Kan Ze's ability is outstanding, and it is self-evident that Cheng Dù, who is valued in Wu State, so Ma Guorong can't suppress the excitement in his heart after the successful addition of Kan Ze, although his fame may not be as famous as Zhou Yu and Lu Xun as the top leaders of Eastern Wu, but his importance cannot be questioned.

"Brother Guorong, in Xia Kan Zezi Derun, there are some things to ask you a thing or two, if there is any offense, look at Haihan." Kan Ze is worthy of being a humble and respectful person, and he is so polite to modern people like Ma Guorong, he is not as rude as Ma Zhong, and he is not like Wu Fan who puts himself in a high position, Kan Ze communicates with Ma Guorong as an equal.

"This is the humble scholar of the Three Kingdoms period?" Kan Ze was not born in a famous family, he belonged to a poor family, so he also developed some modest character, which played a very important role in his future work, which may be one of the reasons why Sun Quan attached importance to him.

Ma Guorong looked flattered, and hurriedly replied: "Mr. Kan Ze is polite, as long as I understand, I will definitely know everything and say everything." "In ancient times, Mr. was an honorific title for scholars, and this title was Ma Guorong's respect for Kan Ze, which was not inappropriate, but in modern times, Mr. was only a man, and the meaning of the honorific title of teacher gradually faded.

"Okay, then I'll be blunt, what is this?" Kan Ze sent a message over, and then attached a picture, Ma Guorong looked at it, it turned out that this was the list of raw materials behind the spicy strip packaging bag, which marked where the added things were and how much they were.

"Spicy strip packaging bag, does Mr. Kan Ze have a soft spot for spicy strips? If that's the case, how about I send you a box of spicy strips privately? "With Kan Ze's status, it is normal to get the spicy strips presented by Sun Shangxiang, and the side of Kan Ze's picture packaging bag, not the front, what is the purpose of this?

"No, I want to ask what are the numbers in the picture? It seems to be different from our numbers, yes, those strange numbers of mobile phone numbers, phone numbers, and production license numbers. "It turns out that Kan Ze observed the numbers behind, worthy of being a scholar of mathematics, and immediately identified these as numbers, ancient mathematics is mainly "Nine Chapters of Arithmetic", which is used to refer to arithmetic methods in life, and the words of counting are capitalized numbers, such as one, two, three, etc., and this number, Kan Ze in the Three Kingdoms period has never seen it, why? Because Arabic numerals were created by ancient Indians around the 3rd and 4th centuries AD, that is to say, in Kan Ze's time, Arabic numerals had just been invented, and if they were introduced to China, the time could be estimated to about the 14th century.

"These are Arabic numerals, which are internationally accepted in modern times, and they are much easier to calculate." After Ma Guorong finished speaking, Kan Ze said very curiously: "Arabic numerals? Invented by the Arabs? ”

"No, it was invented by the ancient Indians, whether it was the Arabs who first spread to Europe and then to China." Ma Guorong patiently explained, and then told Kan Ze some basic knowledge of Arabic numerals.

"It's amazing, if I had learned Arabic numerals, I would have been able to figure out the dozen digits after pi." After Kan Ze said this, Ma Guorong remembered Zhang Heng and Zu Chongzhi in the Eastern Han Dynasty, it seems that these two ancient scholars have studied pi, Zhang Heng's words, just calculated the last few numbers, and there are some errors, but he was a pioneer in that era.

And Kan Ze's research on pi, not many people know, but when Ma Guorong inquired about the information just now, he found that it was written that Zu Chongzhi's research on pi was indeed borrowed from Kan Ze's research results, and it seems that Kan Ze's achievements in mathematics have reached an extremely amazing Cheng dù.

Ma Guorong's education is only in high school, and if he talks about mathematics with this kind of figure comparable to a professor at a mathematics university, it is not a big knife in front of Guan Gong, so Ma Guorong did not dare to talk about mathematics anymore after exchanging some common sense things with Arabic numerals with Kan Ze, so as not to laugh at it.

"Mr. Kan Ze, if you are so interested in modern mathematics, how about I go to the bookstore and buy you some mathematics textbooks?" Ma Guorong suddenly felt that if Kan Ze started to learn mathematics in elementary school, with his IQ and mathematical attainments, would he be able to achieve what kind of mathematics program?

"Textbooks? Haha, I'm worried that I don't have a place to get this kind of knowledge, and I hope Brother Guorong can buy me more books. Kan Ze is a famous bookworm, when he was young, he was famous for copying books, borrowing other people's books to copy them for his own viewing, and returning the original to others, which not only shows that Kan Ze's family background is not very good, but also extremely good at learning.

Ma Guorong chatted with Kan Ze for a long time, and felt Kan Ze's studious heart, secretly admired, and said: "Sure enough, I live to be old, learn to be old, Kan Ze has seen Arabic numerals in the packaging bag of spicy strips, and then I have learned some modern mathematical knowledge, and I can calculate the number of dozens of digits behind pi by hand. And it was in the period from the end of the Eastern Han Dynasty to the Three Kingdoms period.

Then Ma Guorong drove to the nearest bookstore to buy mathematics textbooks for elementary school, junior high school, high school, and university, and got a cart of mathematics textbooks, planning to give them all to Kan Ze, although he didn't know what he would get, but giving books was still a more literary way to give gifts, and it was a mathematics textbook for life.

So many books, I don't know how much time it takes to read, ordinary people learn so much mathematical knowledge, it takes at least more than 20 years, from primary school to university, whether the results of mathematics can pass are problems, not to mention what to do mathematical research, in their opinion, mathematics has no role at all, because of the popularity of electronic products, so many people are too dependent on computers, so the ability of oral arithmetic and mental arithmetic gradually declines, and the simple mathematical problems of addition, subtraction, multiplication and division are applied in life and work. You also have to take out your mobile phone and open the computer software to make calculations, if you don't have a mobile phone, modern people don't know how to live.

Ma Guorong came to the old place, the time of selection was still ten at night, the waves on the beach hit the shore, Ma Guorong stood on the port, looking at the sea in ink, he was extremely excited, because if he gave Kan Ze a car of math books, he didn't know what reward he would get.

The original cart of spicy strips can be exchanged for the opportunity to repair the bag, but what about a cart of books?