Hogwarts Kryptonian

The Halloween dinner party broke up in a noisy manner due to the intrusion of the mountain monster. The rumors of the mountain monster also spread by word of mouth in the lounges of various colleges, becoming extremely terrifying.

The fact that Lu Yunkai and Harry killed the mountain monster was also strictly controlled by the teachers and was not leaked to other students. However, the prefects who had been paying attention to the House Cup points found that Gryffindor and Slytherin's points had decreased a bit.

The homecoming weekend that the students of Hogwarts (actually mainly Slytherin) have been looking forward to for two months has arrived.

Although the school is good, for Slytherins who generally come from well-off families, and most of their parents don't work, so they don't have to worry about not having time to take care of their children, no matter how good the dormitory is, it's not as comfortable as home. Especially the first-year students who are enrolling this year want to go home and report their school life to their families.

So when Lu Yunkai, who had taken a long nap at noon the next day, wandered into the auditorium for lunch, he found that he was the only Slytherin first-year student staying in school.

Even Chris could squat on the dining table and talk to Lu Yunkai without any scruples.

"Meow, you slept too much last night, didn't you? I called you several times and you didn't wake up."

"Really? But I didn't sleep very well. I basically kept dreaming." Lu Yunkai looked listless and yawned, "You asked me for something?"

"Meow! Not long after you left last night, I saw Snape stopping Quirrell in the corridor and threatening him for a while." Chris said in an excited tone.

"Can you please stop being curious about this kind of thing!" Lu Yunkai glared at Chris, "Aren't you afraid of getting into trouble?"

"Meow? Are you embarrassed to accuse me? Yesterday you ran to fight with the mountain monster. Isn't it more dangerous than me secretly listening to people talking?" Chrissy looked up with disdain on her face.

"You're the only one who talks a lot of nonsense." Lu Yunkai felt that he couldn't refute this and decided to continue eating.

"I have decided to follow them for a while to see what secrets they have... Meow? Is there an owl looking for you?"

At this moment, an owl flew into the auditorium and dropped a package in front of Lu Yunkai.

"Someone actually sent me something?" Lu Yunkai was stunned.

"Maybe it's a Halloween gift from your friend?"

"How can I send anything to my friends! And is there any need to give gifts for Halloween?" Lu Yun gave Chris a blank look and opened the package with great curiosity.

Inside was a very old notebook. Lu Yunkai took it out and flipped through it, but there was not a single word in it.

Is this someone's prank? Give yourself an old, unused notebook?

[Six Nats, is it for sale? 】

The system also gave an estimate that was so low that it left Lu Yunkai speechless.

At this price, you can only buy a piece of parchment, right? This is a notebook after all!

Forget it, keep it for yourself! Lu Yunkai shook his head helplessly.

"Meow? What is this?" Chris looked ridiculous.

"Who knows! Maybe some guy who likes to tease people teased me?" Lu Yunkai didn't take it seriously. He put the notebook aside and continued to eat lunch.

"Did that old man from Knockturn Alley give it to you?" Chris touched the notebook with his paw suspiciously.

Chris's slightly silly action made Lu Yun laugh. It's rare to see it look like a cat.

Although it doesn't seem to be a cat originally...

After a leisurely lunch, Lu Yunkai met Harry and Ron in the school's front garden.

Lu Yunkai expected that Harry did not come home. After all, he, like himself, was a homeless person, but Ron and his three brothers did not come home either. Lu Yunkai was somewhat surprised.

As far as he knew, Ron's mother didn't need to go to work either. They are not allowed to go home at this time, maybe it is just because there are too many children...

But no matter what, after the "life and death together" the day before, the friendship between Lu Yunkai and the two of them, which had faded somewhat, was strengthened again.

Harry did not forget to thank Lu Yunkai again for Hermione who had returned home, while Ron brought Hermione's complaint: "He didn't even cast the Levitation Curse. I can't believe it." …

However, after Hermione stood in front of the three of them the night before and took all the blame on herself, none of the three of them would mind what this kind-hearted but foul-mouthed girl said.

The three of them chatted together for a while, and then Harry and Ron went to play Quidditch on their broomsticks. Lu Yunkai, who had no talent for flying, declined their invitation and went to the library.

He wanted to check the formula of the explosive corrosive potion he used yesterday, and then try making one himself.

