Because he himself was also the most famous mathematician in the late Qin and early Han dynasties.

"Your Highness, you still have some research on arithmetic?"

Zhang Cang looked at Ying Changsheng in front of him and couldn't help but say.

"I can't talk about research, just a little understanding, it's better to do this, you just come up with a few questions, I'll solve a little more difficult, don't use addition, subtraction, multiplication and division, this kind of low-difficulty arithmetic problem to embarrass this Miyazawa!"

Win Changsheng pretended to be extremely forced to say.

Well, for a time-traveler who travels to the pre-Qin period.

Historical knowledge, the history of the pre-Qin period is too far away, and I probably can't remember it clearly.

And there is a good chance that it has been tampered with!

The complex formulas of physics, as well as chemistry, are enough to give people a headache.

And that point of middle and high school.

No one cares at all.

I will memorize by heart, and it is nothing more than coping with the exam.

So this thing doesn't come in handy, and there's only one thing that can be of great use when it comes through it, and that's math.

The reason is simple, math is a thing that is often used in daily life.

So for Win Changsheng.

His knowledge of math is pretty good.

"Then I'll give His Highness a more difficult question!"

After saying this, Zhang Cang began to talk about the topic.

The questions he raised were indeed more difficult.

It is a math problem that primary school students often have a headache, that is, chickens and rabbits in the same cage.

Such a mathematical problem has been solved in the present era.

Zhang Cang knew how to solve it.

But so what?

In Zhang Cang's opinion.

This is a difficult problem that he pondered for a long time before he figured out the solution.

It's enough to give Ying Changsheng a headache for a long time.

However, to Zhang Cang's surprise, after Ying Changsheng heard his question, he immediately showed a contemptuous expression, as if the question Zhang Cang had just raised was very simple.

I saw that Win Changsheng waved his big hand and said to the palace maid next to him.

"Get pen and ink!"

"No!"

The palace maid went to prepare the pen and ink.

Zhang Liang on the side also stretched out his hand.

"Get me a copy too!"

Well, Zhang Liang also became very interested in this issue.

At the moment, I would like to try to explain this problem.

The pen and paper were quickly taken over, Zhang Liang and Ying Changsheng began to answer, while Zhang Cang sat at the table, looking at the two.

Zhang Liang is obviously educated and has some understanding of mathematics, but this complex equation problem is still relatively difficult for Zhang Liang.

Just like the moment, Zhang Liang scratched his ears and cheeks, but he couldn't think of an answer.

He had to deal with the problem in one way - a little bit of blindness.

Keep assuming the data until you can match the numbers in the question.

Unlike Zhang Liang's side, winning Changsheng seems to be very easy, isn't it just an equation?

Something that I learned in elementary school in the future!

For those who have undergone nine years of compulsory education.

It couldn't be easier!

It's easy to do!

I saw that Win Changsheng was skilled, and according to the method in his memory, he listed the equations on the paper, and then began to solve the problem with Arabic numerals.

And the process of winning Changsheng's problem solving, in Zhang Cang's eyes, is simply nonsense!

Well, absolute nonsense.

The reason is simple.

Zhang Cang couldn't understand it at all, and he couldn't understand the equations listed by Win Changsheng, and he couldn't understand the numbers written by Win Changsheng.

In his eyes, this is simply a ghost painting!

But just when Zhang Cang was in his heart, he couldn't help but shake his head, and said in his heart that these nineteen sons are not very capable, and the big words are a set.

Ying Changsheng raised his immature little face and calmly said his answer.

For a while, it was Zhang Cang's turn to be shocked!

However, he immediately felt that this was probably from Win Changsheng.

That's normal, math problems!

Just the answer, not the process.

It's still pretty good.

I only heard Zhang Cang say.

"Your Highness, I'll change the topic again, and you can make this question ......"

Zhang Cang said.

Immediately, the chickens and rabbits were changed to chickens and horses in the same cage! ”

By the way, I changed the numbers a bit.

Then, it is calculated by winning Changsheng.

And Ying Changsheng at this moment, after recalling just now, has a good understanding of this simple equation solving problem, although this data has been changed by Zhang Cang, but directly set the formula calculation, you can calculate the answer.

No, Win Changsheng easily counted the answer in just a few tens of seconds.

Then he replied to Zhang Cang.

And the latter, right now, is still counting there......

Well, this kind of improvised topic.

Zhang Cang himself also needs to go through some calculations before he can figure out the answer.

Listening to the numbers that Ying Changsheng said, Zhang Cang frowned.

"Your Highness, you, you're too fast, aren't you? You, you're talking nonsense, aren't you? This is a matter of learning, and the minister is also proficient, but right now, the minister has just begun, you, how can you be so fast......"

"This is called there is a sky outside the sky, and there are people outside the people!"

Ying Changsheng looked like a dignified elder, and taught Zhang Cang, a big fat man, a lesson.

When the latter heard this, he was not taught a lesson, but couldn't cry or laugh, because although Ying Changsheng had a high status, his age was only a few years old.

And Zhang Cang is already in his forties.

At such an age, I was taught a lesson by a child.

Can Zhang Cang's mood be good?

What's more, he has already decided that Win Changsheng is purely a nonsense number, and it has not been calculated at all.

So, he was silent.

Keep your head down and calculate.

After being busy for a while, Zhang Cang finally calculated the result, just as he was about to say the calculated number.

Zhang Cang suddenly felt that something was wrong, and then, he reacted, isn't this special meow the result of what the nineteenth prince said just now?

Immediately, he raised his head incredulously and looked at the Ying Changsheng who was standing aside, looking at him with interest.

"Your Highness, Your Highness......"

Zhang Cang's lips trembled, and he was speechless for a while.

Zhang Liang on the side didn't care about his abnormality.

At this moment, Zhang Liang is still working hard to write.

He hasn't figured out his first question yet......

"What? Is this boy right? ”

"Your Highness, you, how did you calculate so quickly?"

Zhang Cang came back to his senses from his surprise, and then hurriedly asked.

"It's very simple, because this son is a genius!"

Ying Changsheng said very shamelessly.

"Ben Gongzi is a prodigy, a genius, just a few arithmetic problems, what is the calculation?"

Win Changsheng said disdainfully, Zhang Liang on the side was no longer a problem, he found that no matter how he calculated, the result was not right, and at this moment Zhang Liang looked at Win Changsheng with some embarrassment.

He hasn't even figured out the first question now.

It's really, it's a bit embarrassing.