Daqin started with offering immortal medicine

However, after hearing the two numbers, Li Yang immediately announced the result. This...is simply unbelievable!

It was as if Li Yang could see the answer in advance.

In today's terms, this...is not scientific!

"Mental arithmetic is faster than you!"

Li Yang has no way to explain too much at the moment, so he can only perfunctory for the time being, saying: "Now that the amount of money and food has been calculated, let's send it over as soon as possible!"

"Promise!" The people in the firm glanced at Li Yang as if they had seen a monster, and then hurriedly took the order and left.

At this time, Li Yang waved to the mental arithmetic person in the crowd and asked, "What's your name?"

1 Twenty Chapters Mathematicians

"What's your name?"

The middle-aged man in the crowd hurried out, saluted Li Yang respectfully, and replied: "Return to the Prime Minister, Zhang Cang."

"Zhang Cang?"

Li Yang frowned when he heard the name, faintly feeling that the name was extraordinarily familiar.

Thinking about it carefully, I suddenly groaned and was startled. Could it be that this person is Zhang Cang, a Western Han calendar scholar?

Thinking of this, Li Yang quickly confirmed: "You are Li Sitong's sect, Zhang Cang from Xunzi's sect? Do you know the calendar and arithmetic?"

Zhang Cang glanced at Li Yang in surprise, and immediately replied: "Prime Minister Huizhong, I am indeed a student of Xunzi, and I do know a thing or two about calendars and arithmetic."

Li Yang was excited, and when he heard the other party's answer, his eyes straightened.

This is a treasure found today!

No wonder this guy can calculate three-digit multiplication in his head. The person in front of him is Zhang Cang, a well-known astronomy calendar expert and mathematician in this era!

As for Zhang Cang, Li Yang had vaguely seen records about him in history books. This person studied under Xunzi, the same teacher as Li Si, Han Fei, etc., and was a prime minister and almanacist in the early Western Han Dynasty.

Zhang Cang is very knowledgeable and knowledgeable.He made great achievements in calendar and arithmetic.Made legislation and weights and measures for the Western Han Dynasty.The "Nine Chapters of Arithmetic" that he corrected is a major contribution to the development of mathematics in China and the world. These algorithms are more than 1500 years earlier than similar algorithms in Europe, and have had an important impact on the development of mathematics in the world.

"Nine Chapters of Arithmetic" is a monograph on mathematics written by Zhang Cang and Geng Shouchang in ancient China.Its content is very rich, and the whole book summarizes the mathematical achievements of the Warring States, Qin, and Han Dynasties.

At the same time, "Nine Chapters of Arithmetic" also has its own unique achievements in mathematics. It not only mentioned the problem of fractions for the first time, but also recorded problems such as surplus and deficiency. The chapter "Equations" also expounded negative numbers and their addition and subtraction for the first time in the history of mathematics in the world. algorithm.It is a comprehensive historical work and the most concise and effective applied mathematics in the world at that time. Its appearance marks the formation of a complete system of ancient Chinese mathematics.

In short, Zhang Cang is a very talented person in astronomy, calendar and mathematics.

For Li Yang, what is most lacking in this era?

Of course it is talent!

And right now, who is the most important talent?most scarce?

Military talent?Obviously not, there are not many talents who can lead troops to fight in this era.

Political talents?Not to mention, there are many people who understand government affairs in the court.

Legal talent?No, Legalism had already been developed in the Warring States Period.

Is that artisan skill talent?No, there are many skilled craftsmen who will be in the Shaofu. As long as Li Yang advises, many handicraft objects can be made.

In this era, the most scarce and most important thing is actually mathematics talent!

Yes, as a traveler, Li Yang knows the importance of mathematics too well.

Without mathematics, at a young age, you just don't know how to calculate, which is very disadvantageous in life and business.

On a larger scale, calculation is only one of the most basic functions of mathematics. In fact, mathematics is the cornerstone of scientific and technological progress.

It is the mother of disciplines, the foundation of physics, chemistry and other disciplines, and it even penetrates into any discipline.

Li Yang remembered that the later Mr. Hua Luogeng once said that the universe is so big, the particles are so small, the speed of rockets, the changes of the earth, the mysteries of biology, and the complexity of daily use, cannot be separated from mathematics.

In a word, daily life, economy, science, astronomy... Even particles are all inseparable from mathematics.

Only when the knowledge of mathematics is rapidly developed and popularized, can this society truly progress and human civilization move towards the gate of science...

It was precisely because of this that Li Yang was so excited when he heard this person's name.

Now, this mathematician is right in front of his eyes, Li Yang naturally had to grab the bowl, and immediately said: "Mr. Zhang is talented in calendar and calculation, I have heard about it for a long time, but I don't know how to meet him here today."

Zhang Cang smiled bitterly: "Prime Minister Zhong was joking, in terms of computing power, compared with Prime Minister Zhong, I really feel ashamed."

Thinking that Li Yang's calculation before was done in the blink of an eye, Zhang Cang still felt like a dream.

In this world, how can there be someone who can count so fast?

This is simply unscientific!

Li Yang said with a smile: "Mr. Zhang, there is no need to be overly modest. If you are interested in the calculation method, you can discuss it together in the future."

"Oh? Can I really ask Prime Minister Zhong for advice?"

Zhang Cang was taken aback for a moment, and his whole body became excited.

He is really fascinated by mathematics.

Just like now, he really wants to know what kind of calculation method Li Yang used to be able to calculate the three-digit multiplication directly in his mind so fast.

Li Yang nodded: "The truth is very willing to discuss, but now that the chaos is under control, the truth has no time. But the truth has something to do, and I want to ask Mr. Zhang for help."

Zhang Cang hurriedly said: "If there is something wrong with the Prime Minister, it's okay to say it."

Li Yang smiled: "I know that Mr. Zhang is a great talent, and there is no leader in Peixian County right now. I would like to ask Mr. to temporarily serve as the sheriff of Peijun to help him deal with the chaos here. I wonder if Mr. is willing?"

This person and Li Si are talents from the same school, and Li Yang still vaguely remembered that Zhang Cang in history, in the Qin Dynasty, he had served as the censor and was in charge of various documents and files in the palace.It's just that he ran away because he committed a crime, so he later became the prime minister of the Western Han Dynasty.

Therefore, for Li Yang to temporarily appoint him as the sheriff of any county, his ability is naturally more than enough.

Zhang Cang was taken aback when he heard this, apparently he didn't expect that Li Yang would use him so much, he couldn't help but excitedly said: "Prime Minister Xie, it's just... now that I'm wearing a crime, let me be the county guard, I'm afraid... it's inappropriate Bar?"

Li Yang asked: "What crime did Mr. Zhang commit?"

Zhang Cang said: "To be honest, I was in charge of documents and files in the palace back then. Because of Chun Yuyue, I was also implicated, so..."

When Li Yang heard this, he suddenly realized that it was because of the Confucian abuse. To be precise, it was a political incident caused by Chunyu Yue's group of Confucian scholars who opposed Qin Shihuang's prefecture and county system.

Li Yang thought for a while, then said: "Don't worry about this, you didn't participate in this matter, when I return to the court, I will intercede with the emperor for you, and spare you the crime."

Zhang Cang was overjoyed, his eyes were red, and he cupped his hands in tears of gratitude and bowed deeply: "Thank you, Prime Minister Zhong!"