Leaving behind the past and embracing the dark side of human nature is never something that can be achieved overnight, it requires a long-term accumulation and process.

So after the seeds of darkness took root, Anyang did not have much contact with Harry Potter again, let alone try to influence and manipulate his behavior, but handed over the job to Dobby, a house-elf who had undergone a terrible transformation.

Late at night......

The entire Hogwarts students and professors were groggy and asleep, and Harry, with the help of the Invisibility Cloak, quietly slipped into a room full of training dummies.

This is no other place, it is the famous "Room of Request".

Dobby, who had been waiting for a long time, came out of the dark corner, bent down and bowed deeply, saying, "Great Harry Potter, humble servant is honored to serve you. ”

"Less nonsense! I need training! More training!" Harry quickly took off his invisibility cloak and tossed it aside, drawing his wand, his eyes glinting with a cold glow.

"As you wish!" Dobby snapped his fingers as he raised his hand.

Syllable!

Moment!

One of the dummies came to life, slowly transforming into Sirius Black in the newspapers, and raised his wand to shoot a terrible death curse.

"Broken bones!"

"Armor protection!"

Harry was clearly accustomed to this kind of high-intensity magical confrontation, and without thinking about it, he put a protective spell on himself first.

After Zhang Cheng's training, he had long understood that compared to all kinds of powerful attack magic, protection magic was the most important.

Because as long as you still have protective magic on your body, you can be invincible, and then slowly think about how to defeat powerful enemies.

But without a protective spell, even if you are hit by a low-level spell that is not fatal, you may be defeated.

The two of them went back and forth for several minutes, and with a new, more powerful and deadly spell, Harry managed to defeat the dummy and restore it to its original form.

However, he was not much better, his body was soaked with sweat, and his chest was even more violently heaving and panting, obviously a serious overdraft of his magic power.

No way!

Anyway, he's only a teenager this year, and he's still a child who hasn't grown up, and the level of mana stored in his body is simply not comparable to that of an adult wizard.

Especially when casting some powerful spells, it can even cause strong discomfort such as dizziness, nausea, and vomiting.

But for some reason, this condition has become less and less common in recent times, and at the same time, something seems to have taken root in the body.

Undoubtedly, Harry Potter, who was poor in knowledge, didn't know what was going on with him, but he felt that as long as he could make himself stronger and stronger, it didn't seem bad.

After half an hour's rest, he defeated the dummy again, and then put on his invisibility cloak and returned to the Gryffindor common room, unaware of the large beautiful eyes that kept staring at him.

......

Early the next morning, the owner of these eyes broke into the lounge and said with a hesitant expression: "Teach...... I'd like to talk to you, can I?"

"Of course, Miss Granger. Zhang Cheng put down the work at hand, turned around and responded with a smile.

"It's Harry! I noticed that he was sneaking out in the middle of the night, not knowing what he was doing. Hermione cautiously stated what she had observed.

I have to say that the performance of "Savior" in recent times is really a bit worrying, and she even feels that her once familiar friend has become a different person.

"Sneaking out in the middle of the night? It sounds like a lot of rebellious boys have done something like that, and I don't think there's any fuss. Zhang Cheng pretended to think for a few seconds, and immediately shook his head noncommittally.

As one of the key subjects, the boy's physical and psychological transformations are under his supervision, including some interesting reactions generated by the power of creativity.

In fact, since deciding to start a large trial, he has been getting a number of surprising results.

Harry Potter's creative power has brought about the most drastic changes, and driven by hatred and a desperate thirst for power, his magic has grown at an astonishing rate, and at this rate, at most, Luo Ao of the Ministry of Magic will have to stand aside.

Obviously, the power of creativity is something that is susceptible to ** and strong feelings.

As for how it will be affected, Zhang Cheng has not yet summed up the corresponding experience and laws.

Hermione, apparently unaware of what a terrible thing the young professor standing in front of her had done, explained to herself, "He didn't just sneak out, he looked like someone had been in a fight." I felt that he was becoming stranger and stranger, and he was becoming more and more distant from the friends around him. ”

"No, Miss Granger, I think it's a sign of maturity. People always need to have a little bit of their own **, not everything can be taken out to share with friends. Of course, if you're close to Potter to the point where friendship outweighs, I can help you ask him what he thinks. Speaking of this, Zhang Cheng curled the corners of his mouth and showed a smile full of ambiguity and playfulness.

"Huh?!" the girl blushed and hurriedly waved her hand desperately. "No, no, no, you misunderstood, we're just ordinary friends. ”

"Really? I don't think you care about him more than just a friend. Forget it, that's not something I should be concerned about. But what Potter was sneaking out at night for, I still knew. ”

"You know?!"

"Yes, as far as I know, he's out practicing spells alone, so don't worry too much. ”

After teasing the other party a little, Zhang Cheng finally reluctantly gave an answer.

Because he knew that Harry Potter's unusual behavior was not only concerned by these students, but more importantly, by the headmaster of Hogwarts, Dumbledore.

"Practice spells?" Hermione subconsciously frowned.

Potter hated his weakness and longed to be strong. He had come to me several times before and begged me to tell him the techniques and methods of defeating the enemy. Zhang Cheng didn't try to hide anything, and generously admitted the fact that he had taught boys.

"Thank you very much, Professor, I think I get it. Hermione nodded in understanding, turned and disappeared into the hallway.

Seeing the background of the girl gradually disappearing, Zhang Chengyi asked the supreme authority with a deep taste: "Guess what, how will Dumbledore react when he gets this news?"

"Hehe, I promise, that old guy will stop Harry Potter's revenge plan at all costs, and maybe there will be an irreparable estrangement between the two, and even resentment. ”

"That's right, my plan has succeeded, and Harry will never change back to his old self, and I'm sure that old guy will be very angry and sad......8)