This weekend is undoubtedly another chemistry weekend.

Li Zheng really felt why it was called the endless sea of learning.

As he deepened his studies, he became more and more aware of his ignorance as he became 200+ in chemistry.

The previous high school chemistry study was just to memorize the most superficial knowledge.

For example, C+O2→ Co2, it is good to know that burning charcoal can produce carbon dioxide.

And now the competition learning is to explore why this is the case.

As the old man of the library said, human beings are becoming stronger in questioning "why".

In the chemical process of charcoal burning, how do the chemical bonds change, what is the final structure, and why is this happening?

A small carbon dioxide can dissect these things, not to mention the Mg2B2O4(OH)2 in the test paper.

Through this series of principle analysis, after mastering more basic chemical knowledge, you can push one to hundred, and no longer need to memorize any reaction formula, you can describe the reaction process and give the reaction results.

This kind of refinement and mastery of abstract principles is also the way for human beings to win in the face of infinite universe and infinite knowledge.

If it is said that the sea of learning in Li Zheng's eyes before was an endless sea level.

Now, he plunged headlong into it and witnessed the underwater world thousands of times deeper.

At this moment, I know that there is no end to learning, and there is no bottom.

But this did not dampen Li Zheng's enthusiasm at all.

On the contrary, he was even more excited.

The so-called endless learning sea, turning back is the shore, of course, is a nonsense sentence.

When you immerse yourself in the sea, your goal is not to reach the other shore at all.

It's about enjoying the joy of learning.

If it's not enough to simply learn to sail on the sea.

Why not try jumping and diving?

The scenery on the sea is inevitably the same.

This underwater world is much more enchanting, and there are all kinds of wonderful things.

In the face of these brand-new landscapes, unknown and exquisite knowledge, Li Zheng has no extra thoughts at all.

That's right.

......

Monday morning, the fourth class of the second year of high school.

Li Zheng is different from the past, and now he comes to school at 7:50 card.

After all, he no longer needs to study on his own early.

Better sleep and a more nutritious breakfast are key.

As class approached, the students were talking about the midterm exams.

"It is said that the results have come out......"

"I'm so panicked. ”

"Obviously, the parent-teacher meeting will only be held next week, why are you doing it so quickly......

"Long pain is better than short pain, just ask for a breath to announce it, and have a good time. ”

Unlike these anxious classmates, Li Zheng walked into the classroom with a red face, neatly pulled out a chair and sat down, and put all kinds of idle books and brushes on the table one by one.

Zhang Xiao could see him like this, and he was very envious.

This complexion is like gnawing on a big stick bone, doing a full-body spa, and sleeping a big night's sleep.

"Master, are you going on a trip on the weekend?" Zhang Xiaoke inquired, "Or do you go to the hot springs?" ”

"No, I've been learning. Li Zheng gently stroked the top of his head, "When you say that, I seem to feel that my hair has become more." ”

Zhang Xiaoke swallowed and spitted: "What are you...... Learning a regimen?"

"Learning, health...... It's kind of interesting. Li Zheng rubbed his chin and thought, "You see, playing Tai Chi or anything can maintain health, I will make a "Learning Health Regimen", so that the uncles and aunts can get together every morning to study and prolong their lives, which is not impossible." ”

"Uh......" Zhang Xiaoke didn't dare to think deeply at all, only lowered his head and clenched his fist, "The midterm results may be announced at any time, aren't you nervous?"

"Not at all. Li Zheng laughed, "After all, the weekend study has dissolved the turbidity of anxiety in my body, not only purifying the soul, but also relaxing the muscles and invigorating the blood......"

"That's enough, Master......" Zhang Xiaoke grabbed his head and lay on the table.

Seeing this, Li Zheng also stopped the temptation.

Yes, he is tempting.

In order to challenge the succubus, in order to inspire more people to indulge in learning, when he was okay on the weekend, he deliberately studied some marketing courses, combined with some cases of contemporary martial arts sects, and attracted everyone to join in the names of "physical fitness" and "health care", which seemed to be a tried and tested method.

Now it seems that this trick is not very useful, at least in the range of high school students.

It's a pity that my hair has really become more.

Learning to maintain health care may be one of the few health care methods that has been scientifically demonstrated.

At this time, a demonic wind blew.

Turning his head to look, Lin Yujing hurried slowly, stepped on the preparatory bell and sat on the seat, and when he pulled the schoolbag and took the pencil case, his mouth drooped, and his face was full of exhaustion: "Hmm......"

Li Zheng looked straight and chirped.

You see, that's the negative example.

She must have the wrong attitude towards learning, and if she didn't experience happiness, she naturally couldn't maintain her health.

"Master......" Zhang Xiaoke also secretly looked at Lin Yujing, leaned over to Li Zheng and whispered, "To be honest, how many points do you feel lower than Lin Yujing this time?"

"Huh. Li Zheng smiled but did not speak.

"You don't think you can surpass her, do you?" Zhang Xiaoke exclaimed.

"Who knows. ”

Lin Yujing's ears twitched, and he suddenly turned around, glanced at Li Zheng, his depressed face became wonderful again, and then shook his head, humming a little song and placing the stationery, "Mm~~Mmmm~~~"

On the contrary, Li Zheng's expression became hideous.

He gave birth to a terrifying hypothesis.

Conservation of happiness.

Lin Yujing doesn't seem to be happy with learning, but with Li Zheng.

Through a few simple expressions of guilt, she took away the happiness that Li Zheng had worked so hard to learn.

It's just too despicable.

Li Zheng was thinking about how to regain his own happiness, when the class suddenly quieted down.

Looking up, I saw Tang Zhifei walking into the classroom.

Perhaps because of today's important reasons, she changed into formal clothes again, and her eyes were extremely serious, as if she was coming to class for the first time.

After Tang Zhifei put away the materials, he clapped his hands and said, "Since everything is here, let's go to class two minutes early." ”

Momentary silence.

Tang Zhifei put his hands on the podium, and his two eyes swept over each classmate seriously and seriously.

On everyone's faces, there are anxieties and expectations, longings and fears.

Yet the wheels of history roll.

Can't escape, babies.

Tang Zhifei raised his hand expressionlessly, and showed a dense large table: "The midterm results have come out yesterday afternoon." ”

The people in the class immediately "rumbled" and chatted.

"...... so fast"

"Teacher Tang's face is not very good......"

"What a parent-teacher meeting. ”

At a time when students are becoming more and more anxious.

A few people, but they don't move, just waiting to be released.

Especially Jiang Qinghua, his fists have long been clenched.

It's time.

I've never worked so my exams.

Tutoring classmates has never been so sacrificial.

You two foolish Olympiad guys.

Feel it for yourself.

What is pain?

Jingle Bell –

The class bell interrupted the students' discussion at the right time.