"Something went wrong with the materials?"

Hearing this, Krell immediately pulled himself out of the entanglement, looked at the Dragon Kingdom students not far away and asked rhetorically.

"yes, there's something wrong with the material." Xu Kai nodded and continued: "In my opinion, there is no problem with your workmanship. ”

"The reason why the airbag can't rush up is simply because you give too much material to the airbag."

"My suggestion is that you should remove two more layers."

"But after removing the two layers, the entire airbag is completely exposed to the inner lining, which not only has the possibility of damage, but also affects the appearance."

"You have to know how hard it is to find an airbag that has the same color as the lining and looks like it's the same."

Hearing this, Krell shook his head noncommittally, ready to continue to study the improvement plan.

But just as he bowed his head, Xu Kai spoke again:

"Now you can't even achieve the most basic use, do you care about any beauty?"

"Are you making this thing for use, or is it for aesthetics?"

As soon as these words came out, Krell paused for a moment.

He found himself feeling like he was really at a dead end.

That's right...

The things you make yourself are mainly for use, is it really that important to be beautiful?

"But it's not like you can't combine beauty and practicality."

"How to combine?!" Hearing this, Krel's eyes lit up, and he walked to Xu Kai's side in three or two steps, staring at each other with burning eyes.

Although he still doesn't know what the origin of this dragon country man is.

But the people Laurie brought in wouldn't have any problems.

And the other party really seems to have two hits?

He's put all his heart and soul into this surfsuit, and it's great that it can be improved now.

"Didn't you mention the safety of exposed airbags?"

"This can really be combined with aesthetics, but the design of your surfsuit may have to be completely torn down."

"The design of your current surfsuit is too slim, and the airbag is completely close to the chest, which will indeed cause unnecessary danger if the material is not up to standard."

"And for the sake of aesthetics, the inflation valve of the airbag is too small, and it is really difficult to inflate under the pressure of the ocean and the constraints of materials."

"So to solve this problem, I suggest you change the position of the inflatable bag."

"Changing places?" Hearing this, Krell hesitated: "Where might it be changed?" ”

"From a scientific point of view, buoyancy devices on the chest are the most effective, and those big-name life jackets are the way to go."

"You said it, it's a life jacket."

"But you're making a surf suit now, so it's not a concept at all, right?"

After begging his master to translate Krel's words for him, Xu Kai replied again in English with difficulty.

He found that his English seemed to be reaching its limit.

After the first few words, it became more and more difficult for him to communicate with the other party.

Too little vocabulary.

Seeing Xu Kai's tangled appearance, Zhang Ting fortunately acted as the translator for the two again.

"And where do you think it's appropriate?" Krell asked.

"Abdomen." Xu Kai replied seriously: "The abdomen is not only located in the same position of the body, but also can accommodate much larger space than the chest cavity, after all, the abdomen does not have hard bones. ”

"But the abdomen, can it really make people float up perfectly?" At this time, Krell still seemed a little hesitant.

even compared his abdomen, revealing a little confusion in his eyes.

This thing is a portable inflatable bag, not a swimming ring, and there is not that much space.

Can the buoyancy of the abdomen alone really keep a person safe when they fall into the sea?

Krell couldn't believe it.

Seeing this, Xu Kai didn't bother to talk nonsense, and directly asked Laurie if he wanted a pen and paper, and found a place to start his own drawing work.

After a while, a simple diagram of the human body was drawn by Xu Kai.

Although he can't draw a picture scroll according to his own feelings like Zheng Chen.

But as the deputy chief designer of the ninth class.

For some ubiquitous object structure drawing, the current Xu Kai is clear.

After drawing it, Xu Kai immediately started to calculate on it.

From the buoyancy required for the standard weight of the human body, the buoyancy generated by carbon dioxide is calculated.

From these two buoyancy calculations, the toughness required for the airbag material is calculated.

To do this, he also assumes a number of variables.

In the end, an answer was reached:

"You see, ergonomically speaking, the inflatable bag on the waist can also play the same buoyant role, and it will not make the human body deviate."

"Although the effect may be a little worse, these can be corrected with materials."

"In this way, the problem of small space can be solved."

"And in the future, you can also make different buoyancy airbags according to different body types, as long as you choose the most suitable airbag for your weight, you can completely get rid of the disadvantages of your current surf suit."

Looking at the dense drawings and formulas in front of me, I listened to Zhang Ting's instant translation.

Krell's mind was full of question marks.

pointed to the picture and pointed to Xu Kai, and said a word for a long time.

In the end, he had to look at Laurie and said blankly:

"Laurie, can you be sure we're not dreaming right now?"

