Xia Lu adjusted his mood and focused on the chemistry problem in front of him.

"Calamine (ZnCO3) is used as a medicine to treat skin inflammation or superficial trauma. In ZnCO3, the anion space configuration is ____ and the hybrid form of the C atom is ____. ”

Ouch I'll go, the first question is so difficult, this seems to be the knowledge point in the high school chemistry elective textbook.

After all, Xia Lu had listened carefully to a few chemistry classes and knew that the structure and properties of matter were elective.

It's not enough to know that this thing comes from a chemistry elective textbook, and only by giving the correct answer can the true strength of the strong be reflected.

Xia Lu flipped through "High School Chemistry Elective 3" and found ZnCO3 in a hidden and dark part of a certain page.

The anion space configuration is planar triangle, and the hybrid form of C atom is SP2...... Xia Lu wrote the answer in the answer field.

The mental level is upgraded to an ordinary two-star and it does have an immediate effect, Xia Lu's answer ideas are particularly clear, and he can't do the questions and copy the answers.

The actual combat effect of brain power is based on the amount of knowledge reserves, and the more knowledge reserves are deeper and deeper, Xia Lu's brain power can exert the strongest combat effectiveness of the current grade.

The breadth and depth of various knowledge reserves cannot be exchanged for points, which requires Xia Lu to gradually accumulate step by step.

Throughout the morning self-study, Xia Lu did a total of five chemistry questions, and wrote the answers while flipping through the book.

Liu Junwen watched coldly, and the friendship between him and Xia Lu continued to depreciate, -1 point.

"Hey......" Xia Lu got up and left the classroom to go to the bathroom very melancholy.

Pick your arms and press your legs, this morning is so fulfilling. Xia Lu returned to the classroom for the first class.

The first class in the morning was Hu Qianqian's chemistry class.

Mr. Hu graduated from biology and first taught middle school physics, and also taught mathematics classes for several years, and now he is shining as a chemistry teacher.

Teacher Hu has a strict personality, and Xia Lu is a little afraid of him.

At the same time, Xia Lu also respects Mr. Hu, Lao Hu is a talent, mathematics, physics and chemistry are all eaten.

In November of the third year of high school, Hu Qianjin no longer taught chemistry textbooks, and his teaching method was simple and clear: doing questions, exams, explaining topics, doing questions, exams, explaining topics...... Till death rests.

"I have talked many times about the answering skills of this type of question about the electron configuration outside the nucleus, and I will talk about it for the last time today. If anyone still loses points on this kind of question, then I have no tricks. Hu Qianqian's teaching is very targeted, and the students in his class will talk about the thinking logic and problem-solving skills of which type of chemistry problem is more wrong.

"High school chemistry is half memorization and half comprehension. If you don't understand it, you're going to give me rote memorization! SP hybrid orbital theory is too difficult? Do you have a problem with your IQ?"

"I told you, high school chemistry is much easier than math and physics, and I don't require you to get good grades in chemistry competitions, if you can't get more than 90% in the chemistry part of the college entrance examination, it is equivalent to failure!"

Hu Qianqian scolded as he spoke, and continued to talk after scolding.

The focus of this chemistry lesson is on the core ideas of solving problems such as electron configuration, hybrid orbitals, crystal microstructure, and chemical bond characteristics.

In the past, Xia Lu's brain exploded when he saw this type of chemistry question.

Xia Lu is good at chemistry questions with a strong sense of picture.

What elements may be contained in a salt that burns and has a yellow flame color?

What kind of gas can be made by reacting manganese dioxide with concentrated sulfuric acid?

What kind of phenomenon can be observed when Br- is dropped into the AgCl pellet?

Such types of questions, Xia Lu rarely misses, and he can score 25~40 points in the chemistry exam, which is how he came.

What Xia Lu is most annoying is the hybrid orbitals, the microscopic characteristics of molecules, atoms, electrons, etc., which cannot be seen or touched, very abstract, and difficult to make up for the brain.

It's also strange today, in this chemistry class, Xia Lu actually listened to it with relish.

Because when he was studying on his own in the morning, he did five abstract microscopic chemistry problems in a row.

It can't be regarded as a positive solution in normal mode, at best, it is copying the answer while flipping the book, and brushing the question in reverse.

Flipping through the book and copying the answers has some effect, combined with Mr. Hu's rough but practical lecture style, Xia Lu listened carefully to this chemistry class and gained a lot.

Jingle bells!

The bell rings for the end of class.

Hu Qianqian popped out half of the chalk in a chic manner, and the chalk tip fell into the chalk groove of the blackboard impartially.

Patting the remaining chalk ash in his hand, Hu Qianqian brushed his sleeves away, leaving behind a blackboard of sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, argon, potassium and calcium.

"Mr. Hu said it so well, I feel that I have become stronger in the field of chemistry again. Xia Lu sighed that for more than two years, he experienced the joy of learning for the first time in chemistry class.

The teacher-student relationship with Hu Qianqian is +2, and the latest valuation is 368 points.

The love of classmates with Liu Junwen -1, the latest valuation is 9 points.

This chemistry lesson seems to be unremarkable, but in fact there is an undercurrent, and the valuations of all parties have undergone subtle changes, both up and down.

In the second Chinese class, Xia Lu continued to listen carefully.

Chinese is Xia Lu's strength, and Xia Lu can get more than 110 points in the 150-point Chinese test paper.

