Save the world from Hogwarts

"I want to take a lot of photos and show them to my dad." Colin Creevey took a deep breath. "I never knew I could do magic until I received the letter from Hogwarts. My Dad doesn’t believe it either. If he could see the photo I sent him, I think he would feel more at ease. If only there was a photo of you."

He looked at Lin Zhen with a begging look on his face: "Maybe I can find someone to take a photo of us, if possible."

Lin Zhen smiled and nodded. The child seemed to love his family very much.

Colin Creevey jumped up happily: "Then, after that, can you sign the photo?"

"Signed" Draco appeared from a corner, the big Goyle and Crabbe stood beside him fiercely, "Harry, are you sending signed photos? How about giving me one too?"

Colin Creevey visibly shrank when he saw Gower and the others.

"Why do you want a photo?" Lin Zhen glanced sideways at Draco who was smiling, "Can't you see me anytime you want to see me?"

With that said, Lin Zhen smiled and motioned to the trembling Colin Creevey to stand beside her, and handed the camera to Draco: "Come, take a picture for us."

Draco pouted, took the camera, and clicked the shutter on them casually a few times.

"Okay." Draco put the camera into Colin Creevey's arms. Without looking at the excited child, whose face was red, he grabbed the sleeves of Lin Zhen's robe, pulled Lin Zhen away, and Don't forget to turn around and motion for Goyle and Crabbe to follow.

"Why are you so popular all of a sudden?" Draco said depressedly, "Hasn't anyone seen me, the handsome heir of the Malfoy family?"

Lin Zhen smiled fondly. She felt that since the time in Diagon Alley, this child had felt unhappy because she was not as popular as him.

"I think everyone has seen it," Lin Zhen said while holding back a smile, "It's just that you are too noble and no one dares to disturb you. But I seem to be within reach."

On Wednesday night, Lin Zhen came to Snape's office as usual.

"It looks like you had a good summer vacation." Medusa walked around the door and looked at Lin Zhen up and down. "You seem to have grown taller."

"Really?" Lin Zhen was a little happy, "You seem to be having a good time too."

"Hehe," Medusa covered her mouth and smiled secretly, "I found something fun."

Medusa opened the door to the office and Lin Zhen walked in.

For the rare occasion, Snape was not sitting at his desk grading homework, but standing in front of the console tinkering with something.

"Close the door," Snape said without looking back, continuing to do what he was doing, "Come here and help."

Lin Zhen obediently closed the door, came to Snape's side and began to fight.

"What are you studying?" Lin Zhen handed the bottle containing toad mucus to Snape.

Snape reached out and took it: "If your brain has not deteriorated over the summer vacation, you should remember that you gave me a project when you left my house."

"Well." Lin Zhen thought for a moment and remembered that she had given Snape the Muggle medicine. "You don't have to rush, Severus. You can take your time."

Snape ignored him and continued working.

"Okay," Lin Zhen saw that Snape ignored him, "Where are we now?"

Snape poured two drops of toad mucus into the cauldron, stirred the potion clockwise, bent down and sniffed it, and then said: "Perhaps it is easier to turn it into a powder than to make it into pills. I am trying to concentrate the potion. "

"Maybe we can try the distillation method." Lin Zhen observed the changes in the potion in the crucible with interest.

This is a pot of common cold potion that is thicker than normal cold potion.Lin Zhen made a rough estimate. Most common cold medicines are 250 ml in one bottle. After boiling this pot, it will be about 120 ml in one bottle, which is indeed a bit more concentrated.

"Distillation" Snape added another porcupine quill to the cauldron.

"A Muggle separation process." Lin Zhen thought for a while and said, "Muggles operate based on the boiling points of solids and liquids in the mixed solution."

Lin Zhen glanced at the crucible: "As for potions, they are also mixed solutions. Well, it seems that a comparative study of Muggle science and our magic must be put on the agenda."

While Lin Zhen was handing materials to Snape, she was meditating on the feasibility of combining magic and technology.

"Tell me more about it," Snape said suddenly.

"Yeah" Lin Zhen didn't react, "What did you say?"

Snape frowned: "Distillation."

"What I said may not be easy to understand without actual operation." Lin Zhen touched her nose and called the house elf to get a bag of salt and a basin of water.

Lin Zhen poured water into the idle crucible: "We all know that liquid will boil when it reaches a certain temperature."

"This is the temperature at which liquid boils," Lin Zhen lit a fire under the crucible and continued, "Muggles call it the boiling point."

Snape watched Lin Zhen pour half a bag of salt into the water.

"Now, I pour the salt into the water," Lin Zhen explained while pouring, "the salt will slowly dissolve in the water."

Lin Zhen casually picked up the stirring rod on the operating table, put it into the crucible and stirred it: "Muggles also specifically studied the speed of dissolution time, and classified both dissolution and distillation into the research category of thermodynamics."

"That sounds," said Snape hesitantly, "like it would be interesting."

Lin Zhen grinned at him: "If you want to know more about it, I can give you some books to study first."

Snape's eyes lit up and he nodded invisibly.

Lin Zhen tilted her head and looked at Snape, feeling that Snape's slightly raised corners of his mouth just now seemed like he was smiling.

Severus really rarely smiles, Lin Zhen thought, while demonstrating the distillation process to Snape. In the absence of instruments, he could only do a simple distillation demonstration.

Snape bottled the cold medicine brewed in the cauldron, then sat on the sofa, staring at the fireplace with a thoughtful look on his face.

Lin Zhen cleaned up the workbench, set up the crucible again, and began to brew the first pot of potion this semester.

Early the next morning, Xiren brought Lin Zhen the Daily Prophet and The Times for breakfast. Lin Zhen only subscribed to the Times when he discovered during the summer vacation that as long as he left the Muggle world, he could not receive information from the Muggle world. of.At least this would ensure that he would not lose his understanding of the changes in the Muggle world because he had been away from it for too long.

The Daily Prophet is full of trivial matters. There is no follow-up report on the Lestranges' escape from prison. What is the Ministry of Magic doing?

Lin Zhen quite suspected that the Ministry of Magic had actually concealed some possible crises in previous newspapers.

He sighed and put the Daily Prophet aside.At this time, the blond school girl who looked erratic sat down next to him.