Datang: Li Shimin begged me to rebel

Li Yan didn't have any objection to the third brother teaching her mathematics, even though her numeracy was better than their family's accountant, but since the third brother said she wanted to teach, then with the ability of the third brother, it must be a breakthrough in mathematics.

"Yes." So Li Yan agreed very simply.

"Well, let's call Li Xin over too." Li Ke thought for a while, anyway, one sheep is herding, and a group of sheep is also chasing, so it's better to bring them together.

"Okay." Li Yan agreed.

"That's it, Pei Xingjian." Li Ke said loudly.

"The minister is here." Pei Xingjian, who was guarding outside the account, quickly walked in.

"Go to the house of Deputy Chief Guard Li, and then invite Miss Li Xin to come over and tell General Li that I want to teach the two of them something." Li Ke said.

"Yes!" Pei Xingjian turned and left after saluting.

Li Daozong who got the news naturally would not stop him, and Li Xin naturally followed Pei Xingjian back with curiosity on his face.

After Pei Xingjian left here, Li Daozong found Mrs. Li: "Madam, what do you mean..."

"What are you worried about?" Mrs. Li glanced at Li Daozong.

"I'm just afraid that His Highness will take a fancy to them..." Li Daozong hesitated for a moment, but he said it directly. Of course, he knew the beauty of his two daughters.

"They happen to be in the fifth service, and they haven't released the fifth service. What are you thinking?" Mrs. Li rolled her eyes at Li Daozong. "Zhou Li" does not match, and Datang is almost the same as "Zhou Li" in this respect.

"Yan'er is not. There was something wrong with her yesterday." Li Daozong muttered. As an old father, although the ancients did not have a small cotton-padded jacket, most of them were patriarchal. In fact, in wealthy families, because There is no shortage of money and other aspects, and there are many people who like their daughters.

Although they still adhere to the ancient concept of marriage, this does not conflict with liking daughters.Every old father who marries his daughter is always complicated.

"Even if it's true, wouldn't that be a good thing? One day, you can use a pretext to ask the Li family of Zhao County to adopt Yan'er as a foster daughter, and everything will be settled." Mrs. Li thought far enough.

"Hey, forget it, I'm going to patrol, ma'am, wait for them to come back and you can find out more." Li Daozong said helplessly.

"I see." Mrs. Li nodded.

Li Xin followed Pei Xingjian to Li Ke's place, and found that her sister was also there. She knew that her sister was coming, but she didn't know why His Highness asked her to come.

"Xin'er has met my brother." When Li Xin saw Li Ke, she hurriedly saluted him.

"Just call me third brother from now on." Li Ke waved his hand.

Li Xin hurriedly agreed, and then looked at her sister without moving her eyes.My sister has inquired that His Royal Highness has three meals a day, oh, or the entire Chihai area has three meals a day, because of the workers who do the work.

So my sister came here just for lunch, and it took only more than an hour before and after, so the relationship has changed?What did the sister tell her brother?

"The third brother called you here. It was your sister who said that she wanted to learn from the third brother. I will bring you along with me. I will teach you mathematics from today, that is, numerology." Li Ke said, what Li Yan said to her, Li Yan Of course Ke couldn't say it.

"Okay." Li Xin will not refuse to learn things, even if she has mastered "Zhoubi Suanjing", "Nine Chapters of Suanshu", "Sea Island Suanjing", "Five Cao Suanjing", "Sun Tzu Suanjing" Sutra", "Five Classics of Arithmetic", "Jigu Suanjing", "Zhushu", "Shushu Jiyi".

"Come, come, I'll send you textbooks first." Li Ke asked Yang Anning to take out the textbooks prepared for them. Speaking of mathematics, Li Ke was the first to teach it. He started teaching these a few years ago. Yue Almost all the shopkeepers, accountants, etc. who come to the firm have mastered modern Arabic numerals. As for this world, let's call it Li Ke's numerals.

Although it is said that it has been invented now, it has not actually formed a unified and complete standard. Around 700 AD, the Arabs conquered India, absorbed the local part of the numbers, and then optimized and disseminated it, and finally became the modern Arabic numerals.

But this world is different. The figures of this world have already spread to Arabia and other regions through Yuelai Trading Company.

In fact, it doesn’t matter who invented it first. Anyway, Li Ke has sorted out some of the modern mathematics. At the beginning, he sorted it out by himself. When he found the underground library some time ago, Li Ke found a complete set of mathematics textbooks.

This is much simpler. After rearranging and printing these mathematics textbooks, Li Ke took them out. From now on, he will be the treasurer of Yuelai Commercial Bank and a must-learn course for accountants.

"Primary school textbook? What do you mean?" Li Xin took the math textbook in his hand and asked in a daze.

"It's the elementary school textbook." Li Ke said with a smile.

"Ah?" Li Xin was speechless. I have basically finished learning the books of arithmetic. You want me to learn elementary school?

"Some of the problems here may not be easy for you to solve." Li Ke said with a smile.

"I don't believe it." Li Xin obviously didn't believe it.

"Then you do this." Li Ke turned the textbook to the back and found a fifth-grade example problem.This set of math textbooks is the latest. To be honest, after working for many years, Li Ke turned to these latest math problems in the fifth grade of primary school, which are relatively difficult. He sometimes doubted his life.

Although he has worked for many years, he has indeed returned a lot of math to the teacher, but is this a fifth grade topic?Are you afraid you are kidding me?It's not that Li Ke underestimated ancient mathematics, it's just that he thinks that Li Xin can solve this problem, but it may not be so easy to solve it.

Not only that, but in this set of mathematics textbooks, Li Ke found a complete set of modern abacus textbooks from the library and added them.

There were no calculators in ancient times, but abacus calculations are not bad at all. After all, many of the data of our first atomic bomb were typed out by abacus!It's that awesome.

Li Xin was dumbfounded after reading the question. Is this an elementary question?A pair of twins eat milk candy and fruit candy, how many days they eat alone, and how many days they eat together.What are these?

Li Xin read the question carefully several times, and she had several algorithms in her mind, but they were not very accurate, and she always found it difficult.

"Third brother, are you sure this is Mengxue?" Li Xin was not well.

"Of course, this is Mengxue. In the school I am going to open soon, these are all basic teaching. Oh, yes, there are also the letters and pinyin, which are improved by me. You should follow along and learn." Li Ke will The elementary school textbooks of Chinese were also taken out. These are all the textbooks he compiled and will be taught in the Royal Academy in the future.

Right now, let’s start with the two of them first, but they are just learning pinyin and letters. Many characters in modern mathematics have special meanings. Li Ke feels that he doesn’t have the ability to change it into a complete ancient version, so that’s it. Bar!

As for the letter issue, what's wrong with this thing?Isn't it your own if you take it from someone else?