Xia Lu listened to the Chinese teacher talk about Chinese topics, and there was basically no obstacle for him, so he gathered to take notes and draw key points on the Chinese exercise book.

The love of classmates with Liu Junwen -2, the latest valuation is 7 points.

Hey, Liu Junwen is completely depraved...... Xia Lu saw it in his eyes and was anxious in his heart.

Chemistry class was in a daze, Chinese class was in a daze, and Liu Junwen was drifting away on the wrong path.

During recess, Liu Junwen didn't say a word to Xia Lu.

Xia Lu took the initiative to find a topic: "Liu Junwen, have you watched the recent blockbuster, let's take the time to go to the movies together?"

Liu Junwen said coldly: "You go by yourself, I'm not in the mood." ”

Xia Lu: "Next month is a double moon, and I'm going to change seats again, how I hope to sit with you forever." ”

"You go die. Liu Junwen said expressionlessly.

The love of classmates with Liu Junwen is -3, and the latest valuation is 4 points.

"I ......" Xia Lu didn't dare to continue talking to Liu Junwen, this Nima talking about something unrelated to learning would also make our classmates tend to be cold?

Human feelings are the most complex and difficult things in the world.

I'm good to you, I care about you, why do you keep depreciating?

This is not scientific!

Hey, maybe it's hard to explain things like emotions scientifically.

Xia Lu walked out of the classroom to breathe and further familiarize himself with the various settings of the system.

Knowledge and skill commodities will form a certain degree of systematic knowledge structure or skill proficiency and have a certain value, and the valuation information will appear in the system.

Only knowing 1+1=2, this extremely simple mathematical knowledge point cannot be estimated.

Only after systematically learning the mathematics knowledge from primary school to middle school can the overall mathematical knowledge of the host be evaluated.

Breathing air is also a skill, but this innate skill has no value in the system.

It is valuable to inhale a breath of air and dive underwater for a certain amount of time to form a new skill --- hold your breath underwater.

It is not difficult for Xia Lu to speculate that if he improves his math score, the valuation of mathematical knowledge in the system will also increase. If you practice your underwater breath-holding skills to the extreme, you may be able to sell them for a sky-high price.

This is called investment in knowledge, investment in skills.

Of course, there is also emotional investment.

The students in the hallway are chatting or moving their muscles, and this floor is full of senior high school graduating classes.

Xia Lu stood by the corridor window and looked into the distance, thinking about a profound philosophical question.

If you invest a certain knowledge, skill, and emotion at a high valuation, are you willing to sell it?

This is completely different from speculating in real estate and stocks.

Capital investment has only one purpose--- to make money.

What is the purpose of investing in life?

If investing in life is just to become rich, then Xia Lu can do it now.

Let's take a step at a time, Xia Lu first set a small goal at the current stage, that is, to improve the grades of physics and chemistry students outside of language and mathematics, and pass the college entrance examination.

Suddenly, a fragrant wind swept by, and a woman fluttered to Xia Lu's side.

With a ponytail tied behind her head and a few strands of hair floating on her forehead and sideburns, this delicate girl bit her lip lightly, was silent for a moment and finally spoke: "Xia Lu, you have changed." ”

"Oh?" Xia Lu turned his head and said politely: "Hello, Meng Jiaqi." ”

Eh, is that polite? So blunt?

Meng Jiaqi was stunned for a second, then returned to normal, she said: "Xia Lu, although your academic performance was average before, you were lively and cheerful, careful and thoughtful, and a boy with a pleasant personality. I have always thought that you are a smart person, as long as you make up your mind to play fewer games, read fewer novels, and put more effort into studying, you will not be worse than others. Really, I used to be very optimistic about you, and I thought you would definitely become the dark horse of our year. ”

"Oh, that's right. Xia Lu said calmly.

Meng Jiaqi said to her ex-boyfriend with some concern: "But recently, you have become very depressed, which is not a good sign." Xia Lu, promise me, no matter where you go in the future, what kind of life you face, don't give up on yourself, okay? I'm looking forward to the reappearance of Xia Lu, who is full of vitality. ”

"Hey, are we very familiar?" Xia Lu looked at the eldest sister in front of him suspiciously, he felt strange, we are not familiar with each other, how can you be the same as my mother?

Eh, what's the situation?

Meng Jiaqi also felt confused.

Patting and breaking up, which is very common in high school.

According to the official statistics of the Education Department, the proportion of high school students in the country who fall in love in the third year of high school is declining year by year, and the first and second years of high school are the peak period of falling in love, and the students in the third year of high school are still focused on their studies.

Meng Jiaqi and Xia Lu closely followed the policy guidelines, and the two met, knew each other, fell in love in the second year of high school, and finally broke up peacefully.

After the breakup, Xia Lu not only became depressed, but also very strange...... Meng Jiaqi has an indescribable feeling, Xia Lu and I have become the most familiar strangers?

No, maybe the word familiar has to be removed, Xia Lu's attitude towards me today is completely to treat unfamiliar strangers. He looks like he's in the play, not like he's pretending! Oh no, it's not in the play at all, it's like acting in his true colors!

Jingle bells!

The class bell rings.

"Xia Lu, let's eat together at noon, old place. After Meng Jiaqi said this, she trotted all the way back to the third (6th) class of high school, her ponytail swaying in the wind.