Hearing this, Laurie raised his eyebrows, walked to Krel's side in a few steps, raised his right leg and gave the other party a kick.

He's been trying to kick this for a long time.

Now that the other party has given him a chance, Laurie did not hesitate.

"Oh God, what are you doing?!"

Krell, who was kicked in pain, immediately glared at Laurie.

Laurie shrugged innocently: "Didn't you ask me if I had a dream?" ”

"Now that you can feel the pain, it means you're not dreaming."

"Is there anything wrong with me doing this?"

Hearing this, Krell glared at Laurie: "I can see that you are communiquéing personal vendetta!" ”

Laurie nodded earnestly.

Seeing this, Krell sighed silently, then glanced back at Xu Kai and trembled:

"So here's the problem..."

"Where the hell did you get these freaks!"

"It's only been a long time, and this Dragon Country man has actually completed a whole set of comprehensive questions, and he has also used this comprehensive question to solve a problem."

"Can our lab teachers do that?!"

"He didn't tell me that there was something wrong with my surf suit!"

"In fact, he didn't even see it!"

After making sure that he was not dreaming, Krell dragged out all his doubts.

In fact, the moment Xu Kai finished his calculations, he began to doubt life.

The dragon country man in front of him looked about the same age as himself.

But he easily did what he couldn't do.

These signs all mean one thing, if nothing else, this dragon country man is his mother's superman!

So, at that moment, Krell was confused.

For the first time ever, the world was questioned...

I received an aristocratic education, but when did the Dragon Kingdom also have a noble education?!

Seeing this, Laurie pursed his lips in Class 9, his face full of disdain:

"Hey, look at your never-before-seen appearance."

"Do you understand these guys? Ji Cao~"

"This kind of operation can only be regarded as mediocre among these Dragon Kingdom students, and you haven't seen that person's computing ability~"

Saying that, Laurie naturally patted Wang Yu on the shoulder:

"This brother, if he's in a hurry, he's all mentally arithmetic."

With that, Laurie looked at his best friend with a smile.

I can't feel good in my heart, and I even have a little bit of schadenfreude, and I have honor.

These people themselves knew each other in advance!

In fact, Laurie was not much surprised by Krel's current reaction, but felt normal.

After all, he has seen a lot of this kind of scene during the time he has been on the ninth class.

There are even some more exaggerated operations.

It has long since changed from the shock at the beginning to the numbness now.

But now that he saw that the expression of his best friend was exactly the same as his original self, Laurie felt genuinely happy.

"Maybe this is the so-called dead friend~" Laurie nodded contentedly.

And Krell was stunned.

Looking at the very calm faces in front of him, and then looking at Laurie's arrogant appearance, he knew that Laurie's words were true.

Otherwise, who could have seen this scene so calmly!

Silently, Krell swallowed his throat and his brain began to spin rapidly.

After digesting this explosive information for a while, he grabbed Xu Kai's hand.

With eyes full of affection, he said slowly in a sincere tone: "Brother, do you want to work with me to complete this surfing suit?" ”

"You're half of the results."

"No, you account for seventy percent of the results!"

"I just want to fulfill this dream of mine!"

As he spoke, Krell blinked his eyes in a two-dimensional way.

Xu Kai had goosebumps when he saw it, and without saying a word, he shook off Krel's palm, and then looked at his teacher.

His eyes were full of inquiry.

Seeing this, Ren Yan shrugged his shoulders indifferently, saying that Xu Kai would just decide this issue by himself.

At the same time, he also had a general understanding of this person named Krel.

Judging by his reaction, this man's mind is sharp, at least much better than Laurie's.

Laurie didn't have his reaction.

Moreover, this idea of co-opting resources is also very 'capital'.

However, it is very different from pure capital.

This man is willing to give up most of his interests, which has already removed him from the ranks of 'capital'.

Although I don't know what the future holds, it seems that at least the other party is still a teenager with dreams.

After seeing his teacher's casual attitude, Xu Kai thought for a moment and nodded, he was indeed a little interested in this surfing suit, otherwise it would be impossible to order the other party at that time.

But even so, Xu Kai still put forward a condition:

"It's not impossible to say yes..."

"I have one condition, though."

"On what terms?" Krell hurriedly asked.

"In the future, when we work together, you change your clothes."

"Your outfit is too spicy for your eyes right now."

Saying that, Xu Kai also swept Krel's clothes with disgust.

"Is this outfit ugly? I think it's pretty good~"

Hearing this, Krell hesitated to speak.

Xu Kai immediately refuted: "It's ugly to death." ”

"And it's weird."

"In these years, who will go out in a beautiful girl~"

"Don't you feel ashamed?"

