When White River put on the Sorting Hat, he could feel that the hat was desperate to understand him, but under his resistance, the hat could only read the outer layers of the insignificant mind, and finally left the 'man desperate for power, knowledge, and solitude' to Ravenclaw.

After a lengthy sorting ceremony, Shirakawa sang the national anthem in the tune of the 'Kaiser Wilhelm's March', and Ravenclaw was a great place for his needs, as he could find a lot of magical materials in the library, and in some corners, he could also see some dark magic notes left by the little master of death.

On this day, he walked back to his bed with a thick stack of materials, and in fact all the really useful things were recorded in the database, including the dark magic materials of Malfoy Manor.

In the middle of the night, the lights dimmed, and he remembered what he had learned about the dark arts in his mind, and pulled out the journal he hadn't touched since his return from Malfoy Manor.

You know what? I suddenly had a great idea.

White River wrote.

[Hey, hello, you haven't contacted me in a long time?hmm, what is this place?]

Ravenclaw's dormitories.

[What are you doing here?Ravenclaw is flashy, listen to me, I'm the real master of the dark arts, you can ask me any questions!]

I won't believe any of what you write.

[Then why did you open me? You must have a problem, who else in this school can you ask about the Dark Arts without Dumbledore's attention?]

No, dear Mr. Tom Riddle, or Lord Voldemort.

Bai He gave a sinister smile: Although those notes don't contain the contents of Horcruxes and Yin Corpses, they are enough for me to deduce the appearance of those two magics, but you know...... It takes a little bit to study this magic...... That, practice, and I don't have the experiments I need in this academy, so I might as well let you and your Horcruxes be my experiments.

[What are you going to do? No! they're dangerous, and you're going to die without my guidance!]

Not necessarily, it's just a happy one, maybe I'm in a good mood, and the content of the experiment will bring you back to life.

[I?How could you bring me back to life unless you collect all my soul fragments and find my Lord soul?] An inexplicable fear suddenly made the diary tremble.

Don't be mistaken, I just suddenly had a good idea.

Bai He's smile was even more sinister: You see, you have the memories of Tom Riddle before he was sixteen years old, although what makes you exist like consciousness is only a fragment of your soul, but with memory and consciousness, can't you be treated as an independent soul? I will use black magic to refill your soul, and then cut off your connection with the subject—so that you will become a unique individual, and I will make you a body again, ah, what a perfect plan! a perfection that even your body cannot imagine.

When your body discovers you, it must be very upset, he must take you back, otherwise the soul will not be able to stabilize, and you, after gaining new life, will you sacrifice yourself?...... Oh, it's possible to be self-sacrificing, and that's easy, I'll just make you crazy, and let the two of you fight each other, and it's a very fun picture to think about.

[No!you're crazy!You're a real madman!hell!Why did I fall into the hands of a madman!]

Three 'madmen' in a row poured out Tom Riddle's horror, and the diary tried to float again, a faint scream radiating from all sides of the void, and the White River gently closed it.

"Raven, what's going on?" A faint scream that went straight into the soul woke up Mark de Jong, who was on the bed next to him, opened his worried eyes, and he looked at Raven sitting on the bed, and suddenly felt gloomy in the darkness.

"It's just an experimental error. Bai He said lightly.

"It's weird. Mark de Jong thought to himself, this neighbor named Raven White has been so eccentric since the beginning of school, he is reading books and reading books all day long, as if the whole person has gotten into the book, the whole Ravenclaw house is a book maniac, but no one is as crazy as him, and he didn't pay attention to the Weasley brothers who came to him that day.

Maybe there's a problem.

He shook his head and fell asleep, not paying much attention to it, Ravenclaw is an independent college, and this group of children who love to read sit together, it seems ...... Relatively distant.

As time passed, in the fourth month of school, White River was given the magical title of 'Living Bookcase in the Public Reading Room' in Ravenclaw, and everyone found this new student to be very amazing - he remembered the location of all the books in the library and the Ravenclaw library - except for the forbidden area, of course, and even when a student wanted to find a spell, or even a strange knowledge, White River could point out where they were on the shelf.

"Oh my God, how did you do that?" asked Mark de Jong in shock.

"It's nothing, memorize the table of contents of all the books in the first few weeks of school and memorize them, so that you can easily search for them when you look for books later. Bai He explained that he didn't want to expose the fact that he had read all the Hogwarts libraries and the Ravenclaw collection using the intelligent array and the 'Scholar's Touch' spell - after all, the efficiency of reading more than a hundred books a day was too terrifying, which was not something that normal people in this world could do - he couldn't do it himself, so he just wrote down the content and entrusted the Trisolarans to sort it out and summarize it, leaving it for himself to study slowly.

Even that was scary enough to say that, after the 'Living Bookcase in the Public Library', White River was given the honorable title of 'Hogwarts Catalogue', and was rewarded by Professor Flitwick for 20 points for the house.

In the first two weeks of Christmas, his main research was finally completed - how to make a soul-carrying mold out of essentia, and how to fill in the defects of the soul with spiritual matter (the essence of the soul), which only needs a little practice now.

But before he could do that, he needed to kill enough lives so that he could have plenty of essentia and psionic matter for him to experiment with.

This is also an essential daily action for a necromancer or a dark wizard of this world.

In the Ravenclaw dormitory, which was attended by a few people, he checked his equipment—two boxes two inches wide and four inches long were densely coated with blood and some magic patterns drawn from the juice of herbs, which looked terrifying, as if they could drag away a person's soul at a glance, and even weaken or even fall into a coma if they were stared at for a long time.

The blood is the blood of Baihe, which is much stronger than the ordinary dragon's blood, and it also saves him a lot of work.

In order not to make a mistake, he obtained several autographs from the stinky ghost Gilderoy Lockhart, borrowed some books from the forbidden section, and obtained some forbidden knowledge along the way, such as compound potions and unforgivable spells.

The two boxes were thus crafted, and the concealment and stealth required to make such dark magic items took more time than the crafting of the items themselves.

Shirakawa drank the compound potion, transformed into Professor Flitwick, and strode out of the castle with his head held high.

On a dark and windy night, he waited for the effect of the decoction to wear off, and quietly entered the dense forest.

The forest was huge, and Shirakawa carefully navigated the trees, sometimes using detection spells to probe around them, and it was a place for mass killing.

The more complex the soul, the more abundant the spiritual quality, and the more essentia is produced at death, so it is not cost-effective to simply kill the little bugs.

There are quite a few eligible targets in the Forbidden Forest.

However, Bai He didn't know where those creatures inhabited, which made him feel a little unhappy, which meant that he might have to spend the middle of the night finding a target that could kill on a large scale.

But it seemed that the heavens were helping him, and he passed Hagrid's house a few dozen yards away, and the door of the house suddenly opened, and he saw Hagrid come out with something in his hand, and the white dragon heart quietly dropped out.