Chapter 407: The Dragon Kingdom is not under the control of Newton [Add two chapters 6200, please order the full version]

After the long-standing memory was touched, Ren Yan was filled with emotions.

But then, he focused his attention on Xu Kai's drawing again:

"Actually, this sail has more than just the advantages Xu Kai just mentioned."

"In addition to the wind coming from all directions and the stable speed, it also has the advantage of safety."

"This construction method similar to blinds can also eliminate the fact that traditional sails are difficult to raise and lower the sail every time."

"As long as we connect the ropes on this sail so that each rope can control a small area, and then converge on the main rope, its lifting and lowering can be completed just by pulling the rope."

"The principle is almost the same as that of blinds. We no longer need to climb up and down."

"And the number of people can also be greatly reduced. Even if it is the main sail, it should be able to cope with all situations with two people operating it."

"So, when we replace this set of sails, the situation where more than 20 people controlled the sails before will probably not happen again."

After saying that, Ren Yan took a deep look at Xu Kai, his eyes full of admiration.

And as he finished speaking, Wang Bo and others were completely petrified. After opening their mouths for a long time, they finally broke out with only one sentence: "the quintessence of the country"

"Fuck."

Only Wang Yu, looking at the sail on Xu Kai's drawing, gradually narrowed his eyes and started his own brainstorming again.

After a while, he sighed with exhaustion, his eyes filled with admiration, but his tone gradually changed:

"It's all fine, but Xu Kai's grandson has such a long brain."

Xu Kai, on the other hand, didn't care about all this at all. After Ren Yan said this, he immediately slapped his thigh and stood up excitedly:

"Teacher Ren, you understand me!"

"Look at my classmates, they actually think I'm just talking nonsense!"

"They helped me make the sail out of a sense of fun, so I had to beg them~"

After saying that, Xu Kai glanced at the classmates from Class 9 with a hint of complaint in his eyes.

Seeing this, Ren Yan nodded seriously and gave a solution:

"That's right, they went too far."

"In that case, why don't you make a sail and slap them in the face?!"

"And if they want to use it later, you can even charge them!"

As soon as these words came out, Xu Kai's eyes suddenly brightened up, while the students from Class 9 beside him immediately glared at Ren Yan:

"Teacher Ren, you are blatantly seeking separatism!"

"We, Class Nine, are a unit, how could you say such a thing?!"

"That's right!"

"You are still charged, is this worthy of the friendship of our classmates~"

Here, a group of classmates complained, but Ren Yan remained unmoved and smiled without responding.

Wang Yu quietly added: "You guys are probably worrying too much."

"Teacher Ren's words are obviously out of joy."

"Since Xu Kai has already done it, he must be on Class 9. Can he really not let us use it?"

"Unless Xu Kai doesn't plan to install it on Class 9."

As soon as these words came out, everyone in Class Nine became dumbfounded, and all rolled their eyes at Ren Yan again:

"Cheap teacher, you have never been a human being!"

At this time, Xu Kai replied sadly: "Humph~ Even if you are on Class 9, you can use it for free."

"But in other aspects, I can still prevent you from using it."

Hearing this, everyone in Class Nine laughed and tried their best not to laugh out loud.

Are you kidding, other than on Class 9, where else can we use this kind of thing?

However, in order to make up for the perfunctory behavior of Xu Kai just now, everyone in Class Nine chose to admit it:

"Yes, yes, the boss is right~"

"Now, can you guys help you make this sail?"

"Don't worry, we will definitely take it seriously this time!"

"Humph, that's pretty much it~" Xu Kai nodded haughtily and began to arrange the work of making sails again.

On the side, Zhang Ting also came to Ren Yan's side, smiling as she watched everyone in Class Nine busy.

She really liked the happy but never annoying atmosphere of Class 9.

This time, with the full assistance of everyone in Class 9, Xu Kai's sail was quickly made.

The difficulty of making this set of sails is not high, it can even be said to be very low.

At the very least it is several dimensions lower than an ordinary triangular sail.

It does not need to consider the magnitude of the wind force, the direction of the wind force, or the effect of the rope on the sail force.

All that is needed is to reproduce the sail exactly according to Xu Kai's design.

It would be a piece of cake for this pair of Class 9 people who have already rubbed many things with their hands, if they hadn't been working in a perfunctory mood before.

They can do such a small thing with their eyes closed.

Fortunately, this attitude has dissipated in the in-depth understanding just now.

Therefore, this new sail system appeared in front of everyone within ten minutes.

Looking at the sail, which was like a blind and looked extremely weak, everyone still inevitably fell into doubt.

"Is this thing really as reliable as Xu Kai and Teacher Ren say?"

Some students picked up the sail with both hands and hesitated to speak.

Others also had a little suspicion in their eyes.

"Hey, does it work? Just give it a try and see if it works?" Li Cheng waved his hand indifferently: "No matter how much you think about it, it's not as effective as practicing it once."

"And this is the first time that there is no need to replace the sail of Class Nine. Anyway, the thing we are making now is not very big. We can just take out a lifeboat from the bottom warehouse and install it to see the effect."

"It just so happens that the weather is bright and clear now, and the sea is calm."

"It makes sense." After hearing this, everyone nodded, then looked at Qingdong, and then shook their heads:

"No, we can't ask Qingdong to do this job. His sailing skills are the best in our class, so he may not be able to see the effect."

"We have to find someone who's not good at sailing~"

Then, everyone turned their attention to Zheng Chen.

As the only guy in Class 9 who seems to be a bit clumsy when driving a boat, this is already the best choice.

Seeing this, Zheng Chen was stunned for a moment, and then he became filled with grief and anger:

"What do you mean by that look in your eyes?"

"Am I as unbearable as you say?!"

"Apologise to me!!"

After saying this, everyone laughed and said nothing, looking at each other intently, with only one meaning: "What do you think~~~"

Seeing everyone's expressions, Zheng Chen immediately wanted to refute, but after thinking about it, he still scratched his head in embarrassment.

It seems that compared to them, I am really good at sailing.

but.

Can food make him listen to his classmates?

Of course you can't~

He has other things to do now!

Thoughts flashed by, Zheng Chen said calmly: "Although theoretically, this matter is better than mine."

"But I can't go yet."

"Such a great opportunity, I have to paint this scene."

"Draw it?" Everyone was stunned.

Zheng Chen nodded affirmatively: "Nonsense!"

"I didn't draw any pictures of yesterday's thunderstorm, and I still regret it now."

"This is such a good opportunity, if I don't let me draw it, my soul as an artist will not agree to it~"

"I think you won't let me be whipped on my soul~"
To be continued...