Saying that, Xu Kai also asked a question that everyone in Class 9 was very curious about:

"And... How did you come up with this strange aesthetic? ”

Listening to Xu Kai's complaints and questions, Krell sighed silently, and his eyes gradually became deeper, as if he was reminiscing about the past.

After a long time, he slowly spoke, and there was a vicissitudes in his tone that were completely unequal to his age:

"Back in the day, it was when I was a child."

"At that time, I could still see all kinds of beautiful big sisters on TV and the Internet, and I was gradually completing my aesthetics."

"But years later, I suddenly found that those beautiful big sisters on the Internet and TV were gone..."

"Instead, there are some very chic-looking people, and they don't even see beautiful women in the game anymore."

"I guess at that moment, my aesthetic has changed a little..."

"It wasn't until later that I encountered the second dimension, which was like a beam of light representing beauty, dragging me out of the quagmire before."

"Since then, I have been hopelessly in love with the second dimension."

"It's my salvation~"

"However, since you guys think it's awkward, it's okay if I don't wear it when we work together."

After that, Krell still showed emotion in his eyes, and then he agreed to Xu Kai's request.

But after hearing this short story, everyone in Class 9 looked at Krell sympathetically.

Look at what you've made your child look like.

I'm starting to like paper people!

Unexpectedly, the Stars and Stripes country on the other side of the ocean still has such a dire situation~

On the side, listening to the memories of his dead friend, Laurie also sighed silently.

I felt tired of this situation.

After all, he had to be a victim of this situation.

......

After a period of silence at the scene, Niu Pu took the lead in withdrawing from sympathy, looked at his teacher, and asked:

"That Teacher Ren, it doesn't seem like there's anything wrong with me."

"Can I go out and buy two books first, I'm all trying to solve that puzzle right now."

Hearing this, Ren Yan thought for a moment and nodded: "That's okay, I won't arrange for you if you have something to do yourself." ”

"After buying the book, just go back to the boat yourself."

"Anyway, now that the ships are in civilian ports, we can come and go as we please."

After that, Ren Yan looked at Zhang Ting with some embarrassment.

Zhang Ting immediately understood: "Then I'll go with him." ”

"In Niu Pu's words, I won't be needed here anyway."

"And although this kid can speak some basic terms, his English level is still worrying, and I can have multiple guarantees."

After that, Zhang Ting looked at Niu Pu with a smile: "How is it?" Isn't it welcome for the master to follow you~"

Niu Pu's face turned slightly red: "Then thank you, Master." ”

"Okay, look at your energy, what do you want to say to your sister~" Zhang Ting replied with a smile again.

After saying goodbye to Ren Yan and the others, he took Niu Pu and walked towards the door.

Only a group of Class 9 students were left looking at each other.

They heard it just now, and what their teacher said was that Niu Pu wouldn't assign him a task if he had something to do.

So, according to this statement...

Eighty percent of them have new tasks...

After looking at each other, the remaining Class 9 students immediately changed into an expression of 'sure enough' and looked at Ren Yan fixedly.

"Teacher Ren, let's talk about it~"

"What are you going to let us do?"

After the words fell, Ren Yan didn't bother to sell anything, and said the task he had thought of in the car:

"It's very simple, it's for you to complete a travel guide about Nandel."

"The premise is that you must do it independently, and you must have your own experience."

"This includes, but is not limited to, food, attractions, amusement parks, entertainment centers, and even some customs or quiet trails that you think are good."

"For a period of time, half a month."

"In this half month, you can completely treat yourself as a tourist and explore the city attentively, and all the expenses are paid for by the class fee."

"In other words, it's just eating, drinking, and having fun at public expense, and then sorting out a set of fun experiences."

"Well, do you have faith?"

Hearing this, the students of Class 9 were stunned, with a hint of joy in their eyes, and asked tentatively:

"So we don't need to do anything but have fun during this time?"

"Of course~" Ren Yan nodded: "You can even experience the special hotels here, and it's okay not to return to the ship at night, but you have to report in advance." ”

"And well, you can't enter some places with age restrictions, otherwise don't blame your teachers for being polite."

As he spoke, Ren Yan shook his fist, and there was a crunch sound.

made everyone in Class 9 chill instantly.

The little bit of caution in my heart was immediately worn out.

Originally, they still wanted to let their teachers see how good they were here.

However, now it seems that I am afraid that I still can't do my own teacher~

But even so, they are in a good mood right now.

Fun at public expense, and there are basically no restrictions.

I've been following my own teacher for so long, when have they ever had this kind of treatment!

My own teacher is enlightened at this look!

