"A lot," Felix said, "The four founders are mentioned in many books I have read, but they are either unclear, contradictory, or only leave a few words, which are completely worthless for reference."

He gave an example, "For example, Salazar Slytherin. Many people are afraid of him and call him a dark wizard...but what is the truth of the matter?"

"The truth?" Ms. Grey asked back, "What truth do you want?"

"Of course, the truth in your eyes." Felix looked at her and said.

The ghost seemed to be lost in memories. She thought for a long time and commented solemnly: "Salazar Slytherin is a very good wizard. He and his wife are very loving..."

Felix: "???"

This is obviously not what he wants to know, but it is a good start after all, so he continued her topic, "There is indeed little information about his wife, but many people have mentioned that Slytherin is ugly and looks like a monkey."

The lady looked at him with a little pride, "That is the side effect of his study of magic. Slytherin's original appearance was extremely outstanding, but as he delved deeper into those... terrible fields, his appearance became more and more terrifying." Felix

suddenly realized that this was the case, and he had a kind of pleasure in solving the mystery of the ages.

And Ms. Grey continued to recall: "He was always surrounded by snakes, wearing black or dark green robes all year round, with a lingering smell of blood, and his eyes became, became very scary."

Felix guessed that Slytherin might have transplanted the blood of some magical creatures.

"——His character became more and more extreme, and his differences with others became greater and greater... More than one quarrel broke out, and even his best friend Gryffindor couldn't stand it. But I must make it clear that there was no fight between them. He just left quietly, on a quiet morning, taking everything with him."

"He also left the Chamber of Secrets." Felix reminded her.

"Maybe, but I have heard about this. Slytherin is not afraid to teach all kinds of cruel black magic, but the other three strongly oppose this. So there are rumors that he secretly took his favorite students to teach these horrible knowledge in a secret place."

So, the Chamber of Secrets was originally used for teaching? Felix thought, and solved another doubt. However, according to his speculation, as the conflict intensified later, Slytherin may have transferred some of his particularly bloody research to the Chamber of Secrets.

Speaking of which, Felix once secretly returned to the Chamber of Secrets and used Harry's Parseltongue pronunciation scroll to carefully check it, but found nothing, only found the pit where the basilisk usually hibernates.

Ms. Grey concluded, "But at least during his time at Hogwarts, he still fulfilled his original promise and used his life to protect the teachers and students of the school and resist various attacks. Unlike the last few hundred years, Slytherin House has completely changed..."

"What attacks do you mean?" Felix caught the point.

She swung lightly, as if she despised Felix's ignorance, but with a little excitement of pointing out the way, she asked back, "You don't think Hogwarts was built safely, do you?"

Felix didn't react much, he just made a "continue" gesture.

Ms. Gray said, "According to today's standards, the vast majority of wizards at that time were dark wizards. They adopted a master-apprentice system, with one big one leading three or five small ones. These people traveled around various villages, found those newcomers with potential, brought them around to train, and served as their servants."

"And the establishment of Hogwarts, especially after the four founders covered the magic of the Pen of Acceptance and the Book of Admission to the British Isles, these wizards suffered a fatal blow - they lost their source of servants forever and completely."

"The Pen of Acceptance, the Book of Admission..." Felix chewed on these two words. He had heard rumors about these two magical creations.

It is said that the name of every little wizard who enrolled can be found in the Book of Admission.

When a child first shows a magical talent, the Pen of Acceptance will try to write down his name; but the standard of the Book of Admission is stricter - only when these children fully demonstrate evidence of their magical powers will their names be included in the Book of Admission.

The sensitivity of the Pen of Acceptance, coupled with the strictness of the Book of Admission, enables them to select qualified students for Hogwarts, and they have never made a mistake in the past thousand years.

"The establishment of a new order is inevitably accompanied by the counterattack of the old forces." Felix sighed, and now he almost understood where Tom's vicious comments about Gryffindor in the diary came from.

The story of a thousand years ago is still going on -

"Some wizards recognized the efforts of the four founders, and they took the initiative to send their children to Hogwarts; but others - those particularly radical dark wizards, they hid in the dark, and when they were out or on vacation, they attacked the professors and students of Hogwarts again and again, and dumped their bodies in front of the Hogwarts Castle." She shuddered.

"This naturally led to a counterattack from Hogwarts, among which Gryffindor's attitude was the most intense. He took up his sword and wand and defeated one after another of the famous dark wizards at the time. He even publicly declared that he was willing to accept challenges from anyone, whether it was by Muggle or wizard means."

Felix was fascinated by what he heard. How could the records on the paper describe that magnificent history?

"What about the other three?"

"They were doing the same thing, but Gryffindor was the most famous. After a few years, some students successfully graduated and spread all over the place, spreading the reputation of Hogwarts to the world, and not many people dared to challenge."

Ms. Grey finished the whole story with pride and reminiscence.

Felix also benefited a lot. He expressed his gratitude sincerely: "Thank you, Ms. Helena Ravenclaw."

"Don't! Call me! This! Name!" The ghost in front of him suddenly said excitedly, and her transparent cheeks seemed not so transparent anymore. Before he could speak, she rushed through the wall and disappeared.

Felix: "..."

At this moment, a low, hoarse voice suddenly appeared, saying: "Don't mention that name, it's her taboo."

Felix turned around, and in front of him was a haggard and very pale ghost, wearing an ancient wizard robe covered with silver bloodstains and a pair of huge shackles.

"Long time no see, Barrow."