This Mr. Qian is actually the speaker who suggested that Jia Qing be arranged in the Ding class, named Qian Jingrun. Pen ~ fun ~ pavilion www.biquge.info

After everyone has bowed and sat down. He looked around and noticed that there was an extra half-grown teenager in one of the empty seats, and a barely noticeable smile appeared at the corner of his mouth.

It's always coming.

On the first day of class, he asked Jia Qing's name, and was very angry when he learned that he didn't come. For this reason, he also went to Lin Zhongyi and asked Jia Qing to be punished.

Dare to skip class on the first day? That's worth it!

But Lin Zhongyi just told him that Jia Qing had something to ask for leave, but he didn't say anything specific, so he didn't know about Jia Qing's abduction.

Although he had heard something about the events that day, he didn't know what it was, and he didn't care.

"Last time I told you a little bit about the origins of arithmetic and why we should learn it. Today we are going to start learning arithmetic in real life.

Almost half of you are Guozijian who only entered this year, and I know very well that ordinary private schools and even government schools and Zhou schools do not have the subject of arithmetic. So I want to ask you, how many of you don't know how to memorize ninety-nine? ”

Seeing that no one answered, Qian Jingrun continued: "Don't worry, it's normal, it's okay to say it." Later, you can go down and memorize it. ”

Only then did a few people slowly raise their hands.

Qian Jingrun looked at it, there was no Jia Qing! I thought, could it be that this mansion of the public gate actually gave his own children arithmetic enlightenment?

Telling everyone to put down their hands, Qian Jingrun said: "Very good, less than I expected." So which of you would like to recite it for everyone? ”

Familiar people don't want to memorize this pediatric thing, and those who don't know it well are afraid of making mistakes and causing jokes, so you don't need to talk about it if you can't.

No one answered.

"Jia Qing, you can recite it to everyone!"

When Jia Qing heard this, he was instantly stunned. He didn't know what ninety-nine was, but he knew the ninety-nine multiplication table. So he said, "May I ask Mr. Qian, what are you talking about is the ninety-nine multiplication table?" ”

Qian Jingrun was stunned, ninety-nine is the ninety-nine multiplication table, of course he knows. Jiujiu originated in the pre-Qin period and has many names. But today's people are called by ninety-nine, because the beginning of the mantra is the word ninety-nine. Since Jia Qing knows the ninety-nine multiplication table, he should know that ninety-nine is. Jia Qing asked like this, which made him suspect that Jia Qing was teasing him.

"Well~ you have to listen to it on your back."

It is determined that ninety-nine is the multiplication formula, where does Jia Qing not know? Opening:

"One by one, one by one,

One two gets two,

One-three-three,

……”

gradually found out that something was wrong, why did Mr. Qian's face turn black?

"Sir, isn't that right?"

Qian Jingrun looked at Jia Qing's innocent face, and his heart was really angry. Hansheng said: "Stubborn! Give me a good time to stand and reflect on myself! ”

After saying that, he stopped looking at him, turned around and walked back to the case.

Jia Qing was completely stunned at this time, isn't the ninety-nine you said is the multiplication formula, where does the anger come from?

On the other side, a person next to Liu Hong whispered to him: "These children are really bold, and they dare to tease Mr. Qian in person......

Liu Hong didn't know Jia Qing's family background and didn't care. He replied: "It's not clear whether he teases or not, but it's also interesting that he can recite Jiujiu upside down." Kindness? It seems that there is nothing wrong with reciting it upside down......" and then fell into deep thought.

After Qian Jingrun walked back to the case, he said: "This ninety-nine belongs to the basic arithmetic formula, everyone can go down and memorize it, I won't talk about this kind of problem." ”

Then he began to explain arithmetic to the crowd. Although the development of arithmetic in ancient times was suppressed (in fact, it was not only arithmetic), generations of sages still deduced the knowledge of arithmetic to a certain level.

The arithmetic textbook used by Guozijian is the "Nine Chapters of Arithmetic", which was written very early.

About half an hour later, perhaps to enhance his interest in learning arithmetic, Qian Jingrun said: "Chickens and rabbits are placed in the same cage, with a total of thirteen heads and forty-two feet. How many chickens and rabbits are there? ”

After asking for instructions, Liu Hong stood up and replied, "Sir, the student happens to know the solution to this problem. ”

"Tell me about it."

"If there are thirteen chickens in the cage, there should be twenty-six legs. There are forty-two feet, and the extra sixteen feet are all rabbit feet. It can be seen that each rabbit has two feet less, so there are eight rabbits and five chickens. ”

Qian Jingrun nodded with satisfaction and asked, "Where did you find out?" ”

Liu Hongdao: "Shandong Xuezheng University has taught such topics with students......

Qian Jingrun, who was smiling, suddenly caught a glimpse of Jia Qing, who had been standing for half an hour, with a look of disdain on his face. He was even more dissatisfied in his heart, interrupted Liu Hong's words, and said to Jia Qing: "Could it be that you have other opinions?" If you have one, just say it! If you can't tell why, you can stand and listen to the rest of the lessons. ”

Everyone also turned their attention to Jia Qing.

Jia Qing was already dissatisfied in his heart, this surnamed Qian seemed to have an enmity with him, so he stood for half an hour without saying anything, and now he is pulling himself to increase the intensity of the attack...... Hmph, it's time to give you some color and see.

"Mr. Huiqian, the student has a different solution......

Qian Jingrun frowned, suspecting that Jia Qing wanted to tease him again. This problem is a very classic topic, and in their "industry", the method Liu Hong talked about is the orthodox solution. Can Jia Qing know other solutions? How old is he......

However, he still said, "Oh, you can listen to it again, and if you say the right thing, you can sit down." ”

In order to vent his anger, Jia Qing was not polite. Limped to the front, picked up a piece of "chalk" made of lime and water, brushed and brushed down the two equations on the nanmu board next to it, and wrote the answers. I just wrote the unknown letters into Chinese reference characters A and B, and then slowly walked back to my place.

Jia Qing thought that this kind of equation was incomprehensible to others in China in this era. Sure enough, almost all the students showed blank expressions.

Qian Jingrun was also surprised: "At a young age, you actually learned the 'Tianyuan Law'?" ”

Tian Yuan Method? What's that? Look at this posture, this surnamed Qian still knows this equation?

Qian Jingrun carefully calculated, although he didn't have much insight into the Tianyuan Law, he had only read relevant books, but he also knew it, nodded and said: "Although the form is a little weird, there is nothing wrong with thinking about it." However, if you are interested in the 'Tian Yuan Technique', you should take a good look at the books, and you will not get this strange appearance. Tian Yuan is Tian Yuan, what are you doing, what are you doing, that refers to people, but you use it to refer to livestock...... Alright, sit down! ”

Seeing this, Jia Qing knew that he should underestimate the ancients again, this equation should have existed before this era, at least there was this concept.

But his goal has not been achieved, and he has not come out in one breath, how can he be willing to give up?

So Jia Qing continued Qian Jingrun's words and said, "Mr. Qian, the student thinks that your question is not difficult enough. ”

Qian Jingrun was surprised again, and involuntarily asked, "It's not difficult enough?" ”

Liu Hong below was also taken aback when he heard this, and then he was a little dissatisfied. He is a typical scholar of this era, and he respects teachers the most! Jia Qing's move was to lose Mr. Qian's face......

Let's hope he's just messing around and can't say anything.

Jia Qingcai doesn't care so much, this surnamed Qian is prejudiced against himself for no reason, and he also physically punishes himself, how can he be worthy of his slightly sore leg without a bad breath......