"Projection? How can the projection be touched..."
Xifa retorted subconsciously.
Then, he saw Elise looking at him with slightly widened eyes.
"Xifa! This is the magic world!"
...
I'm so stupid, really.
In the magical world, aliens such as the undead that can talk but cannot be touched exist.
What’s wrong with the mere projection having these characteristics?
What? Why does the sound transmission of the undead’s speech not require a medium?
Don't ask, asking is magic, it's magic, it's not scientific!
"You're right, Elise."
After a long time, Xifa calmed down and let out a long sigh.
After all, after decades of living as a Muggle, if you have not learned anything, you will subconsciously use Muggle experience to infer.
This is a very dangerous thing. If the enemy knows his thinking habits, he will use these things that are very different from the magic world and the Muggle world to deal with him.
Touching the white hair on Elise's forehead, Xifa said with a smile.
"Thank you, Elise. I often use Muggle experience to view new things, and every time I need you to correct my perception, okay?"
Elise smiled and nodded, her white hair rubbing against her palms itching.
"Then let's go find Professor Leslie and ask her to find the source with us?"
Seeing Xifa take back his hand and fell into deep thought.
Elise came up with her own idea.
"No!"
Xifa shook his head slightly.
"Instead of looking for the source, we let the professor investigate on his own."
"Why?" Elise was a little confused.
"It's useless for us to do something that the professor can't do anything about. Besides, I have a feeling that the next victim is about to appear."
"Huh? Aren't all the little wizards in the outer courtyard banned?"
"But don't forget, the victim was hung in the corridor early in the morning."
"That is to say..."
"Yes, either someone in the outer courtyard has been replaced, or there is something wrong with our new professor."
"Huh? Why not a student from one of our four major colleges, but Professor Crouch?"
"Because I don't like his suits and ties."
"Huh? You're not jealous that he's handsomer than you, are you?"
"How is that possible? If you give me a few more years to grow up, why should he compare with me?"
...
After some rough and tumble, Xifa suddenly straightened his face and said.
"From today on, you all have to stay with me or work with Professor Leslie. What I really suspect is someone from the four major colleges."
"Then let's..."
"Go to the herb shed and tell Professor Leslie about this. Let her have a headache."
——————
Naturally, the herb greenhouse cannot be placed in Hogwarts Castle.
The little wizard needs to walk out of the castle from the gate and step on the stone path against the wall.
After passing through the lush bushes and going down the steps, you can see the door of the herb shed wrapped in green vegetation.
At this time, Xifa was holding Elise's hand and walking on this path that was at most three people wide.
Suddenly, Xifa stopped.
Elise noticed that Xifa was not nervous or hostile.
Even though she was able to stop, she decided to take a lazy dribble.
"Stop making trouble and listen!"
Xifa shook his body and easily removed Elise's strength, and whispered to Elise.
"Huh? What's there to listen to?"
Elise listened intently and frowned.
She heard no sound except the gentle breeze and the rustling of the leaves.
"I really want to hear it here
Professor Crouch's voice. "
Sifa frowned and pointed toward the bushes.
"Calling God to Guard!"
Elise took out her wand and waved it lightly, and a silver-white bird emerged from the tip of the wand.
"That's too reckless, Elise."
"What are you afraid of? If he reprimands us, it means he has a guilty conscience!"
What you said makes sense...
Xifa was immediately speechless.
"Hey, this is it! They must not know this."
The patron saint seemed to have discovered something. Elise was actually a little excited when she received the picture that the patron saint saw.
"Separate left and right!"
With a touch of Elise's wand, the bushes parted to both sides, revealing a path wide enough for one person. She took Xifa's hand and got into the bushes on the side.
With twists and turns, he drove away countless little lives that wanted to jump on the two intruders.
The front of the two people finally suddenly became clear.
This is a strange tree with a trunk and crown as thick as a tree, like a slender bamboo holding a small green hedgehog.
There are no knots in the trunk, and the bamboo will not grow so short.
Another plant that I have never seen before.
Stopped in front of it.
Xifa stretched out his hand to compare, it was almost the same height as himself.
However, in the magical world, trees with this appearance are not considered weird.
Taking the tree as the center of the circle, the ground with a radius of one meter is filled with soil.
You have to know that as you squeeze through, the branches of various plants are intertwined, and suddenly there is a gap. There must be something unique about it.
"This is?"
"This is a daylily tree."
After letting go of Xifa's hand, Elise walked slowly around the tree.
"This is obviously green, why is it called gold?"
"Green? Green because it's green now."
"What do you mean?" Xifa was a little confused. "Besides, what I heard was Professor Crouch's voice. Why did you bring me to see this sapling?"
"Could it be that this sapling has the ability to record surrounding sounds, and that Crouch was discussing a plan with someone here one night?"
Elise's footsteps stopped.
She raised her head and looked at Xifa with a strange expression.
"I have to say that sometimes, your ability to associate is really exaggerated."
"No way! Am I right?"
"No...not related at all..."
...
"found it!"
After spinning around for several times, Elise finally expressed joy and exclaimed softly.
"What did you find? What is this tree for?"
"Well, technically, it's just a part of the ground above a tree."
"This kind of tree does not rely on fresh air to survive, but on turbid air."
"So, this kind of tree is often used in the ventilation ducts of underground facilities. It helps underground facilities have good ventilation effects."
"Emotions, this is the smoking machine of the wizarding world!"
"What, a smoking machine?" Xifa explained after a while.
Elise nodded, "Yes, it's like the smoking machine you mentioned, but it's an extra-large one."
"Every vent in the entire Hogwarts underground facility is opened by magic."
"As long as the ventilation ducts are connected to the roots of the daylily trees, there is no need to dig the ducts into the ground."
"The vents will be changed every day so that foreign enemies cannot enter Hogwarts Castle through the vents."
Xifa understood that the underground outer walls of Hogwarts Castle were wrapped in the root system of this tree.
Use them to replace fresh air.
"For this tree, just find the spores on it."
"With a gentle press, the pipe will reappear."
"Otherwise, you have to wait for it to absorb
Only the impurities in it can open the pipeline again. "
...
"I have a question, why can the sound at the entrance still come out intact after it has processed the impurities?"
"Because it is a magical plant!"
Elise's answer made Xifa choke to death on the spot.
