated and looked at Mrs. Weasley's expression and closed his mouth in embarrassment.

The Weasleys flooed home from the fireplace in the Leaky Cauldron, and Lin Zhen said goodbye to them one by one. The cute little Ginny still blushed when she looked at him.But Lin Zhen felt that her blush now was different from before.

Fred or George quietly stuffed a small bag into his arms: "I think you will like it."

Mrs. Weasley invited him to their home with pity, but Lin Zhen declined politely.Ron hugged him and left from the fireplace.

"Harry" Draco appeared out of nowhere, clutching a brand new broomstick.He flew towards Lin Zhen and hugged him.

Fortunately, there were not many customers in the Leaky Cauldron at this time, otherwise Malfoy's image might have been ruined by Draco.

"Hahahaha" Draco patted Lin Zhen's back hard, "Dad bought me a new broom, the latest model Nimbus 2001"

Is this why you're strangling me until I can't breathe right now?

After finally waiting for Draco to calm down, he let go of Lin Zhen.

"You were unhappy before because you hadn't bought the broom yet." Lin Zhen loosened his collar.

"No." Draco stroked the new broom with eyes obsessed, "I just don't like the red-haired Weasley."

"Well" Lin Zhen was confused, "Don't you and Ron get along pretty well?"

Draco rolled his eyes at Lin Zhen: "That's different."

After saying that, he said happily: "I want to join the Slytherin Quidditch team in the second grade. Dad promised me that if I get selected, he will sponsor the latest Nimbus 2001 for everyone in the entire college team."

He smiled so hard that his eyes narrowed. Lin Zhen touched his hair and encouraged, "I believe you can pass the selection."

September [-]st arrived quickly. Lin Zhen left the Leaky Cauldron and got on the bus to King's Cross Station.The scenery outside the window is flying by, with blue sky, white clouds, rows of houses, and endless traffic.

"what"

Lin Zhen glanced at a pedestrian outside the window. Something was obviously wrong with her state.She looked pale and wanted to vomit.

Lin Zhen wanted to take a closer look, but the bus was already driving away quickly.

King's Cross Station was still so lively. Lin Zhen carefully avoided the flow of people and got into platform nine and three-quarters.He looked around the platform. It seemed that none of his friends had arrived yet.Lin Zhen got on the bus, found an empty private room, and sat down.He looked at the platform through the car window. On the platform, there were several freshmen who looked like they were new to school this year. They were saying goodbye to their families with excitement and a little uneasiness on their faces.

"Swipe"

The door to the private room opened and Draco slipped in.

"You're so early." Draco put away his luggage and sat down next to Lin Zhen.

"You really don't care about your image anymore, Draco." Lin Zhen teased him, "If Lucius sees you like this, you may have to copy the Malfoy family rules again."

"Isn't it because I'm in front of you?" Draco relaxed on his seat, "You can't tell my father, or you will come and copy it for me when the time comes."

"Do your own thing." Lin Zhen looked at the platform again and took out a book. "Hermione is here. I'm afraid Ron will be late."

"What book are you reading this time?" Draco asked, "Genes and genetic engineering, what are these and what are genes?"

"To put it simply, this is the Muggle name for genetic material." Lin Zhen explained, "If you are interested, I can tell you in detail."

Draco nodded happily.

"You guys can give me a good meal." Hermione pulled her luggage tiredly and sat in.

Lin Zhen and Draco helped her put away her luggage. Hermione was lying on the table, looking worried.

"You look tired." Draco looked at her worriedly.

"Something happened when I went out today." Hermione replied weakly, "Do you remember the cocoon-shaped person I mentioned earlier?"

Lin Zhen nodded.

"We met today." Hermione was a little scared. "It's very scary. A living person suddenly spins silk like a bug in front of you and wraps himself up. I'm scared."

Lin Zhen had not paid attention to the news in the Muggle world since she left Uncle Vernon's house.

"Has the cause of this disease been found?" Lin Zhen asked. "I have some suspicion that it is a genetic mutation. I have been reading books about genes recently."

"News reports say that experts haven't researched it yet." Hermione looked more energetic. "I heard my father and his colleagues discussing it, and they seemed to suspect that it was a genetic problem, but I heard that there is currently no good instrument to detect it. Regarding bioengineering, it has only emerged in recent years.”

Draco was confused after hearing this, and looked at Hermione and then Lin Zhen with a blank expression.

"Huh!" Ron hurriedly opened the door to the private room and squeezed in. "Fortunately, I caught up."

At this time, the train whistled "woo woo woo" and began to move slowly.

"Take it easy," Hermione turned to look at him. "If it's a little later, you'll have to find a way to go to Hogwarts on your own."

"Hey," little Ron seemed to sigh, "We went out very early. But you know, my family, George forgot his prank props, Fred didn't take his broom, and Ginny even forgot to bring it. Her textbooks. We had to go home again and again to get them."

Ron sighed again: "What were you talking about just now?"

"We are talking about the strange diseases that have appeared in the Muggle world recently," Hermione said. "That cocoon-shaped man, Harry and I suspect that it is related to genetic mutations."

"Cock sound" Ron scratched his hair, "What is that?"

Hermione had an expression of "Look, I knew it" and explained patiently: "Muggle biologists believe that there is a kind of genetic information in organisms that controls biological traits. They call this genes. Between organisms The reason they look different is because the genes in their bodies are arranged in a different order.”

"What?" Draco frowned, "So from a Muggle perspective, the difference between humans and animals is just the sequence of genes?"

Ron's expression looked like he didn't understand at all.

"To be precise," Hermione said like a scholar, "Humans, animals, plants, and microorganisms are all different forms expressed by different gene sequences."

Draco seemed a little unable to accept it: "We are actually the same as these humble animals and plants, and there are microorganisms that sound very small."

"Wait, wait," Ron rubbed his face, "I don't understand how Muggles came up with these messy things."

Hermione shrugged her shoulders: "Muggle scientists are crazy about studying new things. According to the information I checked, as early as [-], the Austrian biologist Mendel conducted experiments based on plant hybridization. Proposed the law of gene separation and the law of free combination of genes."

What a familiar name Lin Zhen sighed in her heart. In the distant past, he sat in a school classroom and studied "Mendel's Laws" with a group of students. Those with tall stems, those with short stems, those with purple flowers, those with white flowers, The round and wrinkled peas almost made him grow bigger than his head.However, now, he can calmly explain this knowledge to his friends.

Ron rubbed his head manically, rubbing his red hair until it looked like a chicken coop.Draco looked down and thought.

"Then, can this gene explain the difference between Muggles and wizards?" Draco asked.

Hermione raised her eyebrows: "I don't understand either. I heard that in [-] or [-], someone proposed that genetic testing could be used to identify individuals."

"It was invented by our British geneticist A.J. Jeffries in [-]." Lin Zhen added, "With current technology, I am afraid there is no way to detect the difference between Muggles and wizards. But I am sure that if If Muggles with malicious intentions discover the existence of the wizarding world, our situation will be in danger."

"Why?" Ron didn't understand. "We can do magic."

"But we have guns," Hermione said.

"Gun" Draco wondered, "What is a gun?"

"This is it." Lin Zhen took out a small pistol from his robe and placed it on the table.

Lin Zhen got this pistol after drinking an age-enhancing drug during the summer vacation. It took a lot of effort. He felt that he was still very weak. An extra gun would give him an extra safeguard.In this way, if his magic power is used up and his physical strength is exhausted, at least his pistol can buy him some time, whether he is facing Muggles or wizards.

Hermione jumped up in fright: "Harry"

"Wow" Ron and Draco exclaimed in unison.