In this way, he sat in the library all afternoon before finally finding the formula in the fifth book he read, the "Encyclopedia of Potions" recommended by the librarian Mrs. Pince.

After copying the recipe, production method, and precautions on the "Halloween gift" he received at noon, Lu Yunkai returned to Slytherin's lounge.

"Well, the venom of the poisonous horned beast, the venom of the cobra, the venom of the Acromantula, and the scales of the fire dragon..." Lu Yunkai opened his notebook, followed the records on it, and began to buy materials from the system one by one.

There was no one in the lounge, so naturally Lu Yunkai no longer had the need to avoid suspicion, so he directly conjured potion bottles out of thin air and placed them on the table.

The materials were not expensive. A total of seven raw materials cost Lu Yunkai four gold galleons, and more than half of them were spent on the venom of the Acromantula.

And when Lu Yun started making it, he finally understood that the reason why this potion could be sold in the system for an almost sky-high price of more than one hundred gold galleons was not because of the material at all, but because of the production process.

Too cumbersome! !

The three venoms need to be heated in three different crucibles, because their respective heating speeds are different, and the dragon scales also need to be accurately divided into two parts. One part is heated on the fire and then ground into powder while it is hot, and the other is The portion must be ground into powder at low temperature...

Lu Yunkai spent a whole afternoon without completing the preprocessing of the raw materials.

However, this also aroused Lu Yunkai's desire to win.

Anyway, there’s nothing else to do during the Halloween holiday, so let’s make some potions!

After dinner, continue. Lu Yunkai sat in his "exclusive seat" in the lounge until late at night.

"...Pour the hot fire dragon scale powder into the crucible, simmer for a minute, then let it stand for half a minute from the fire, then add the dew of the Screaming Rose, and it's done. Well! It's almost! It's almost!"

Lu Yunkai poured a handful of powder into the crucible, stirred it with a stirring stick, and then activated the one-minute timer.

It’s finally done!

While sighing, Lu Yunkai waved the magic wand in his hand.

"Cleaned up."

Cleansing spell, this spell can be said to be the spell Lu Yunkai uses most skillfully now.

After putting away things like the crucible, medicine mortar, and so on, one minute is up. Let it stand away from the fire and add dew.

However.

"Why is the color wrong?"

Lu Yunkai looked at the pool of blue potion in the crucible, a little dazed.

He has made a lot of potions in the past two months. Although the grades have been good and bad, and some have even failed, there has never been a situation where the finished product is completely different from the expected color!

What went wrong?

Lu Yunkai could only turn his attention back to his notes, checking them one by one, recalling whether he had made any mistakes.

I looked at it line by line, but didn't find any problems.

-

Maybe you could try adding a few drops of fire dragon's blood to it?

Suddenly, a row of words appeared on the bottom line of the notebook.

Lu Yunkai was stunned.

Could it be that he has been working continuously for too long and is hallucinating? He rubbed his eyes.

The words are still there.

"...Who is it?" Lu Yun opened his eyes and asked wildly.

But there was no response in the empty lounge.

It was quiet for a while.

"Is this some kind of fucking Halloween trick?" Lu Yunkai closed his notebook and poured the potion in the crucible into a red crystal bottle.

[Unknown pharmaceutical mixture, Wuxico, is it for sale? 】

The shadow in front of him made Lu Yunkai unable to close his open mouth.

Right? ? The potion that I failed to make before will become a first-level potion as long as I pour it into this red crystal bottle!

Unless the recipe I made this time is wrong.

Could it be...

Lu Yunkai remembered that line of words that he didn't know how to appear.

Forget it, I can only sell five Siko's things anyway. If it's damaged, just treat these few gold galleons of raw materials as wasted! !

Lu Yunkai spent a few more coins to exchange three drops of fire dragon's blood from the system and dropped them into the red crystal bottle.

The red to purple fire dragon's blood dripped into the dark blue potion, and the color of the potion quickly turned into a color between dark purple and black.

The color seems right?

Lu Yunkai activated the system again.

[First-level explosive corrosive agent, one hundred and twenty galleons. For sale? 】

It actually works? Is it really just a few drops of fire dragon blood that's missing? ?

Lu Yunkai was stunned.

He was clearly sure that when he copied it from the book, he didn't miss a word! Why is there one missing raw material? ?

More importantly...

Lu Yunkai looked at the notebook he closed.

Why can this notebook supplement this raw material? Is this really just a Halloween joke? ?