Northern Song Dynasty: Starting from the son of Song Renzong

Chapter 28: He does feel a bit like a child prodigy
Zhao Zhen also found it a bit funny to see Zhao Xin rejecting him with such pride.

Then I had to say: "Okay! Tell me, what benefit do you want?"

In fact, Zhao Xin was just saying it casually.

But since his father has already said this.

Then he could only think carefully about what kind of benefits he could get next, which would be most beneficial to him.

Zhao Xin frowned and looked at the roof. He thought for a long time before saying, "I'll do whatever I want in the future!"

Zhao Zhen said, "That won't work."

Because Zhao Zhen understood that if he agreed, he would definitely say that he wanted to learn how to fight.

Zhao Xin said, "Forget it, I don't want anything. Madam Miao, let's continue studying and ignore him."

He said he was reading.

In fact, it was Madam Miao who read to him.

Fortunately, Mrs. Miao has nothing to do, otherwise, other parents might not be able to do this.

Zhao Zhen had no choice but to say, "Except for learning how to fight and going to fight, everything else is fine."

Zhao Xin said, "You said so. Then go ahead and take the test! By the way! No matter what Fu Bi, Zhang Fangping, or anyone else says, you can't do anything about it, Dad!"

"And... you have to tell them that Zui Xinglai is a genius and can't be treated as an ordinary child."

Zhao Zhen said, "Okay! But... you have to answer all the questions I ask."

In order to prevent him from cheating, Zhao Xin also asked him to come up with all the questions and write them down on paper.

He asked Madam Miao to testify, and then began to answer the questions.

Because Zhao Xin understood that if it was a verbal conversation, then by then, his father would find out that he was too amazing. In order to avoid agreeing to his conditions, he might deliberately ask very difficult questions that Zhao Xin would never be able to answer correctly with his level.

For example, if he were given a problem asking him to calculate the Pythagorean theorem, he might not be able to do it.

Don't tell me yet...

When Zhao Zhen was giving questions later, he actually planned to give Zhao Xin a question about the Pythagorean theorem.

Fortunately, he finally found his conscience and just gave Zhao Xin a simple linear equation with four variables.

to be frank!
Zhao Zhen didn't think Zhao Xin could really figure it out.

For this kind of math problems, let alone Zhao Xin, even ordinary adults would have to use counting sticks to calculate carefully.

Unless you are an exceptional person and are extremely good at mental arithmetic, that’s another matter.

After Zhao Xin got the question, he returned to Miao Niangzi's arms, and then...

I only needed to take a quick glance at the previous questions and I could finish them in seconds!
As for the last linear equation of four variables, he had to calculate it briefly with a pen.

Immediately afterwards...

He climbed up onto the desk with great vigor and agility, and ground the ink himself.

Madam Miao seemed afraid that he would fall, so she immediately asked the servants to come forward to help.

They even became the left and right protectors, standing directly on both sides of Zhao Xin.

After grinding the ink, Zhao Xin began to calculate: five sheep + four dogs + three chickens + two rabbits = one thousand four hundred and ninety-six.

In this way, a total of four formulas are listed.

Next…

It just slowly eliminates the origin.

Zhao Xin was calm and composed, not at all confused, and the steps he wrote were extremely clear.

It’s this word. I guess I need to practice it more.

It only took a moment. Zhao Xin even checked it twice to avoid mistakes. Then he told Zhao Zhen the answers to every question.

There is no need to say much about the previous part.

They are all very simple questions.

As for the last question, Zhao Xin said, "The sheep is 170 coins, the dog is 120 coins, the chicken is 20 coins, and the rabbit is 30 coins. I am right!"

Since the question was asked by Zhao Zhen, naturally, he already had the answer in his mind.

When I heard the four numbers, they were exactly the same as what I had set at the beginning.

Now Zhao Zhen, who was originally lying on the bed, leaning against the table on the bed listening to the answer, could no longer sit still.

"It's really figured out!"

After Zhao Zhen finished speaking, he quickly stood up, walked ten steps to the desk, picked up the draft written by Zhao Xin and started to read it.

Even though Zhao Zhen had never seen such a calculation method, the content was very easy to understand. Basically, anyone who was literate and had a certain level of logical ability could understand it.

You can roughly guess what is written on it.

This is a method of calculation that is similar to counting chips, but not exactly the same.

and……

It is obvious that the calculation method used by Zhao Xin is much easier to understand than using counting rods.

Because if you use counting rods, which is the method used in the "Nine Chapters on the Mathematical Art", as an ordinary person, you may not be able to master it without at least half a day of learning, and you also need a teacher to guide you and explain it to you.

however……

Zhao Xin's method is clear and easy to understand, and much simpler.

But Zhao Zhen still had some questions.

That is, how did Zhao Xin know that by doing this, he could figure out the answer.

He also asked, "Did your teacher teach you this method?"

can only say……

This possibility cannot be ruled out.

after all……

Who knows if Yan Shu has any hidden tricks?

Throughout history, many officials are said to have the ability to remember everything they see.

In addition to the fact that some people are born this way, there are definitely some people who are trained to do so using some shorthand methods.

However, these training methods would never be told to others if the children were not from one’s own family.

That's the only explanation.

otherwise……

How could Zui Xinglai be so fortunate to come up with such a brilliant calculation method?

Zhao Xin said, "This is what I thought of!"

After saying this, his face didn't even blush.

Zhao Zhen frowned slightly, not quite convinced, and said, "You thought of that?"

Zhao Xin replied: "Otherwise, the teacher doesn't know this either."

Zhao Zhen asked, "Then how did you come up with this idea?"

Zhao Xin said: "That's easy. Just pretend that I know how much everything is worth, and then sort them out."

"Then... just see how to solve it."

"At first glance, if we can use the upper part and subtract the lower part, then it will be easy to calculate."

"So how can we use the upper part to subtract the lower part? If we keep thinking like this, the method will come out."

"I have used it to calculate most of the problems in this book, and I have never made a mistake."

“When I compared the answers, they were all correct!”

"Daddy, you lose! So next, I can do whatever I want! You guys can't control me!"

Looking at Zhao Xin jumping and jumping, Zhao Zhen also realized that he was careless.

He should come up with another question related to Pythagorean theorem later.

At least……

I have to get a square root for him, otherwise it might be difficult for Zhao Xin to figure it out.

but……

Don't tell me yet!

Zui Xinglai does have a bit of a child prodigy vibe to him.

After all, let’s ask…

Who can know this method?

Even if it was placed in the Imperial College or the Imperial Academy, no one would have thought of it.

Immediately afterwards...

He caught Zhao Xin and asked him to explain in detail how he came up with each step.

(End of this chapter)