As for Liu Yiyi, there is no tension.

couldn't see Shen Bingzhu, Liu Yiyi missed it very much, she couldn't go to visit yet, it was all caused by Kangxi.

Therefore, Liu Yiyi decided to win more pocket money from Kangxi's side.

Although Kangxi can play mahjong, he is obviously not the opponent of Toya and the Queen Mother, who often play mahjong. Especially in the first few games, Kangxi lost the most.

Liu Yiyi won the most!

After playing for a while, Kangxi actually lost all the money Tuya's original.

On the side of other concubines, Kangxi will be let go, but on the side of the Queen Mother, it does not exist. The Queen Mother tried her best to draw cards, and Liu Yiyi was also careful.

Toya doesn't tie much, but she loses less.

The more Kangxi fought, the more he felt that something was wrong, and then looked at Liu Yiyi and the Queen Mother, "Qiqige, are you and the Queen Mother an alliance?" Specially for the Queen Mother and cards! ”

Liu Yiyi chuckled, "I can't talk about forming an alliance, I just used some mathematical methods to estimate it." Qiqige didn't dare to win too much of the silver of the Long Live Lord, but let the Queen Mother win, the Queen Mother was happy, and the Long Live Lord was also happy. ”

The Queen Mother smiled, "Hmph, I almost believed you." I have won more times, but why don't you win less than me? The cards are good every time, and I don't know how you did it. ”

"Calculate." Liu Yiyi replied, "When it comes to complex operations, for a while, Qiqige can't say clearly." ”

Kangxi stopped playing mahjong, then stood up and looked at Li Dequan, "Let's see what these mean?" How is it calculated? ”

After speaking, Li Dequan put the scratch paper that he had copied on the table.

The Queen Mother and Toya also played mahjong for a long time, and now when they hear Kangxi say this, they are also curious and come to take a look.

Liu Yiyi stood up, walked to the kang table, carefully examined these calculations, and immediately understood, "This is the artillery-related data that the seventh elder brother is doing, such an important thing, how can the long live master take it out at will?" ”

When Kangxi heard Liu Yiyi's words, he couldn't cry or laugh, "This thing is very important, but no one can understand this thing." Kikige, can you read it? ”

Liu Yiyi suddenly realized, nodded, and replied modestly: "I know a little bit about it." ”

Kangxi pointed to a math, and then asked, "What does this mean?" ”

Liu Yiyi replied: "This is the principle of parabola......"

Liu Yiyi replied one by one.

This involves algebraic functions, as well as plane geometry, solid geometry, regular, irregular, density of matter, pressure pressure, ......

Kangxi was dizzy when he heard it, some understood, and some didn't understand at all.

Although he couldn't fully understand it, Kangxi felt that these things were very useful in Gewuzhi.

Yinyou and Brother Qiqi seem to use these calculations when they are conducting research on Gewuzhi.

Kangxi looked at Liu Yiyi, and then asked with a solemn expression: "Qiqige, you just tell the truth!" Are these things important in the future? ”

Liu Yiyi nodded without hesitation, "This is the foundation of the development of all natural sciences, and it is very important!" The more you learn, the more you will find that there are infinite wonders, and if you continue to study, you will have more discoveries and rules.

In the future, it will be possible to make larger boats, and it will be possible to make boats that can walk directly in the water, and larger things like birds will fly in the sky...... This requires calculating hydraulics, wind, gravity, and so on... All of this requires a foundation in basic mathematics! ”

The Queen Mother couldn't understand Liu Yiyi's words, but she understood a few of them, "Qiqige, can people really fly in the sky?" ”

Liu Yiyi shook her head, "People can't fly, but they can make something and let it fly in the sky, and if people are in it, it can be regarded as going to the sky!" ”

Kangxi thought for a while, "Is it like a Kong Ming lantern or a kite?" ”

Liu Yiyi thought for a while and replied, "It's a little similar, but it's not!" Of course, this is just speculation, but Kikige believes that human development must not be limited to the ground!

We will not only go to the sky, but also to the deep sea, and we will go to the endless sky and countless stars above us! ”

Tuya blinked, she only listened to the story of Chang'e running to the moon some time ago.

At this time, when she heard a grandfather say that there were stars in the sky, Tuya stared at her eyes and asked, "Qiqige, will we be able to go to the moon one day to see Chang'e?" ”

Liu Yiyi couldn't cry or laugh when she heard this, and the originally dignified topic and atmosphere became relaxed because of Tuya's words.

Liu Yiyi especially wanted to tell Tuya that there is indeed a moon in space, but there is no Chang'e and Jade Rabbit on the moon.

Liu Yiyi said with a smile: "I believe that one day we humans can reach the moon that we can see, but whether there is Chang'e on it or not, I am not sure!"

After all, Chang'e Jade Rabbit is based on the legends of ancient times, and we imagined it ourselves! No one has ever been above the moon, and no one has ever seen Chang'e, so these should be heard as stories, not facts. ”

The Queen Mother also nodded, and looked at Liu Yiyi approvingly, "That's what you said!" A lot of them are folklore, which is very interesting. For example, we have all heard of ghost vixens, but who has ever seen a vixen? ”

Kangxi didn't speak, he was thinking.

Something so important that it can be listed as a separate discipline.

Basic addition, subtraction, multiplication and division, convenient for life and learning.

More advanced content, which can be applied to various aspects.

After a while, Kangxi looked at Liu Yiyi, "Qiqige, are you willing to teach others these new ways of counting yours?" ”

Liu Yiyi nodded, "Of course I do!" I once codified math with the Seventh Brother, and those were the most basic. I believe that Long Live Lord should also know that it is very practical after reading it.

It's just superficial, and there's more, and you won't learn it at all if someone doesn't explain it. If we can disseminate these and let more people conduct research, we can promote the development of mathematics and apply what we have learned. In the process of application, the development of mathematics has been promoted again. ”

Kangxi nodded, "The basic mathematical content, you and Yinyou have already compiled it, and then we will study some complex ones." ”

"Good!" Liu Yiyi replied that since Kangxi confessed, she made it more carefully.

A little change adds up to a big change.

From this day on, Liu Yiyi not only studied her surgical skills, but also began to study mathematics.

How to write those math into a language that you can understand now is easy to think about, but it is a little difficult to do.

However, these difficulties are not a problem for Liu Yiyi. With patience, you can always overcome.

It took four months for Liu Yiyi's junior high school mathematics knowledge to be compiled into two books.