While using math competition questions as a gap in training tasks, Li Xuan looked at Feinman physics and appreciated the vast beauty of physics.

Because the physics foundation in high school is OK, the whole process is still smooth and there are basically no difficulties. Even the opinions in many places in the book are surprisingly consistent with his ideas. He even thought that if he had been born a few years earlier, these theories would have been derived.

Generally, if you have a better mind, you will be a little arrogant. When you can easily understand the contents of the book, you will easily lose a sense of awe. After Li Xuan's mind is cured, he unfortunately suffered from this disease. This symptom must be waited until one day to read the book and have a new understanding of the knowledge you have learned before he will respect the past again.

Li Xuan also read the special theory of relativity easily, knowing that the theory of relativity is derived based on the principle of relativity and the assumption that the speed of light remains unchanged, which is very simple to understand for him.

Because of life experience, I was unable to understand Newtonian mechanics and Galilean transformations. Later, because of classical mechanics, I could not understand relativity, so I just accepted it passively. If I break the inherent thinking mode, keep a questioning mentality, and understand the process of establishing science, it will not seem awkward.

The higher you stand, the more you will be amazed at the beauty of science, the hidden rules in everything in the world, making the universe like a program written by God. No wonder Einstein and Newton also believe in religion.

Li Xuan thought that if humans continue to develop in this way, relativity becomes a compulsory course for primary school students. After all, the content taught in primary schools is extremely profound hundreds of years ago.

...

...

This weekend, Li Xuan decided to go to Xu Lingchu's house. Before he went, he felt a little nervous. He stood at the door of Xu Lingchu's house several times, but unfortunately he had never been in and stepped into that critical step. The small villa where her home is located is well planned in the so-called wealthy area, and he can live here with a middle class or above.

This time he went to Xu Lingchu's house to tutor her younger brother in elementary school mathematics, and he first met Xu Lingchu's mother. On the way, Xu Lingchu told him to talk as little as possible and just play the role of a taciturn and unspeakable academic master.

Li Xuan thought a lot in his head, and entered the door, and then... how to talk about his relationship with Xu Lingchu, should he tell Xu Lingchu's mother directly that he is a boy, so as not to cause misunderstandings?

Li Xuan was quite confident in his heart when he came to Xu Lingchu's house. When he arrived at Xu Lingchu's house, Li Xuan was stunned. The one who showed his head was a noble lady. The dark green chiffon was elegant and capable, and the snow-white trousers were very professional and feminine. He dyed hair with indescribable color similar to black, had fair skin, expensive earrings on his ears, and was smart and capable. The aura of a strong woman was so irresistible that ordinary men could not resist.

Is this Xu Lingchu's mother?

Li Xuan really didn't expect that Xu Lingchu's mother was completely different from Xu Lingchu. When Xu Lingchu got in close contact, she was like a violet, sweet and bright, pretty and cute. She was not as elegant and elegant as her mother. She gave Li Xuan the impression that she wanted to bully her. Yes, Li Xuan wanted to bully her.

And her mother is mature and steady.

Li Xuan thinks that women with temperament are very charming, especially when they have a good figure and are a little sexy, which makes them even more eye-catching. Of course, Li Xuan just admires them when facing them. If he doesn't want to get close, there will be problems when he gets close. Either you conquer her or she conquers you.

As expected, cute girls are still more cute, so if you want to choose a cute girl or a royal sister, Li Xuan's answer is certain that he has big breasts. Of course, he is Xu Lingchu's mother now, so he still cannot have strange ideas.

At this time, Xu's mother opened the door and saw that Li Xuan was a girl and had short hair. She felt relieved and smiled and said, "Xiaoxuan, right? Lingchu said that you are very good at math, and I will give you Xindi's math. You have to teach it well. When I come back, I will check what Xindi has learned. I have something to go out in the morning. I will ask Lingchu to give you the reward for the tutor."

After saying that, he walked out in his high heels.

"Mom, be bye, be careful on the way!" Xu Lingchu said goodbye to Xu's mother, and then blinked at Li Xuan.

"What's the situation? This is?" Li Xuan looked strange.

"My mother doesn't let me play with boys." Xu Lingchu said with a pursed lips.

"So you lied?"

Li Xuan was a little helpless and sighed, "Pills, how can I explain it in the future."

Very helpless.

The mother-in-law will beat him to death after knowing the truth, especially when she personally let a boy enter her house and get intimately with her daughter, she will be so angry that she will vomit blood no matter how she thinks.

Deception is not a long-term solution after all. It was a technical problem at the beginning, but now it seems to have become a problem of integrity. Of course, Xu Lingchu's mother has gone far away now, and it seems unnecessary to think so much.

After entering the door, Li Xuan felt familiar and familiar in the decoration, furniture, lamps, floor tiles, and walls of the entire house. This was not because of the taste of Xu Lingchu, nor because he had lived in such a luxurious place, but because he had seen Xu Lingchu chatting with her and posted a lot of pictures and videos about her home.

Li Xuan looked around and was looking for Xu Lingchu's younger brother Xu Xindi whom he wanted to tutor.

Xu Xindi is only in the third grade, and now children go to school earlier and earlier. The third grade looks no different from the previous first grade.

Then Li Xuan saw that little guy. He didn't understand why Xu Xindi wore so much. He covered himself tightly in an air-conditioned room, and was not afraid of being dying of heat.

Xu Xindi seemed to be very disliked being tutored by strangers and was trembling in the corner. However, when she saw Li Xuan coming, she showed surprise. She threw away her coat and took off all her defenses: "Wow, sister!"

“…”

Li Xuan didn't know what to say, looked at Xu Lingchu and wanted to wait for her to explain.

"Yes, it's my sister."

But Xu Lingchu smiled secretly and didn't want to explain at all. Then he leaned against Li Xuan's face and whispered in Li Xuan's ear, "You teach Xindi in the morning, and I'll play with you in the afternoon."

Play?

The dissatisfaction in his heart disappeared. Li Xuan turned his head in surprise and looked at her with only a fairy-like smile. His pair of dark peach blossom eyes bent like crescent moons. He seemed to understand something, but after thinking about it carefully, he didn't understand at all.

What to play? It seems quite interesting.

Li Xuan nodded and asked Xu Xindi to take him to the room. Xu Xindi liked Li Xuan very much. She was surprisingly obedient and followed Li Xuan quietly, looking at Li Xuan's side face.

After entering the room and coming to the small desk, Li Xuan picked up the third grade Olympiad book and read the catalog: Ola Seven Bridges, Chicken and Rabbit Cage, Digital Mystery, Shortest Route, Misddler, Binary. Is this what I learned in the third grade? He had to sigh that the content of elementary school students is much richer than before, and there are more and more early education students.

Xu Lingchu also followed in and looked at Li Xuan quietly from the side.

Li Xuan remembered his existence in elementary school, where Olympiad mathematics was like a nightmare, and deeply tortured him, but now he looked at it, but now he didn't feel the difficulty at all. This was his growth in his thinking. Then he opened the first topic "The Seven Bridges Problem".

The Olympiad questions that come into view in the third grade of elementary school: "Can you draw the fifth ring of the Olympics in one stroke?"
Chapter completed!