How did you, a prisoner on death row, become an important weapon of the country? Yecheng Gao Weiming

Climb a mountain of swords and plunge into a sea of ​​fire?

Translated into English, it means climbing a mountain full of knives and swimming in a sea full of fire.

This made Anna from the Russian bear look confused.

Is it because I am not good at English?

What does this mean?

Zhang Lianhai on the side continued: "Haha, Anna, don't be surprised."

"Climbing mountains of swords and diving into seas of fire is a national characteristic of our Dragon Country and also a long-standing proverb."

"This phrase is generally used to describe steadfast love and the strength of brotherly friendship."

"For example, I can go through fire and water for you, and Huang Feifeng can also go through fire and water for me, and even stab me in the back!"

Huang Feifeng looked annoyed when he heard this.

Lian Haier, ah Lian Haier.

It's already this late and you're still thinking about picking up girls.

Do you think I would go through fire and water for you and stick my neck out for you?

I can stab you twice.

But he also knew that Zhang Lianhai was just giving Anna a metaphor to help her understand the Longguo allusion more quickly.

So, he also explained: "Anna! Lian Hai is right."

"At the same time, walking on a mountain of swords and diving into a sea of ​​fire is also a traditional skill of our ethnic minority in Longguo."

"In Yunnan Province in the southwest, most of the Lisu and Miao people have this skill."

"They can quickly climb up this ladder made of knives, and walk barefoot across the charcoal-covered road without any harm..."

As he spoke of this, Huang Feifeng's eyes became brighter.

He looked at Zhang Lianhai: "Lianhai, how did you come up with this idea? It's really almost the same. Could it be that the person who designed this challenge is a Dragon countryman?"

The smile on Zhang Lianhai's face faded and his tone became gloomy.

"You two, have you forgotten Doctor Qin, Qin Wenjing, whom I met yesterday? He is a top researcher at Bell Labs. I suspect this forum has something to do with him."

Qin Wenjing?

It's him?

When Huang Feifeng and Yao Fei heard Zhang Lianhai mention this person, they both showed a strange look, but they quickly returned to normal.

"Ha! Now that we know that it is our Dragon Country's way of going through fire and water, it will be easier to deal with it."

Yao Fei said: "Since this is the most normal performance program in Yun Province, there must be a way to crack it."

"Lian Hai, now that you've recognized it, how do you break it?"

Yao Fei’s meaning is very simple.

Do you know how to climb a 15-meter ladder without getting hurt, or how to take a platinum ring out of molten steel?

Unfortunately, this question brought a bitter smile from Zhang Lianhai.

Stop it, sister!

The three of us are all from Northeast China!

I’ve only seen the performance on TV or on my phone, so how the hell do I know how to break the impasse?

Moreover, that kind of performance has a high artistic component, so who knows whether it is real or not?

If there were people from Yun Province present, they would probably be able to find a way out of the situation as soon as possible.

"Hmm... no tricks?"

Seeing Zhang Lianhai's appearance, Yao Fei sighed.

She looked at her boyfriend Huang Feifeng again, and he also shook his head.

The girl had no choice but to hug her slender waist with her left hand, support her chin with her right hand, and talk to herself while looking at the device in front of her.

"Did you notice that?"

"Since this is a physics forum, they have set up this outrageous challenge session."

"Then the organizers will definitely test our knowledge of physics."

"Climbing up a knife mountain...climbing up a knife ladder barefoot...could it be that the test is about knowledge of pressure and stress..."

When she said this, Zhang Lianhai's eyes lit up and he interrupted excitedly.

"Yes! Yao Fei, you are right. Since you are stepping on a steel knife, it must involve knowledge of mechanics."

"Wait! I thought it also involves the tensile and shear forces of the tool, and even the van der Waals forces."

Zhang Lianhai's words made the other three people's eyes light up.

Mechanics!

Great mechanics.

You are all top students majoring in physics and elite talents in this industry.

Naturally, we know what pressure, stress, shear force, tensile force, and even van der Waals force are.

Some things don't need much explanation, just a little bit will make you understand.

What did you realize?

You know, it is impossible to climb a 15-meter knife ladder barefoot without getting injured.

Perhaps, your feet will bleed just by stepping on them.

Why don't the Miao and Su people get hurt?

Perhaps it is because they have developed thick calluses on their feet after years of practice, and they are not afraid of blades.

But even though everyone does not have calluses on their feet, if they understand the principle of knife cutting, they may have a chance of successfully challenging it.

Therefore, if we break the problem down and analyze it, it will become simpler and simpler.

