It took a lot of effort for Jia Rui to come up with this trick, where would he give up easily.

"Two girls, I came up with this trick after a lot of thought. You are obedient and I will explain. ”

"Don't listen, don't listen."

Miaoyu covered her ears.

Dead girl, if you don't listen to me, you won't say it, I can't help you.

"First, when it comes to arithmetic, only the two of you are the best. Don't forget, I taught you in the first place. I am your husband. ”

"Now that Sir is in trouble, you can't stand idly by, can you?"

"Second, the prison students and doctors of arithmetic in Guozijian have always been above the top, and there is no one in their eyes. Now it is time to break this myth and let them know that there are people outside the heavens. ”

"Third, those businessmen are desperate and forced to hang themselves, don't you have a little compassion? It is said to be a competition, but in fact, it is to help collect debts and accumulate good deeds. ”

"Fourth, you two are talented, don't you want to take this opportunity to show your talents?"

"This time, I'm really desperate, that's why I'm asking for your help. If you don't help me, I won't have the face to see anyone in the future. ”

"Both of you are beautiful women, not only kind-hearted, but also beautiful, beautiful and wise."

"I'm only a shallow learner, and I'm not a descendant of the house, I'm purely a disadvantaged group, you say I don't ask you for help, who else can I find?"

Jia Rui began to sell miserably, saying that he couldn't survive as if he couldn't live.

Daiyu was soft-hearted, so she shook first.

"Miaoyu, Brother Rui is pitiful, it's really not good, let's help him."

"It's not that I won't help, if we show our stuffing, our reputation will ...... in the future."

"Miaoyu, you don't have to worry about this. Even if others really know, they will only praise you, saying that you understand the righteousness and help the need......y. ”

Jia Rui used the Carnegie motivation method, and it was another compliment.

"Alas, seeing that you are pitiful, I will help you once. Okay, that's it. If you encounter this in the future, don't look for us. ”

"Okay, just this one. By the way, I'll teach you again in the next two days. For example, plane geometry, solid geometry, area, volume, etc. ”

"What is this? Don't understand? ”

Daiyu was confused.

"It doesn't matter if you don't understand, I can teach you."

"What's the use of these things you're talking about?"

Miaoyu asked.

"It's very useful. For example, how many buckets of grain can this grain hoard hold? You don't need to measure it bucket by bucket, you can calculate it. ”

"And this arithmetic?"

Miaoyu was also interested.

"Yes, for example, this clay pot containing water, I don't need to weigh it, I can calculate how many catties of water there are."

"No, I don't believe it."

Miaoyu pouted.

"Brother Rui, why don't you try it now?"

Daiyu proposed.

Hey, little girl, I'm just waiting for you to say this, just to show your skills.

Jia Rui went back to find a ruler and began to measure the clay pot.

It is a cylindrical clay pot with a measured diameter and a measured height. I found pen and paper. Prepare the calculations.

"Qingwen, you can also listen to it and learn together."

Not only Qingwen came over, but also Zijuan, Snow Goose, Golden Ring, and Silver Ring also came to listen.

They had also learned from Jia Rui before, and now they often do some calculations with their masters.

It's just that because I don't have any motivation, and I don't like Qingwen, I often apply it practically, and I always ask Jia Rui for advice, so I'm not as good as Qingwen.

"This one is called a cylinder, and it can be seen as a circular column. Such a circle is called the perimeter. Measured from the mouth, this is called the diameter. From the center of the circle to the edges, this is called the radius, half the diameter. ……”

"To measure how many catties of water there are is is to measure the volume. There is a formula, which is to multiply the base area by the height. ”

"High, I already know, how to find the bottom area? is the square of the radius, multiplied by the pie. What is pie, it is a number, just remember this number, no matter when and where, it is this number, and it will never change. ”

Jia Rui calculated and explained at the same time, and found the volume.

"The specific gravity of water is 1. At this time, you can convert the first pound of water. ”

The reason why there is a saying "the first catty" is because the current catty is one catty and sixteen taels, not one catty and ten taels in his previous life. In the middle, it has to be converted, and finally the current number of catties is obtained.

"This jar of water is twelve catties and six taels, and there is no difference between one or two up and down."

The girls looked at each other and were skeptical.

"Jinhuan, you get the scales. Weigh it to know if it's right. ”

Jin Huan quickly brought the scale, weighed it first with the water jar, and then poured out the water and weighed the jar.

The number of catties in front, minus the catties of the jar, is the number of catties of water.

A few people counted and were all surprised.

"It's really twelve pounds and six taels, the lord is simply a god."

Qingwen looked at Jia Rui's gaze, and she was a little admired and proud.

"That's really the case, Brother Rui, you teach us again, I didn't remember it all just now."

Daiyu was immediately in high spirits.

"Yes, teach it again, no, twice, no, until it's done."

Miaoyu is also a studious, and after learning this, when she sees others in the future, she will appear to be superior.

Seeing that their interest had been aroused, Jia Rui readily agreed.

"Zijuan, you go and tell Wang Rong and them to go back, and tell the house. Miss Lin has been studying here for the past two days. ”

Miaoyu thought it through.

"Miss......."

"Just tell him so, tell him to tell his ancestors, don't worry about me."

Daiyu spoke, and Zijuan went out to make arrangements.

In addition to the students of the Daitoku Empire, there were also students from the vassal states of Daitoku and some neighboring countries.

For example, Ryukyu, Siam, Champong, Silla, Tamna, Dongying, etc. There were more than 10,000 students, including gentlemen and handymen.

These people come in and out every day, and there are always people at the gate.

At about midnight, a team of soldiers and horses came over, and several people carried a big sign and stood at the gate of the Guozijian.

And the people gathered around them.

"What? Challenge the book! ”

As soon as everyone saw the title, they were immediately attracted and eagerly read it.

The gist of the challenge is that in order to recover the payment for the goods for the city households of the East Fourth Archway, the commander of the Dongcheng Terracotta Division decided to challenge the Guozijian.

Since Guozijian is a literati, he will challenge two things.

One is to test poetry, and the other is to test arithmetic.

The poems are directed by the Dongcheng Terracotta Division, and the arithmetic is performed by the three maids who command the envoys.

If the Dongcheng Terracotta Division loses, the money owed by the Guozijian to the city households will not be wanted.

If the country loses, he will have to repay the money with interest.

Let's ask the place where literati gather, whether Guozijian, the hometown of poetry and books, dares to fight?

If he didn't dare to fight, Guozijian would worship the Dongcheng Soldiers and Horses Division as his teacher.

"A bold fanatic, a small soldier and horse division, dares to challenge the Guozijian?"

"I don't know how thick the sky is, a martial artist, how dare you challenge us saint disciples?"

"There is no one in sight, and you dare to let the maid come to compete with us? What are you doing with our country? ”

"Who is this commander of the Dongcheng Terracotta Division? Such an ignorant and arrogant person can be a commander? Am I no one? ”

One stone stirred up a thousand waves, and the students of Guozijian were all indignant.

A martial artist of the Terracotta Division dares to challenge their pride these days, is it tolerable?