The sky is clear and the sun is shining.

A certain day.

Lin Qianqian: Brother apprentice, it's all boring, come on, watch us do an interesting experiment.

Chu Ming, who walked over calmly with an expressionless face, saw a long transparent glass cup, a piece of paper that I didn't know what was written, a round plate with two palms wide, and a glass of water.

Lin Qianqian, who squeezed his eyebrows: Next, please enjoy the wonderful performance from the Huangfu master!

Yan Wumei, who was hard-pulled: ......

Xiaobao who was threatened: ......

Continue to look expressionless Chu Ming: ......

Lin Qianqian, who rolled up his sleeves, poured all the water into the plate, and handed the piece of paper to Chu Ming: Come, light a fire for me!

Stared at her bare arm, the fire lit up, and then Lin Qianqian stuffed it into the upside-down glass cup.

Then, everyone opened their mouths wide in shock (except for Chu Ming, who was accustomed to facial paralysis).

Xiaobao: How could it be?!Did you use some kind of magic?

Yan Wumei: Little pliers, how did you do it without using spiritual power?

Chu Ming's eyes, which were aroused by curiosity, lit up slightly, and stared at Lin Qianqian with everyone.

Lin Qianqian, who clenched his fist to his mouth: Ahem, next I will invite our greatest Huangfu master to explain on stage!

After speaking, he jumped on the chair and said with a deep voice: The phenomenon of "automatic drinking water" in this glass cup is mainly due to the fact that the air pressure in the glass cup becomes smaller due to combustion, so it leads to the backflow of water.

Everyone was confused: air pressure?

Looking around, she was satisfied with the bewilderment and confusion on everyone's faces that could not be ignored, except for her own apprentice, facial paralysis had nothing to save her and she had given up.

Lin Qianqian: Ahem, everyone, don't be impatient, wait for me to talk carefully.

All:...... You mean!

Lin Qianqian calmly drank a cup of tea, ha, refreshing!

staring at the resentment, he cleared his throat again, and opened his mouth like charity: What about this air pressure, just like this.

Chu Ming's expressionless face was ruthlessly squeezed, his mouth was forced to pout into a figure 8, and his waveless peach blossom eyes were stiffly piled into small eyes.

Lin Qianqian, who entered the role of a teacher, dutifully explained: You see, my face is deformed as soon as my hand is pressed, and this is because I put pressure on my face.

accidentally glanced at the apprentice's dark eyes, and with a shake of her hand, Chu Ming's nose was poked into a pig's nose by her...... Looking at the two nostrils that rushed to the sky, Lin Qianqian walked away calmly.

It is said that the apprentice's face feels delicate, soft and slightly cool, and when he pinched it, it looks like jelly, which is a little thinner.

Lin Qianqian, who entered the role again: In the same way, in fact, there is no pressure in the air all the time, well, it has a professional name, called pressure. In addition to air pressure, the resistance we feel in water is called water pressure, and there is voltage when thunder and lightning strike, and so on.

All:...... Oh (⊙o⊙) Oh~ But I'm still a little confused.

Lin Qianqian: Ahem, this pressure will generally be upset when the "enemy" moves and I move. Therefore, this experiment uses combustion to reduce the air pressure of the glass jar, so it replenishes the water back into its own field to achieve the equilibrium point of pressure. Do you all understand?

The people who looked at each other: ...... It seems to understand and it seems to be weird.

Chu Ming, who was expressionless and still rubbing his face: Master, why does burning lower blood pressure?

Lin Qianqian, who didn't dare to look at each other, replied to the air: Good question! This is because the burning not only burned the paper, but also burned the inside of the glass cup... Oxygen, which also produces water vapor and carbon dioxide (she shouldn't have said anything about oxygen, she's done with it).

Everyone, including Chu Ming, looked confused: Oxygen, carbon dioxide?

Lin Qianqian finally felt regretful, when the teacher was so dry-mouthed, he drank a large cup of tea violently, and put it down with a "duang!".

