After completing the compulsory high school mathematics 1, Liu Yichen was excited and put the exercise book and mathematics textbook into his desk. He took out the physics exercise book. All of them were obtained with the textbook. In addition, it was the homework book and a set of stationery.

In order to take notes better, Liu Yichen specially bought several notebooks, all of which were thick to record important knowledge points and questions that he thought were wonderful.

The physics exercise book looks very interesting, with a thickness of about half that of the math exercise book, including multiple choice questions, experimental questions, and large questions.

Liu Yichen was immersed in the joy of writing questions and automatically blocked the outside world.

Deng Linghao looked back at Liu Yichen from time to time, and there was always a look of confusion in his eyes. He was in the same school as Liu Yichen in elementary school and junior high school, and he was in the same class. He knew Liu Yichen very well. If anyone in the whole class knew Liu Yichen the best, it was Deng Linghao.

"Could Liu Yichen meet the girl he likes again, and was stimulated and worked hard again?" Deng Linghao muttered to guess.

Deng Linghao knew that Liu Yichen's academic performance in elementary school was very average, and he was at the lower level, unlike him, Deng Linghao, who has always been an excellent top student.

However, when Liu Yichen first started school, he met a girl. When he was in a vague relationship with love, he fell in love with this girl. As a result, this girl said that she likes excellent boys who are good at studying and is only willing to be friends with excellent boys who are good at studying.

After being stimulated by this, Liu Yichen worked hard, as if he had learned his mind, and studied hard, and then he inexplicably won the top four in the school during the final exam of the first semester of junior high school.

In the second year of junior high school, Liu Yichen's score ranking did not fall out of the top three in the exam, and sometimes he would get the first place if he accidentally took the lead.

By the second semester of junior high school, Liu Yichen's grades began to lose. Others didn't know the reason. Deng Linghao knew that it was because the girl Liu Yichen secretly fell in love with dropped out of school, and before he graduated from junior high school, he went out to work, so Liu Yichen had no motivation to study. As a result, others were making progress and Liu Yichen slowly retreated.

When it was time to take the high school entrance examination, Liu Yichen barely entered No. 1 Middle School, and even ranked last in the class in the last, which means that the high school entrance examination results are ranked last in the class, because the student number of each student in the class is ranked according to the high school entrance examination results.

Liu Yichen’s student number is 0608055. 06 represents students in Class 06, 08 represents Class 8, and 055 represents students ranked 55th in the class.

Don’t underestimate the student badges that students carry on their chests, as they contain a lot of information.

Deng Linghao noticed that when he entered high school, Liu Yichen changed again and became the good student who studied seriously. Out of inertial thinking, Deng Linghao's first thought was whether Liu Yichen met the girl he liked again, and then was stimulated again. The motivation from his heart made him burst out with strength.

Deng Linghao secretly glanced at the girls in the class again and observed that Liu Yichen liked which girl in the class!

"Huh~~ Could it be the squad leader 'Lin Ningwei'?" Deng Linghao suddenly observed that Lin Ningwei, who was sitting in front, was secretly looking towards Liu Yichen.

"Damn~~ Damn Liu Yichen, he actually started so early to compete with me for a woman!" Deng Linghao not only did not feel happy because of this awareness, but a flame burned in his heart.

Because, he also likes Lin Ningwei.

Lin Ningwei is the most beautiful girl in the class, and she has a cheerful personality. After two days, she became a group of classmates in the class, just like a peacock with her open-faced peacock, so beautiful and dazzling.

Deng Linghao was also attracted to his heart, and even secretly wrote love letters, just waiting to find a good opportunity to hand over the love letters to Lin Ningwei.

As a result, this was good. Before he could take action, Liu Yichen, the hateful guy, had already taken action first.

If possible, Deng Linghao would even want to beat Liu Yichen up.

Unfortunately, Deng Linghao did not dare because yesterday, the school’s rules and regulations were clearly introduced to each of them. One of them was to fight rigorously. Once they fought, they would face demerits and even be expelled from the school if the circumstances were serious.

After finally getting into No. 1 Middle School, which student is willing to be expelled from the school?

Deng Linghao decided to buy a puppet after he got home later, then write down Liu Yichen's name on a piece of white paper, paste the white paper on the puppet, and then stab him with a needle a hundred times, a thousand times!

Terrible resentment!

After the evening self-study, the students all left, and the entire classroom became empty, leaving only Liu Yichen.

No, not only Liu Yichen, but also Lin Ningwei, who was sitting at the first table in the first row. Lin Ningwei was lying on the table, but her eyes looked at Liu Yichen, who was at the last table.

"He is so handsome, he is handsome, and he is so serious in studying!"

Lin Ningwei's eyes seemed to be brave in love. The more she looked at Liu Yichen, the more she felt that Liu Yichen was handsome, and she was handsome. There were so many handsome guys among the stars. F4 was popular in China. Which one was not handsome? Which one was not cool? So handsome and studying seriously, this was simply adding charm value.

