The four basic forces of the universe refer to strong interaction forces, weak interaction forces, electromagnetic interaction forces, and gravitational interaction forces.

Among them, in terms of strength, the strongest one is the strong interaction force. This short-range force belongs to the interaction force between quarks. It overcomes the strong repulsion force generated by electromagnetic force and tightly bonds the hasron into atomic nucleus.

Among the four basic forces, the weakest one is... the universal gravity mastered by Pei Chen. The interaction between all mass objects is manifested as attraction. The law is the law of universal gravity, and the more accurate theory is the general theory of relativity. However, among the four basic interactions, the weakest, far less than strong interactions, electromagnetic interactions and weak interactions, can usually be ignored in the study of microscopic phenomena.

However, everything in the world is not absolute, but relative. Although gravity can almost be ignored at the microscopic level, it can play a huge or even decisive role between things with huge mass, such as celestial bodies.

Because gravity is achieved through the field - that is, the space-time bending caused by particles, or through the quantum of the exchange field.

Of course, even if Pei Chen knew that this great power of the universe had a great future, he could only stare at the moment. After all, he still had a long way to go before he could fully develop the mystery of this power.

"At present, even if you try your best, you can only affect part of the force field of the planet, and just take advantage of the situation... If you want to truly exert influence on the abnormal points of time and space, it may be the skill level of level 7..."

Holding his head, Pei Chen felt a little depressed. He worked hard for so long, and almost every moment to exercise the subtle control of the gravitational field. At present, he just felt that the skill threshold from level 5 to level 6 had loosened. If he wanted to increase it to level 7... he felt desperate if he thought about it.

"Forget it, take it slowly, most people have upgraded by using their skills..."

With a fierce wave, he controlled the invisible gravitational hand to pinch the throat of the werewolf that was pounced on in front of him, and held it high, allowing the latter to continue to struggle and roar. Pei Chen frowned without any trace, and once again threw the black giant wolf that stood up from him and flew out!

The forbidden forest on the outside of the school borders the Quidditch Stadium, but it is simply incomparable to the real area and degree of danger. The forbidden forest is very large and students are prohibited from entering because there are too many dangerous species living in it, and werewolf and vampires are even more common.

When faced with these vicious creatures, some of them were afraid of the three-headed dogs and even Phoenix Fox, let alone ordinary students. Even the seventh-grade senior apprentice would not be allowed to enter the Forbidden Forest.

However, Pei Chen is not a student, so this rule was naturally ignored by him.

"How big is this forbidden forest..." He said with a wry smile, looking back at the dense and gloomy jungle, the twisted and winding branches and vines had completely covered the road when he came. He had been wandering in this forest for two hours, but the infinite space still did not prompt the exploration of the hidden map.

But he couldn't get around it. This black forest was obviously part of the Hogwarts Magic School. Pei Chen lost the largest piece of cake by getting the exploration progress of this place. Only a fool would do this, so he decided that he must turn the forest to the bottom.

"But let's stop here today...it's time to go back."

"Roar!" The huge werewolf two meters tall on the other end was breaking a big tree, and she was able to struggle to get up and rush over again without fear of death. This made Pei Chen's eyebrows instantly raise. How brainless is this guy? Could it be that even his IQ will be lowered after letting the wild dominate the body?

The werewolf was extremely fast and rushed to Pei Chen in less than three seconds. A fishy storm hit his nose, making people feel disgusting. Then, a sound of something broken sounded, and the werewolf flew backwards, and his head exploded like a watermelon, completely dead.

Pei Chen shook his hand and felt that the skin on his arms seemed to be slightly shattered by the huge recoil force, and a slight pain came.

However, his attention was no longer on this, it was just a subconscious action.

"Apostle number 1065, you killed the [Abnormal Creature - Werewolf] hidden in this scene! The exploration progress has increased! This type of abnormal creature is only composed of the magic world, please continue to work hard!"

"Ha! So in addition to exploring maps, is killing unknown creatures also considered a way to explore?" Pei Chen's eyes lit up, "So, those magical creatures such as vampires, unicorns, dragons, and phoenixes should also be classified into this category, right?... Well, I just don't know if those wizards are considered 'abnormal creatures'?"

As he spoke, he couldn't help but become excited, with strange and malicious light flashing in his eyes. In the end, he even wanted to add the wizards, the masters of the magic world, to the prey list.

Some people’s bottom line is really lower!

...

...

"Dear Mr. Mercury, a sage from the ancient Eastern Kingdom, I don't know if you can..." Hermione was reading aloud with a written report, but was interrupted by Pei Chen's wave.

"Put your damn aria, I feel a headache when I hear it...and you don't look at where this is, don't speak so loudly."