Jump to another chair and put on a serious face: oxygen is all of us that need to breathe, the air that we breathe into, the gas that is really used and absorbed by the body. Carbon dioxide is the main exhaust gas that we exhale out after we use it.

God, she may also talk about what is hot expansion and cold contraction!

Lin Qianqian: Ahem, I had an old timer who had done experiments, so I understood this. When burned, oxygen is burned out, mainly carbon dioxide and water are produced.

Therefore, the oxygen in the glass cup was burned, and new gas was born, why did the air pressure still decrease?

(Lin Qianqian: I want to say more, can we not, can we, we will break it down next time.) )

The starry eyes of the people who are hungry for knowledge: ......

Lin Qianqian: It is mainly due to the combustion. You guys...... Do you know what thermal expansion and cold contraction are?

All:...... Do you think we know it?

Lin Qianqian, who accepted his fate, picked up the ruler again: Apprentice, come two eggs, set them on fire and cook them for me.

Chu Ming conscientiously carried it out and handed it to her.

Lin Qianqian's left hand is a chicken and a duck in her right hand cough cough, make a mistake and start over, she has an egg in one hand, the spiritual power in her left hand is soaked in water, and her right hand does not move, three minutes later.

Lin Qianqian, who peeled eggs seriously: Everyone looks at me peeling eggs, you see, the egg body soaked in cold water in the left hand is intact, and the shelling is very smooth, and the egg body in the right hand is pitted and extremely difficult to peel. This... It is thermal expansion and cold contraction.

Sigh and continue: The vast majority of objects have thermal expansion and contraction, like a person who shrinks his neck when he is cold and wears cotton clothes, and coughs when he is hot when he takes off his clothes and his bare shoulders, for example.

This water vapor and this air will also expand and contract. When the paper is burned out and the temperature begins to drop, the water vapor and air in the glass jar will shrink sharply, and the pressure will also become lower.

All:...... Oh (⊙o⊙) Oh!

Chu Ming, who was about to raise his claws after thinking about it but was glared at by Lin Qianqianmei: ...... Oh, I get it too.

......

So, Chu Ming adopted the classic principle of thermal expansion and cold contraction and set it on fire.

Turn the ice inside into water vapor and stop.

At the farthest point from the mouth of the crack, or the farthest from the mouth of the crack, sit and wait for the water to come from the ground.

Gradually, the big pit of the space was occupied by water again, and only when the trickle was pouring in, Xiao Gezi immediately repaired the space, and Chu Ming and the others could take the opportunity to go out.

Unexpectedly, even Chu Ming didn't expect that Hantan "snored" and entered the space when it was repaired to the critical point, and Xiao Gezi, who was injured by the shock wave, gritted his teeth and repaired completely, and fell into a coma.

That's all... The second big killer of the male protagonist, successfully arrived!

Lin Qianqian supported his chin, and couldn't figure out what she was looking at...... Is it genuine?

Could it be that she is too irresponsible as a reader? Or is her arrival a butterfly effect?

Glancing at the apprentice meditating at the foot of the bed.

Lin Qianqian, who couldn't think clearly, simply didn't want to, the mysterious power on his body, the man in black who chased and killed the male protagonist, the deviation of the plot (maybe)... She's a no-brainer.

In the modern society of rapid development and fast life, the death of her parents is also a matter of necessity, if she does not use her brain and does not work hard, then she can only eat steamed buns and pickles every day!

And the sad thing is not that you don't have good food, but the sad thing is that you have eaten good food but you don't have the money to buy it!

So go for it!

Born to live, Lin Qianqian lives to eat the most, she has a wish to become the vice president, that is, to eat all the Chengdu food, it's a pity.

shouldn't push away those annual leaves, just to be the vice president, you can go to Chengdu for a month or two.

Thinking of this, I couldn't help but sigh.

It's been almost a year since I've been here, Mom... 's sacrifice day is also coming, and I don't know if I can go back when she dies, bah bah, oh my god I didn't mean that!

Don't take it seriously!

PS: Equal pressure must be in equilibrium, but being in equilibrium does not necessarily mean equal pressure!