What is the cutting principle of the knife?

The ability of a knife to cut objects is not due to its sharp blade, but to its brute force in breaking the molecular bonds that bind the matter together.

What do you mean?

Simply put, when we use a knife to cut an apple.

First, apply downward pressure with the knife to force the molecules in the apple skin to open to both sides.

When it is opened to a certain extent, slide the knife to apply shearing and tensile forces to the apple.

The molecular bonds in the apple's skin will begin to break because they cannot withstand the application of several forces, and the blade will cut into it, successfully splitting it in half.

The force that holds these molecules together is called van der Waals force, also known as intermolecular force.

Of course, you can also chop it vertically with a knife. It depends on whether the knife is sharp and can squeeze its own molecules into the skin structure of the apple.

If I put it in simpler terms.

Summarize it in one sentence.

Vigorously miracle!

The damage of any object is not caused by the blade cutting off its molecular structure, but by the destruction of the van der Waals force between the molecules.

The molecules will not be easily destroyed, but will be squeezed to the sides, causing fundamental changes in the shape of the object.

"That is to say..."

Huang Feifeng thought of this and said excitedly.

"As long as we apply a certain amount of pressure to the ladder when climbing it, instead of shearing and stretching forces, and calculate and control a certain amount of pressure, we won't get hurt?"

"That's right!"

The other three people said in unison, as if they had found a way to break the ladder of swords.

When climbing it, if you only let the blade act on the soles of your feet, control the appropriate pressure, and never apply shear force and tensile force to it...

There is a good chance that you will pass this challenge successfully.

After all, the van der Waals force within the human body's surface skin is not inferior to that of common fruits such as apples and oranges, and is even much stronger than them.

toughness!

Scientific experiments have proven that the skin is extremely resilient.

Let’s take the simplest example.

A pregnant mother who is pregnant for ten months and is carrying twins or triplets will never have her stomach burst.

The toughness of the skin will keep the baby in the belly safe.

If we express it in human language.

If you want to successfully climb the knife ladder, you just need to find a relatively light person, step on the blade, never move left or right, and always maintain an upward climbing posture, then you may be able to escape unscathed.

After hearing this statement, even the hairy bear man Anna smiled happily.

It seems that even if you pass this Ace of Clubs card challenge, you will only get 1 point in reward, which is not too difficult after all.

Can……

Is it really like that?

After Yao Fei was overjoyed, she couldn't wait to test the results of her inference.

Among the four, she is the lightest and the shortest, probably weighing less than 100 pounds, making her the most suitable person to carry out this test.

But just as Yao Fei was about to move, Huang Feifeng grabbed her.

"Fei Fei, don't worry!"

"Even if you climb up the knife ladder and get the rose on top, but...what should I do?"

"you?"

Yao Fei was stunned, and her heart was shaken when she saw her boyfriend's face full of worry.

How she didn't understand her boyfriend.

The rules of this challenge state that if both parties succeed, both will increase their score by 1 point.

If both sides fail, they are all eliminated.

If one party succeeds and the other fails, the loser will gain 1 point.

Even if I get the rose on the ladder of knives, it will only help Huang Feifeng pass the level smoothly.

But where is he?

How to put your arm into 1700c hot molten steel and successfully get a platinum ring?

Even if you dare to put your hand in, how can you possibly get it out?

If he fails, it means I will fail.

There is no need to think too much about the consequences of failure, as the boyfriend has naturally considered this.

This is……

Both sides suffer losses!

Yao Fei forced an ugly smile.

"Hey, this... Let me try to see if I can climb up the knife ladder first, and we can talk about this later!"

As she said this, the girl was about to walk towards the ladder of swords again.

"no!"

Huang Feifeng stood firmly in front of her.

"Fei Fei, I will never allow you to climb the knife ladder until this problem is clarified."

"Fei Feng..."

Yao Fei looked at her boyfriend in a daze and threw herself into his arms.

"Feifei..."

Loyal love!

Perhaps, the real purpose of this Ace of Clubs card challenge is to test whether the love between lovers is loyal!

amount……

But watching the two of them hugging made Zhang Lianhai behind them look disgusted.

Depend on!

It's already this late, and you still have the mind to flirt?

This is nonsense!

Dayun-san, please, can you kill them for me?

"Um... maybe, I... I have a way to successfully get the platinum ring without getting hurt."

Unexpectedly, Anna, who had been silent all this time, suddenly spoke up, interrupting the couple.

Swish!

The three of them turned around immediately.

Anna, do you have any idea?