Although they were a little worried and scared about Laurie's invitation, when it came to Ren Yan, they felt that this was one of the few highlight moments of their teacher.

As for their own depravity?

Just kidding, spending your own class fees, how can it be considered degenerate?!

It's all earned by them!

At the same time, they also know very well that this matter seems to be fun, but after all, there is a mission.

If they don't complete this task, they won't be able to eat and walk around.

This is kind of an insurance hidden by his own teacher.

In fact, it's pretty much the same.

The reason why Ren Yan took the completion of a travel strategy as the task of Class 9 in the Stars and Stripes Country.

There are two main considerations.

The first point is to improve the English of all the people in Class 9.

In the Stars and Stripes, if everyone in Class 9 wants to have a good time, then English must be used at all times.

If you just wander around Chinatown, then this travel guide is basically useless and has no reference value.

Not in Chinatown, whether it's eating food or going to an amusement park, Class 9 needs to use English.

Not only can you speak, but you also have to be able to write and recognize.

With a long time and a relaxed atmosphere, the English skills of Class 9 will definitely be greatly improved, both in speaking and writing.

This method of learning while playing, Ren Yan has long tried and tested.

Moreover, letting Class 9 have fun can also make them more active.

According to Ren Yan's understanding of these little cubs in Class 9, they will definitely seize this opportunity to experience all kinds of things they have never seen or yearn for.

This comes and goes, and the learning effect is directly full.

As for the final strategy, even if it's a summary of their play.

With this thing, Class 9 will not get too carried away with playing, and can even urge them to feel it with their hearts, so that their sense of experience will increase significantly.

It's a win-win!

And the second point was realized by Yan when Class 9 refused Laurie's invitation.

Class 9 has been following him for so long, and although he has developed a good habit of self-sufficiency, he seems to have been a little uncomfortable with spending money to enjoy this.

This is fatal for the current Class 9.

No matter what it is, good or bad, it's always too much.

Ren Yan didn't want it at all, and Class Nine would go further and further on this road of self-sufficiency.

Self-sufficiency is the confidence to face adversity.

But spending the money you earn to enjoy life is also one of life's great joys.

Ren Yan hopes that the students of Class 9 can maintain a balance between the two, endure hardships and enjoy blessings.

I don't want them to slide to any extreme.

For example, this Nandel university may be the extreme of 'pleasure'...

After their teachers swore that they had finished their tasks, everyone in Class 9 suddenly realized a problem.

Then, they looked at the squad leader, Ah Wei.

This kind of fun activity that is completely paid for by the class fee, as the big housekeeper of Class 9, Ah Wei should be very distressed, don't deduct their activity funds when the time comes, if this is really the case, then they will be very passive.

However, as soon as their eyes focused on Ah Wei's body, Ah Wei raised his neck in disdain:

"Hey, who do you look down on~"

"Don't worry, this class fee is enough!"

"My buddy is a person who has learned the new bookkeeping method, and our class fee is more than enough!"

Saying that, Ah Wei also deliberately showed a look that looked at the world.

However, when everyone in Class 9 wanted to cheer for Ah Wei, Ah Wei looked at everyone expectantly and quietly added:

"And..."

"What we're doing this time is a travel guide."

"This thing has really become a commodity, can't it be regarded as a commodity of our ninth class?"

"So, everyone, you must make a perfect strategy as much as possible~"

As soon as these words came out, everyone in Class 9 was speechless, and they pursed their lips in unison: "Huh~~~"

Only Wang Bo's eyes lit up and he kept this in his heart.

Ah Wei is right, this thing, what a good project~

But...

Class 9 is lively here

The two hosts on the side scratched their heads in confusion.

"What do these friends of the Dragon Kingdom say?" Krell looked at Laurie.

Laurie shook his head: "Hen~"

instantly provoked a big roll of the other party's eyes: "That's it, are you embarrassed to say that you have been with them for a long time?" ”

"I don't even know what people say?!"

Hearing this, Laurie looked at Krell dissatisfied: "Nonsense! ”

"Don't you have a point in your heart about how difficult it is to speak dragons?!"

When the words fell, the two sighed in unison.

Not far away, Wang Yu really couldn't stand it anymore, and roughly translated the conversation of Class 9 just now.

He also piggybacked on some of his own opinions on this task.

By the time he had translated it all.

Laurie and the others stood on the spot for a moment, looking at the teachers of these Class 9 students in disbelief.

There was a look of horror in his eyes.

They couldn't figure out how each other's heads looked like.

When will the travel guide be able to play like this?!

Has this group of dragon people learned foreign languages to this level?

But it sounds like it makes sense...

Silently, the two glanced at each other and had a bold idea in their hearts.