Moreover, he must have a good personality and must be a romantic person...

Lin Ningwei is automatically calculating.

As the saying goes, curiosity kills cats, there is another saying: When a woman becomes curious about a man, it is the beginning of love.

Lin Ningwei thought Liu Yichen was very handsome at first and could make friends with Liu Yichen, but was rejected by Liu Yichen, not once, but twice. This made Lin Ningwei, who had been smooth since childhood, very unwilling to accept that there was nothing she could not get in this world.

Then Lin Ningwei began to observe Liu Yichen, but found that Liu Yichen was very hard-working in his studies, his classmates were playing, he was studying, and the evening self-study was over, and Liu Yichen was still studying. Then she became curious. She didn't understand at all that serious men were the most attractive, and their lethality to women was huge.

The result is like this, before I knew it, I began to automatically replenish Liu Yichen into the perfect male god in my mind!

"Ning Qian from the next class seems to be a junior high school classmate with Liu Yichen. I'll find an opportunity to inquire with her..." Lin Ningwei was already planning.

As the saying goes, knowing yourself and your enemy, you will win every battle. As a good student with excellent academic performance, Lin Ningwei still knows this truth.

Ning Qian is the squad leader of Class 9 next door. They are also the squad leader. They had met each other yesterday and had a preliminary understanding.

Before she knew it, Lin Ningwei couldn't stand it anymore. She looked at the wall clock on the wall. It was already half past ten. If she didn't go back to the dormitory, the gate of the dormitory building would be closed, and the lights were not far from the dormitory building. She didn't dare to take a shower when it was dark.

Lin Ningwei muttered to herself, then left with her schoolbag on her back. Seeing that Liu Yichen didn't even raise her head, Lin Ningwei muttered - she really doesn't have the temperament of gentlemanly.

How she hoped to hear it, Liu Yichen said, it’s so late, it’s not safe to walk alone, I’ll take you back to the dormitory!

Unfortunately, she couldn't hear this until she left the classroom, 10 meters away.

Liu Yichen, who was killing monsters in the sea of ​​questions and gaining experience points, did not know the rich psychological dialogue of a little girl? At this time, he was already crazy and he conquered physics questions. The sense of accomplishment made Liu Yichen feel that the most wonderful thing in this world is to practice questions.

I was really young and ignorant in my previous life, and I didn’t understand this principle. If I had understood this principle earlier, how could I keep him in an ordinary school? At least I would not be a 985-year-old school!

"A kindergarten wants to make a slide on the open space (as shown in the figure). According to the size of the open space, the horizontal span of the slide is determined to be 6m. During the design, the dynamic friction factor between the skateboard and the children's pants material is 0.4. In order to enable children to slide down on the skateboard while playing the slide, how high should the slide be?"

Liu Yichen came up with a question at this time, which was a typical question. After rotating the pen in his hand, he directly drew a right-angle triangle at the place where he answered the question below, and then read the inclination angle as θ, treat the child as a particle and conducts force analysis. The particle has vertical downward gravity, support force perpendicular to the inclined surface, and friction force parallel to the inclined surface.

Then, the gravity is decomposed along the inclined direction and perpendicular to the inclined surface to obtain a downward force perpendicular to the inclined surface and a parallel to the inclined surface. If the child is able to slide down from the slide, the force along the inclined surface must not be less than the friction force.

Along this idea, Liu Yichen wrote: "In the x-axis direction, f1-ff=0,ff=f1=gsinθ=g*h/l; in the y-axis direction, f2-fn=0,fn=f2=gcosθ=g*b/l; and friction ff=μfn."

"So, g*h/l=μg*b/l,h=μb=0.4*6=2.4m. So the slide must be at least 2.4m high so that children can slide down from the slide."

When Liu Yichen had just written the last line and the last word, the classroom lights turned black with a "click" sound. Liu Yichen suddenly woke up from the sea of ​​questions, stopped carrying his schoolbag, and rushed out of the classroom, and with a "puff" sound, the classroom door closed.

Without caring about the soreness of his feet, Liu Yichen ran towards the dormitory building, almost catching the time point. Liu Yichen rushed into the dormitory building before the door of the dormitory building was about to close, and then he breathed a sigh of relief.

Very dangerous!

Liu Yichen said intimately, looking at the closed door of the dormitory building, Liu Yichen then went to the dormitory and climbed the stairs. The pain was so painful that Liu Yichen grinned. He had never wanted such an elevator as he did now, so that he could comfortably go to the sixth floor and return to the dormitory.

Walking into the dormitory with a sore body, Liu Yichen saw that the dormitory was on, three desk lamps had already been turned on, and his three roommates started the moment of fighting. He greeted him, took the changed clothes, went into the bathroom to take a cold shower, washed the changed clothes, and then took the washed clothes to the balcony to dry the clothes. He didn't like to soak the clothes in water, and always felt the smell of water stains, which made him very uncomfortable.
Chapter completed!