Three Kingdoms: I help Liu Bei grow thousands of miles

Chapter 460 New Number
"What did you just say? "Zhoubi Suanjing"?" Lan Tian suddenly sat upright.

"Yes... yes, what's wrong? What's wrong?" Zhao Shuang scratched his head.

"Mr. Junqing knows math?" Lan Tian's tone changed suddenly when he asked.

It stands to reason that Hu Ke would not kidnap people indiscriminately. Mathematics is a very important basic subject in the first three main subjects of Lantian's university. He has been looking for talents in mathematics since Quanling Academy. Whether it is Meng Xuetang or the current Guangzhou Academy, they have never met the conditions for setting up a math department.

There are ready-made textbooks on ancient mathematics such as "Nine Chapters of Arithmetic" and "Zhoubi Suanjing", but it is very difficult to understand without annotations. Although Lan Tian is a graduate student in agriculture, he does not remember much mathematics knowledge due to too long a time, so he wants to learn from memory. It is really difficult to produce a set of mathematics textbooks.

Zhao Shuang nodded slightly, and said a profound word: "I understand."

A little understanding can be divided into two explanations, one is to really understand the superficial, and the other is to be very humble and expressive. Lan Tian intuitively thinks that Zhao Shuang belongs to the latter, and can be said to be able to study "Zhoubi Suanjing" ?

Lan Tian suddenly caught a glimpse of the ledger on the table, so he walked over and flipped through it with his hands in his hands. There were really no regulations in the ledger kept by Wu Sihei, and he felt dizzy after turning two pages.

"Since Mr. Junqing is the accountant, can you help me sort out the accounts of Shuiyue Commercial Bank last month?" Lan Tian asked, pointing to the account book.

Zhao Shuang didn't understand what Lantian meant, how could he make himself sort out the accounts after reviewing them?But he was humble and dared not rebel, so he picked up the account book and started to sort it out.

Lan Tian asked Gao Shun to find Wu Sihei to bring a new account book. After Zhao Shuang listed a few items, he began to do mental calculations, and then kept filling numbers in the account book.

The main positioning of Shuiyue Commercial Bank is to connect with Hu Ke of Jianye, so it sells the products of Jiaozhi and Nanhai to Jiangdong, and purchases basic materials such as rice and meat to sell back to Guangzhou. The scale and volume are far from comparable to ordinary commercial banks, and the number of accounts in a month is large Up to thousands.

Zhao Shuang took it easy and sorted out the accounts page by page. In less than half an hour, he finished sorting out the accounts of the previous month. When he handed them over to Lan Tian, ​​he felt very puzzled. The profit is less than [-]%.

He lamented that the Yue people are honest and honest, and they know how to make small profits but sell quickly when doing business. Han merchants would definitely not do this, after all, the risk of long-distance shipping is quite high.

Lan Tian picked up the old and new ledgers and compared them, and found that Zhao Shuang was indeed a skilled accountant. He was able to sort out the messy ledgers without using auxiliary tools in such a short period of time, which showed his mental arithmetic ability.

Looking at the numbers on the account book, Lan Tian frowned suddenly, thinking that although the records in Chinese characters are accurate, writing and calculating are very complicated.

Seeing Lantian's solemn expression, Zhao Shuang asked himself that he was right, so he folded his hands and asked cautiously, "Dare to ask Fujun, is the grassroots calculation wrong?"

Lan Tian shook his head, "Mr. Junqing is really good at numerology, but it's not convenient to use this number to calculate and record."

"It's been like this since ancient times. Could it be that the lord has other methods?" Zhao Shuang asked in surprise.

Lan Tian picked up a pen and wrote down the characters from zero to ninety on the account book, then marked them with Arabic numerals, and finally pointed to the row of Arabic numerals and said, "Let's use simple symbols instead."

"What's the point?" Zhao Shuang wondered even more.

Lan Tian smiled slightly, "Let's use an example to calculate and you will understand."

Lan Tian tore off two sheets of paper, first wrote in capital letters on one: 14 seven, 390 three, and then wrote it in Arabic numerals on the other sheet.

"Sir, do the math with me?" Lan Tian handed Zhao Shuang the paper with capital letters.

Zhao Shuang is not as good as you as an official in mental arithmetic. Calculation is my specialty. He started to calculate as soon as he got the question sheet, and within a few breaths he began to write the answer.

Lan Tian wrote with him almost at the same time, but Arabic numerals are convenient after all, so when he finished writing 232130, Zhao Shuang's answer was not half finished.

"Ah, here." Zhao Shuang stopped writing to look at Lan Tian's answer, and it was exactly the same as the answer in his heart. He then bowed his hands and saluted, "Fu Jun is so good at mental arithmetic, Shuang feels ashamed."

Lan Tian smiled and replied: "It's not that I'm better at numeracy than you, but it's actually this set of symbols and calculations. If you don't believe me, let's try again?"

"Eh, respect is worse than obedience"

Faced with the temptation of calculation fun, Zhao Shuang even forgot his own situation, and after several calculations, he discovered the magic of the new numbers.

After Zhao Shuang came back to his senses, he was actually grateful to Wu Sihei. If the other party hadn't forcibly tied him to Guangzhou, he might never have access to this knowledge in his life.

"Your Majesty gave me a sudden insight. I don't know if this set of symbols has a name?" Zhao Shuang admired Lan Tian very much.

"Uh, let's call it Xinshu."

Lan Tian remembered that Arabic numerals were created in India and were finally spread by the Arabs. He really didn't know the specific author. At this time, he could only admit ambiguously, because he planned to take out abacus after the popularity of numerology.

Woodblock printing and movable type printing have been requisitioned, and adding an abacus will make it painless. Lan Tian believes that it is for the benefit of all mankind anyway, so it doesn’t matter if it’s earlier or later. Poetry, I should be relatively restrained.

"What a new number, it will definitely promote the progress of number skills." Zhao Shuang looked very excited.

Lan Tian saw that the preparation was not too far behind, so he said meaningfully: "Shuiyue Trading Company kidnaps good people privately, and I will definitely punish them severely."

Zhao Shuang hastily pleaded: "Shuiyue Trading Co., Ltd. operates with integrity, and from the accounts, it has not competed with the people for profit. The shopkeeper Wu Si is just seeking talent and thirsty. The method is wrong. He has taken good care of me along the way. I have decided to be the accountant here. , please don’t, my lord.”

"Junqing is so kind. I think Mr. is a master of numerology. It's a pity to be a mere accountant. Are you going to return to Jiangdong?" Lan Tian asked with a smile.

"Because my family is in decline and I have an old mother, wife and children to take care of, I have to work as a accountant. The shopkeeper Wusi promised to give me five times the wages."

After Zhao Shuang finished speaking, he lowered his head. It is said that he should be a scholar, but in the face of the pressure of life, he can only bend his waist for five buckets of rice. The other party's offer is too high.

"But what about your wife, children and mother?" Lan Tian asked again.

Zhao Shuang choked up and said, "I can only ask the shopkeeper of Wusi to pick it up for me, and the cost will be deducted from my wages."

Lan Tian shook his head, "It's a pity that the cow chews peonies. How about I hire you to Guangzhou Academy with the same salary? I only need to be responsible for annotating classics of mathematics such as "Zhou Bi Suan Jing" and "Nine Chapters of Suan Shu", and teach young students knowledge of numeracy."

"Guangzhou Academy?"

Zhao Shuang had heard this name before, and the Jiangdong family despised the existence of it, but the other party's salary was so high that he was allowed to do what he liked, and the joy was instantly filled.

"Are you willing?" Lan Tian asked again.

(End of this chapter)