"Then my goal will be achieved." The girl smiled very happily, but she obediently put down the document in her hand, carefully observed the surroundings, and then curiously looked at the Oriental Wizard in front of her: "Are you going to be a teacher in this school?"

"I haven't agreed yet, okay?" Pei Chen said angrily. Now they are in a corner of the library. Pei Chen originally just came here to take a rest and check the information. However, he didn't expect that he could see the employment letter brought by the academic master and her here.

"Then are you going to agree?" Hermione seemed a little excited and kept asking in a low voice. This was because the noise was prohibited in the library, otherwise she would have spoken louder.

"What does this matter to you?" Pei Chen waved his hand and made a flies, "Even if I really served as a professor in the magical biology protection course for the time being, it has nothing to do with your first-year students. You don't set up this course."

He was so annoyed. Why didn't that old man play cards according to common sense?

But he had no choice, because the identity of the substitute teacher in the Magical Biology Protection Class came too timely, which means that he would have an official recognition. He could openly explore and find Hogwarts' secrets according to his wishes - as long as it is not too sensitive, and he doesn't have to worry about anything he did sneakily like before.

If he does this, he feels that he can understand most of the secrets of the entire magic castle in half a semester, and may even reach out to other places, such as the Azkaban Wizard Prison he has heard of, or the Hogsmeade Village, a pure wizard village near the Hogwarts Magic School, or it may be just other magic schools.

It's really hard to deal with! How should I choose? He sighed so much.

Hermione said, "How come it doesn't matter? You are my pet, aren't you?" As she said that, a sly light flashed in her eyes. Looking at Pei Chen's awkward expression, she obviously didn't want to talk about this dark history that made people lose their faces.

Pei Chen dared to promise that if others were brave enough to talk about this topic in front of him, he would be taken to the septic field less than three seconds after the topic was opened! But the person who talked about this topic was an eleven-year-old girl, and he had no way to start.

After all, it's all about her own brains, and it's not Hermione's business.

"The magical creature protection class has three sessions a week, all for different grades, namely the second session on Monday afternoon, the second session on Wednesday afternoon and the first session on Friday morning... and our course happened to have no classes on Wednesday afternoon, so I can come and have a look!" Hermione said, calculating with her fingers, as if she had already thought about what was going on.

"Forget it, I have to think about it carefully... By the way, then again, Hermione, how could this employment letter be in your hands?" Pei Chen was a little curious.

"I don't know either. Professor McGonagall stopped me during get out of class." Hermione was slightly stunned when she heard the other party calling her name for the first time, but she quickly reacted, "I didn't know where you were. I wanted to go to the lake to take a look, but I didn't expect to see you when I came to the library to return the books."

"Is there such a coincidence?" Pei Chen was a little suspicious.

He didn't believe it too much. After all, the power system in this world is so evil. It's not uncommon to say that there are some strange things that can accurately capture his position.

"You still said you didn't mean to agree?" Hermione asked suddenly.

"What?!" Pei Chen couldn't react for a moment until he followed her gaze and saw the book he had found before and spread out in front of him - "The Complete Collection of Magical Biology Pictures: 1956 Edition", and then he realized it, and his eyes became a little strange.

He cleared his throat and said to Hermione seriously: "If I were to read this book, the reason I was just to consider which type of magical creature to attack, and to see which one is easier to kill... would you believe it?"

Sure enough, the little loli looked at the psychopath.

"Believe me, I'm serious."

“…”

"I'm not nervous, and I'm not kidding."

“…”

"Don't you think the dragon slaying is very exciting? Don't you believe it? I'm afraid that even Dumbledore has been beaten..."

“…”

"Okay, I'm actually nervous." Pei Chen touched his nose and said that, and then the little loli finally responded, and seemed to agree with his words. Nowadays, no one believed the truth!

It's such a regret! It seems that the dragon-slaying plan needs to be temporarily put aside. Now I have to deal with the position of substitute teacher of the damn magical creature protection class. Pei Chen stood up with infinite regret, glanced at the books spread out in front of him, and then slowly closed it.

Hermione stood on tiptoe and glanced at her curiously, but she could only barely see a pattern, which was a giant with a particularly eye-catching appearance covered with smooth scarlet scales. "Are you very interested in Chinese fireball dragons? I heard that they are the only fire dragons in China."

She couldn't help asking.

Pei Chen glanced at her, then thought for a while, nodded: "Yes, I'm very interested."

Why are you not interested? The Chinese dragon is actually a bird-like big winged lizard, so why are you not interested?

It's simply... I can't wait to go over and slaughter them!!
Chapter completed!