I have to say, Sirius Black is really not a smart guy.

Far from having any effect, his actions provoked the wrath of the Ministry of Magic bureaucrats, who strengthened their determination to keep the Dementors behind.

The most important thing is that he has learned the so-called "truth of the cause of death" of his parents, and he has completely fallen into the frenzy of revenge for his parents, and almost as soon as he has time, he runs to Zhang Cheng's office and asks him for all kinds of spell-casting techniques and attack spells.

It didn't take long for his strength to start growing by leaps and bounds, and he was almost on the verge of a tie with Draco.

You must know that the latter was trained a full semester earlier than the former, which shows the level of talent and hard work.

Of course, the price comes with horrific injuries almost every day, and he doesn't go back to bed until he is exhausted, so he has little time to maintain relationships with the other two friends, and his personality becomes more and more gloomy, and he is more and more reluctant to talk to others.

Not to mention Hermione and Ron, even Dumbledore didn't have a good way to change this way.

After all, the hatred of killing parents is not something that can be resolved by talking about it, even in a modern legal society, there will be many people who choose to use the most direct and impulsive way to make the murderer pay for his actions.

"Professor, can you teach me the death curse that can actually kill my enemies?"

At the end of the day's lessons, Harry Potter came to the office alone and stared at Zhang Cheng's eyes tentatively.

"Why do you suddenly ask this?" Zhang Cheng touched his chin and looked at the boy with interest.

He can feel that the other party's emotions, hearts and mental states are at a very dangerous critical point, as long as he crosses over, he will say goodbye to the protagonist of the original book forever and become a new Harry Potter.

"I want revenge! I want to make the enemy who betrayed my parents pay!" Harry didn't try to hide anything, and he didn't intend to hide anything.

As a sensitive boy, he could perceive that the professor in front of him was different from anyone else in the school who thought he was a professor.

As for the difference, he couldn't say for the time being, he just felt that the other party would be willing to help him, instead of forcing himself to give up the idea of revenge like other professors.

"Revenge?" Zhang Cheng shook his head with a smile. "You don't seem to have figured out who your real enemy is, do you?"

"I don't understand! Didn't the newspapers say that Sirius Black betrayed my parents, so they were killed by Voldemort?" Harry asked, frowning and gritting his teeth.

"I'm sorry, I didn't tell you the truth, but I can give you three small pieces of advice. First of all, nothing should be as simple as it seems, and there may be a lot of secrets and secrets hidden behind the scenes that you don't know. Second, never trust newspapers, magazines, or what comes out of someone's mouth, because you can't be sure what is true, what is exaggerated, and what is deliberately said to deceive you. Finally, and most importantly, never be blinded by hatred, even if you're going to kill someone, think about why you want to kill them, and who will get the most benefit once they're dead?"

Although Zhang Cheng did not give a direct answer, there were hints between the lines.

He will not be stupid enough to directly interfere with the behavior of the "savior", but intends to let the other party slowly track it down, knowing that embracing the darkness and becoming the same person as himself.

As for why he did this, the answer is simple: he prefers a doer who wants to achieve his goals at any cost rather than the "messengers of justice" who stand on the moral high ground and criticize others.

"What do you mean...... Sirius Black wasn't the murderer of my parents?!" Harry was clearly not a complete fool, and immediately understood what it meant.

"Hehe, it's up to you to find the answer. I think you should find Blake first and talk to him face-to-face, maybe there's something unexpected. As for the Death Curse, I won't teach you, that would mean breaking the laws of the Ministry of Magic. But I'm a careless person, and occasionally I leave some of the more dangerous spell books on the table, which would be terrible if they were read by the students. ”

With that, Zhang Cheng patted a red-covered notebook on the table, and then pretended to stand up and walk towards the bathroom.

When he passed by the boy, he didn't forget to stretch out three fingers.

Harry suddenly realized that this meant thirty minutes and immediately rushed over to flip through the contents of the red notebook.

I don't know if I don't see it, and I'm shocked when I see it.

It is densely recorded, all of which are high-level magic that can kill and maim people, and even some of them, once released, can kill everyone on the street in an instant.

Alarmed!

Fear!

Shake!

He couldn't imagine how a professor could master so much, so terrifying, and so forbidden lethal magic by the Ministry of Magic.

But after a brief moment of panic, he quickly calmed down, realized that this was a once-in-a-lifetime opportunity, and his eyes widened and his brain raced to record spells one by one.

Half an hour passed in the blink of an eye, and when Zhang Cheng came out of the bathroom, Harry Potter hurriedly closed his notes, bent down and bowed deeply: "Thank you very much, Professor, I swear that I will repay you one day in the future." ”

"No, Potter, I don't need anything in return, as long as you know yourself clearly and don't be taken advantage of, I'm thankful. Zhang Cheng picked up the note, threw it into the fireplace, and let the flames burn it all.

"No one can take advantage of me, and no one can dictate what I should do, what not to do!" Harry Potter assured in no uncertain terms.

In recent days, he has had enough of the persuasion and education from his friends and elders, and he has had enough of being pointed at by others.

This time, he wants to use the blood and death of his enemies to prove that he has grown up, has enough strength, and no longer needs shelter and sympathy.

Seeing the boy leave the office, Zhang Cheng curled the corners of his mouth slightly, and muttered in a voice that he could only hear: "The seeds of darkness have taken root, tell me, dear Headmaster Albus Dumbledore, what will you choose?

Needless to say, there is nothing that makes him happier than tearing off a mask of sanctimonious hypocrisy.

As for whether the entire British wizarding community will be in turmoil and bloodshed, that's none of his business.

Anyway, the fate of mankind in this world is already doomed, that is, to be completely destroyed under the nuclear explosion......