The classes to be held in the classroom today are also over.
Qin Luoheng and others restored the room to its original state, and then began to pack up their things. After packing up the things they would use when returning home, they were ready to go home.
Qin Luoheng has nothing to bring.
Just two volumes of slips.
He stood up and prepared to leave.
Lang stopped and shouted:
"Brother Qin, I may have to wait two days to give you the Qin half liang stipulated in the deed. Recently, my father is busy catching robbers and will not return home for a while. I hope Brother Qin can give it a few more days."
Lang was a little embarrassed.
Qin Luoheng waved his hand and won the deed, and said with a smile. "I'm not in a hurry to use the money for a while. I'll give it to you whenever you have money."
"As long as the deed is here, you don't dare to default on it."
Lang chuckled.
"That is."
"I'm not a deadbeat."
"By the way, Brother Qin's class tomorrow is arithmetic, so remember to bring your arithmetic chips."
"But arithmetic, I guess you're pretty bad at it."
"Anyway, I am a person who has never failed in arithmetic. Now I am confused in arithmetic. I don't know how to move those sticks at all. Moreover, Ling Shi also taught some singing skills before. You should have never heard of them before. Now
It’s going to be a little hard to keep up.”
"Bless yourself."
"I certainly can't help you with arithmetic."
"If you really find it difficult, go find Fen. Before that kid went to school, he ran in the market with his father every day, and he could do the math very quickly."
"I've been running around since I was a kid, so why am I not fast?"
"His mother is also a maid!"
Lang muttered a few words, cursed and walked away.
Qin Luoheng was a little dumbfounded.
He actually wasn't worried about his arithmetic.
No matter what, he had received compulsory education, and his basic mathematics was still up to standard. The arithmetic of this period was far less complicated than that of later generations.
It’s just that there are no numbers in this era.
If you want to learn arithmetic well, you must learn arithmetic!
When the Master was still alive, he taught him some things about planning.
What is calculation?
It is a tool used to record numbers, list equations, and perform calculations on various numbers and equations.
And China has always used the decimal system.
When he heard this information, he was a little surprised.
Perhaps in the eyes of later generations, it is natural to use the decimal system for counting, but in the pre-Qin period, the decimal system was the greatest creation in the history of world mathematics.
none of them!
When China began to use the decimal system, ancient Rome was using the heptimal system, and ancient Babylon was using the sexagesimal system. Although ancient Egypt used the decimal system, it did not know the place value system.
The place value system means that the number represented by a number depends on its position.
In the pre-Qin period, the ancients knew zero.
Precisely because China was the first country to use decimal notation and recognize the carry system, China has been the most advanced country in mathematics for a long time.
He asked his wife.
Why do we use decimal?
The master was stunned for a moment, then stretched out his hands and said with a smile: "Have you ever heard of a word called "counting on one's fingers?"
In the eyes of the ancients, it was natural to use the decimal system.
But they didn't know that what they thought was right took the West thousands of years to understand.
The decimal system was completely established during the Shang Dynasty.
The counting methods have also developed step by step from the most primitive "numbering by writing", "tying ropes to count things" and "engraving wood to record things" to the "calculation" that appeared in the Spring and Autumn Period.
With Master's explanation, Qin Luoheng also understood the origin of the calculation.
Calculation has already appeared in the pre-Qin period, and has been mentioned in books such as "Yi Zhou Shu", "Chu Ci", "Dialect" and other books. However, there was no unified regulation for calculation at that time, and they were basically made of tree branches.
, bamboo branches, thatch and the like.
With the unification of the Qin Dynasty, weights and measures were also unified.
Naturally, calculations are also included.
Qin's law stipulates: 'The calculation uses bamboo, one minute in diameter, six inches long, and two hundred and seventy-one pieces are used to form six gu (gu), which is one grip.'
but.
The Qin Dynasty focused on practicality.
Therefore, the basis of classroom teaching is also to explain practical problems.
Fangtian, millet, shaifen, shaoguang, etc.
Qin Luoheng learned arithmetic, but when he first learned it, he lamented his own ignorance and stupidity many times, and also lamented the wisdom and intelligence of the sages many times.
Qin Luoheng then smiled and said:
"Lao Tzu said: Those who are good at counting do not need to plan."
"When I was learning how to calculate money, I was often slapped with "chikao" by my master."
"The other students in the school have no foundation at all now. When they learn addition, subtraction, multiplication, division and the four arithmetic operations, I can already foresee the wailing in the school."
"Anyone in the world who can learn mathematics well is a genius."
"This is a wise saying!"
Qin Luoheng came back to his senses and stopped thinking about tomorrow's arithmetic class. He picked up the things he had packed, turned around and left the school room.
It's already dark.
He carried his baggage and walked home.
By the time we got back to our residence, it was completely dark.
Bo Shu was waiting at the door early to welcome him home.
"How was your studies today, Master?"
"I once heard someone say when I was in the city that the courses in the school are more onerous than the Six Arts of Confucianism. It is not something ordinary people can understand. But with the knowledge of the young master, I think you will not encounter any difficulties." Seeing Qin Luoheng,
Bo Shu hurriedly came up to greet him.
Qin Luoheng shook his head and said:
"You said it wrong."
"There is no real difference between what the school teaches and what Confucianism teaches, but Confucianism pays more attention to benevolence and etiquette, while the school pays more attention to law and practicality."
"Both have the same purpose but different approaches."
"It's been cold recently, and you haven't fully recovered yet. There's no need to wait for me outside. If you catch a cold, I'm afraid the root cause of the disease will be left, and it won't be cured in a short while."
"Come inside."
Qin Luoheng entered the house. He put the baggage he had brought back on the table and went directly to the kitchen without resting.
After a day of classes, he was also hungry.
Confucianism teaches that a gentleman stays far away from the kitchen.
Taoism has no such concept at all.
"Zhuangzi: The Master of Health Preservation" says: "My life also has a limit, and knowledge has no limit. If there is a limit, it will follow the limitless, and that's it! He who has become a knower is gone! There is no near name for good deeds, and there is no near punishment for evil deeds.
. Yuan Du believes that sutra can protect one's body, improve one's life, support one's relatives, and extend one's life.'
In the eyes of Taoism, people should develop in accordance with the laws of things and the changes in nature.
When people are hungry, they need to eat.
What Confucians call distant chefs is completely hypocritical.
Not seeing because of not seeing.
From the Taoist point of view, everything is the same, there is no difference, and it does not really exist just because you don’t see it.
Entering the kitchen, Qin Luoheng shook his head when he looked at the sudden appearance of several bundles of branches.
Bo Shu said nervously: "I have nothing to do today, so I went out to collect some firewood. I didn't go too far, it was just near the house. I just wanted to do something within my ability to repay you."
Talking and talking.
Bo Shu's voice was as loud as a mosquito.
Qin Luoheng said:
"I don't need you to repay me."
"Do you know what I learned in class today?"
"In Da Qin, it is the duty of every Qin person to act bravely when they see justice. It is my duty to save you. You don't need to apply Confucian ideas."