"What's your name?"

The middle-aged man in the crowd quickly came out, respectfully bowed to Li Yang, and replied: "Return to the Prime Minister of the Central Committee, Zhang Cang is here."

"Zhang Cang?"

When Li Yang heard this name, he frowned and felt that the name was very familiar.

After thinking about it carefully, I suddenly felt a whisper and was shocked. Could this person be Zhang Cang, a calendar scientist in the Western Han Dynasty?

Thinking of this, Li Yang quickly confirmed: "You are the Zhang Cang, the disciple of Li Si, who is under Xunzi. I understand calendar and calculation?"

Zhang Cang looked at Li Yang in surprise and immediately replied: "I really learned from the Prime Minister of the Central Committee. I really understand a little bit about calendar and mathematics."

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

Today I found a treasure!

No wonder this guy can calculate the multiplication of three digits in a mental way. The person in front of him turned out to be Zhang Cang, a famous astronomical calendarist and mathematician of this era!

Regarding Zhang Cang, Li Yang still vaguely saw records about him in history books. He studied under Xunzi and was from the same school as Li Si, Han Fei and others. He was a prime minister and a caucasian in the early Western Han Dynasty.

Zhang Cang is a very knowledgeable and knowledgeable person. He has made great achievements in calendar and mathematical science. He formulated legislation and weights and measures for the Western Han Dynasty. His side-corrected "Nine Chapters of Arithmetic" is a major contribution to the development of mathematics in China and the world. These algorithms are more than 1,500 years earlier than similar algorithms in Europe and have had an important impact on the development of world mathematics.

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

At the same time, "Nine Chapters of Arithmetic" has its unique achievements in mathematics. It not only mentioned the problem of fractions at the earliest, but also recorded problems such as insufficient profits. The "Equation" chapter also elaborated on negative numbers and their addition and subtraction operations for the first time in the history of world mathematics. Its 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 awesome talent in astronomy, calendar and mathematics.

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

Of course it is a talent!

And at present, which talents are the most important and scarce?

Are there military talents? Obviously not. There are not many talents who will lead troops to fight in this era.

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

Are there legal talents? No, the Legalist theory was already carried forward in the Warring States Period.

Is that a craftsman skilled person? No, there are many skilled craftsmen in Shaofu. As long as Li Yang recommends, many handicraft objects can be made.

And in this era, the most scarce and most important thing is actually mathematical talents!

Yes, as a time traveler, Li Yang knows the importance of mathematics very much.

Without mathematics, to put it simply, it is just not understanding calculations, which is very unfavorable in life and business.

To put it bluntly, operations are just 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 and the foundation of disciplines such as physics and chemistry. It even penetrates into any discipline.

Li Yang remembers that Mr. Hua Luogeng, who later generations, once said that the universe is so big, the particles are so small, the speed of rockets, the changes of the earth, the mystery of creatures, and the complexity of daily use, and the inability to leave 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 move human civilization to the door of science...

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

Now that the mathematician is right in front of him, Li Yang naturally got to grab it into the bowl and immediately said: "Mr. Zhang's calendar and calculation skills have been heard of, but I don't know that I have met it here today."

Zhang Cang smiled bitterly: "The Prime Minister of the Central Committee was joking. Compared with the Prime Minister of the Central Committee, I feel ashamed of myself."

Thinking of Li Yang's previous calculation of the arithmetic was just blinking, Zhang Cang still felt like he was dreaming at this time.

How could there be such a fast person in this world?

This is simply unscientific!

Li Yang smiled and said, "Mr. Zhang doesn't have to be too humble. If you are interested in the method of operations, you can communicate and discuss together in the future."

"Oh? Can you really ask the Prime Minister for advice?"

Zhang Cang was stunned and became excited.

He is really fascinated by mathematics.

For example, now, he really wants to know what calculation method Li Yang used to achieve such a quick skill, so he calculated the multiplication arithmetic of the three-digit numbers directly mentally.

Li Yang nodded: "I am very happy to discuss, but now the chaos is in quelling, and I have no time left. But I have something to do, so I want to ask Mr. Zhang for help."

Zhang Cang hurriedly said: "If the Prime Minister has any fault, it's okay to say it."

Li Yang smiled and said, "I know Mr. Zhang is a talented man. At present, there are no leaders in Pei County. I want to ask Mr. Pei County to temporarily serve as the governor of Pei County to help me deal with the chaos and funerals here. I wonder if Mr. is willing?"

This person and Li Si were talents from the same school. Li Yang also vaguely remembered that Zhang Cang in history served as the censor during the Qin Dynasty and was in charge of various documents and archives in the palace. However, he ran away because of his crime, so he later became the prime minister of the Western Han Dynasty.

Therefore, Li Yang temporarily appointed him as the county magistrate of a county, so he was naturally more than enough in ability.

When Zhang Cang heard this, he was stunned. He obviously did not expect Li Yang to be so heavily used by him. He couldn't help but say excitedly: "Thank you, Prime Minister, but... I'm now a crime. I'm afraid... isn't it right?"

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

Zhang Cang said: "To be honest, I was in charge of document files in the palace. Because of Chunyu Yue, I was also implicated, so..."

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

Li Yang thought for a while and said, "Don't worry, you have not been involved in this matter. When I return to the court, I will plead for you to the emperor and avoid your crime."

Zhang Cang was overjoyed, his eyes turned red, and he bowed deeply with gratitude: "Thank you, Prime Minister!"

Li Yang smiled. This is a mathematical talent. He will be arranged in Pei County for the time being. After returning, he will be opened. Then he can consider making Zhang Cang the president of the Academy of Sciences, such as enthroning them as a doctoral student...

The doctoral student first appeared in the Warring States Period. He was an official title, representing knowledgeable and knowledgeable people, and served as an advisor to the emperor. Among the doctors of the Qin Dynasty, many famous people emerged, such as Chunyu Yue, Fu Sheng, Shusun Tong and others, who all left important influences in Chinese history.

Even Li Yang had already thought about Zhang Cang's use, which was to leave him to do things in astronomy, mathematics, and compulsory education.

After getting a mathematical talent, and with the help of Pei County, there were people to deal with it. Li Yang was naturally in a good mood and had no worries. Then he said to Li You: "Issue an order to make meals tomorrow at Mao time, and the entire army will go to Xiaxiang County at Chen time!"

"Here!"
Chapter completed!