The days when I fished in Daming

Nine Chapters on the Mathematical Art, as the name suggests, consists of nine chapters that require a high school level of knowledge to master.

Not to mention the advanced versions left behind by the ancients.

It looks difficult, and it is actually quite difficult.

Fortunately, Zheng Xiong had attended high school, otherwise I would not have dared to set such a difficult question.

Don’t be afraid of ten thousand, just be afraid of what happens.

If there are two people who want to embarrass me by giving me a difficult question, I will be really at a loss.

So Zhu Biao brought it up out of curiosity.

"Does the doctor have any unique insights into arithmetic?"

"I've learned a little bit, but I'm not proficient in it. But I can still come up with some questions."

Seeing Zheng Xiong's confident look, Zhu Biao became interested.

For some people, science is like a mystery.

Some people have different talents for this.

Most people would calculate that one plus one might equal three.

They can never make a mistake when they add one plus one.

This is talent, you can’t deny it.

Obviously, Zhu Biao is this kind of person.

As the future executive vice emperor of the Ming Dynasty, he naturally received top-notch education.

The same is true for one's own talents.

Such a big country can be managed in an orderly manner and not be fooled by others.

Naturally, his abilities in all aspects are extremely outstanding.

Even if he had not received specific instruction, the mathematical knowledge he learned in his daily life was enough to educate Zhu Biao to the level of high school.

And Zhu Biao was very interested in this.

His eyes lit up and he was eager to try it.

"I like the chicken-and-rabbit-in-the-cage question the most. I wonder if the doctor has done one."

"necessary."

"Oh, Doctor Hou, are you interested in discussing this?"

Although his talents are extraordinary, his ideas for solving problems are also unconventional.

But I have no interest at all.

That is the fear of being dominated by mathematics.

Just because I enjoy making up questions doesn’t mean I enjoy solving them.

The discussion raised by Zhu Biao was like a ferocious beast to Zheng Xiong. He was so scared that he waved his hands repeatedly and quickly changed the subject.

"Your Highness, there is plenty of time for discussion. It is already getting late. I will take Your Highness to some other place. We can talk about this later."

"I have finished looking at the playground. It will take some time to walk to the palace in the distance. Let's talk while we walk."

After saying this, he didn't give Zheng Xiong a chance to argue and walked away alone.

A group of people followed closely behind.

Zheng Xiong was distracted for a moment, then quickly followed.

"Chickens and rabbits are in the same cage. There are 20 heads and 46 legs. There are a few chickens and rabbits."

Covering his head, Zheng Xiong's dual quad-core and eight-core brain processors were running at high speed.

The answer was given within eight steps.

"There are three rabbits and seventeen chickens."

"So fast, and the answer is correct. I thought it would take a while for the doctor to calculate. I really underestimated the doctor. Let's try again."

"Forehead!"

"There are chickens and rabbits in the same cage. There are 20 heads and 56 feet. How many rabbits are there?"

Wipe, wipe, wipe!!!
Zheng Xiong covered his dizzy head, feeling terrified and confused.

Despite this, his brain was powerful and he still gave the answer within eight steps.

"Eight."

"As expected, it's not difficult for the Medical Lord. The Medical Lord has solved two problems. Now the Medical Lord will also give one. Let's compete with each other."

Zheng Xiong's eyes lit up, and he no longer felt dizzy or blurry.

"There are 18 animals in total, spiders, dragonflies, and cicadas, with a total of 118 legs and 20 pairs of wings (spider has 8 legs; dragonfly has 6 legs and 6 pairs of wings; cicada has legs and pair of wings). How many dragonflies are there?"

I thought it was a normal question, simply testing chickens and rabbits in the same cage, but I didn't expect Zheng Xiong to come up with a modified question.

Are you totally unprepared?

Zhu Biao asked again in confusion.

"Please tell me again, Doctor."

"There are 18 animals in total, spiders, dragonflies, and cicadas, with a total of 118 legs and 20 pairs of wings (spider has 8 legs; dragonfly has 6 legs and 6 pairs of wings; cicada has legs and pair of wings). How many dragonflies are there?"

Satisfy you.

Zheng Xiong repeated it again with a secretly pleased look on his face.

Seeing Zhu Biao's extremely happy expression, Zheng Xiong restrained himself a little, unable to show it.

But that faint smile can never disappear.

At this moment, Zhu Biao looked confused and fell into the same misunderstanding that many people would fall into.

That is rigid thinking.

It’s the same puzzle of chickens and rabbits in the same cage. No matter how difficult it is, Zhu Biao can solve it.

But this change caused Zhu Biao's brain to crash on the spot.

Perhaps if we give Zhu Biao enough time to react, the problem can be solved.

But right now there is not enough time to react.

When he reached the door of a temple, he walked in silently without even realizing it.

"Your Highness, this is a residence built for students to stay."

A gentle call called Zhu Biao out of the world of spiders, dragonflies and cicadas.

But still confused, he only responded once.

"Not bad."

After walking around, Zhu Biao finally broke away from the influence of spiders, dragonflies and cicadas, and then he took a closer look.

There is a room with four beds, including single beds on the upper and lower floors on both sides.

A desk was placed near the door, with pens, ink, paper and inkstone fully prepared.

The bedding was neatly folded on the bed.

Commonly used tools such as wooden basins and wooden barrels are also arranged, including daily necessities such as cloth towels.

After coming in, one feels like one can just pack up and move in, without having to worry about anything else.

After taking a careful look, Zhu Biao walked into the inner room.

He first tried the pen, ink, paper and inkstone, then walked to the bed beside him and sat down to feel it.

The linen sheets are a little cool.

After I sat down, I heard some slight noises from inside.

When I opened it, I found that it was filled with straw and licorice.

Zhu Biao frowned slightly, then reached for the quilt.

This time the feeling is different, the quilt is a little softer.

"What's in here made of?"

"Reed and willow catkins."

"Is it a little thin? It doesn't feel very warm."

Zheng Xiong was also helpless.

If possible, Zheng Xiong would also like to arrange a quilt, but unfortunately the conditions do not allow it.

First of all, the output. The output of cotton fabrics has not been high before the Ming Dynasty. Although the textile technology was improved in the Yuan Dynasty, the output is the biggest reality.

If we want to increase production, it has to be Lao Zhu who can do it, I can't do it myself.

"These are already better than most people's. If you want to be even warmer, I know of something that is very effective in keeping out the cold."

"What?"

"cotton."

Zhu Biao nodded.

“Cotton is really good.”

He said this, then seemed to have thought of something and could only shake his head helplessly.

“It’s just that the production is too low.”

"The low yield means less planting. If others can't see the benefits of planting this thing, they will naturally not plant it."

"What advice do you have for me, Doctor?"

It seemed that after hearing that Zheng Xiong had a solution, Zhu Biao became somewhat expectant.

"Of course, that's through inducement."

"Why?"

"The cotton is good. My Yingtian Prefecture can buy it. We will accept all who come. As long as the news spreads, I believe many people will plant it."

Zhu Biao's face was full of suspicion and disbelief.

"How much are you prepared to pay for it?"

"Five hundred coins a pound."

The price Zheng Xiong mentioned seemed to be about the same, but Zhu Biao just shook his head.

"This price is not enough to lure him in."

"How about one or two?"

"It's light, so after deducting taxes, there's not much left. Transportation and food are also big expenses. I'm afraid one or two ounces won't seduce anyone."

(End of this chapter)