Chapter 32 Find out the Arabic numerals!

Author: March

Chapter 32 Find out the Arabic numerals!

Ji Cheng wanted to inquire about his brother's situation, but Lantian Camp was a military camp and could not be approached easily.

Jicheng is just a small person, and his position is only a pavilion chief. How can he easily enter the Lantian Camp?

The grandfather and grandson discussed it for a long time before finally paying attention.

Ji Changnai was a veteran of the Chu campaign, having experienced Li Xin's campaign and Wang Jian's campaign successively.

Ji Chang served in Wang Jian's army due to his outstanding personal abilities.

In Che Lin, there were many old soldiers who attacked Chu like Ji Chang.

Several of them even drove for Prince Che, Wang Jian. Well... although they were co-drivers, they could still be regarded as personal soldiers.

"I once served in Chehou's camp, Sheng, Sun, and I used to drive for Chehou. My eldest father went to ask if we could meet..." Ji Chang hunched over and spoke.

Sheng and Sun are lonely old people in the village.

The heirs died in the war, the daughter-in-law remarried, and she could no longer have children. All in all, only the old man was left in the family.

It is not uncommon for them to be like this in this era. After the Qin Dynasty destroyed the six kingdoms, the war never stopped. It conquered the Xiongnu in the north and conquered Baiyue in the south.

There were losses and losses in the process, and the pace of Qin's expansion was paved by the soldiers who served in the army.

This is the case for Sheng and Sun. The child died on the battlefield, and he was unable to have more children, so he had no choice but to cut off his heirs.

However, both of them were men of meritorious service in the war against Chu. Their titles were not changed until the fourth level, so they were exempted from corvee service. They had servants at home, so their lives were not very difficult.

Sheng and Sun have had weird tempers since they lost their heirs. However, they are both meritorious men and their titles are not low among the people in this village. They once drove a car for the Marquis of Che, without breaking the law.

Even the village elders find it difficult to restrain him.

"In the past, Sun Po was very fond of Si'er, and he thought he would help him in the future." Ji Chang said.

Ji Si has been liked by people since he was a child, and he is like Sheng. Even lonely old people with weird tempers like Sun like Ji Si. Only towards Ji Si can he have a rare smile. Ji Si, as a picked-up child, has quite a kind of personality.

Feeling of pain.

When I was a child, I would hang out in different houses in the countryside, and sometimes I would be stayed at home by others.

At first, Ji Chang even knocked on doors looking for Ji Si who was staying overnight.

Ji Chang knew that although he had served under Chehou, his love that could not be reached had gone far away.

Similarly, a high-ranking figure like Chehou may not remember Sheng and Sun who used to drive for him, but the relationship is always closer than him.

Having made up his mind, Ji Chang leaned on crutches and opened the door of their courtyard next to each other...

After so many years, Ji Chang still feels guilty and unbearable.

Although Ji Si was a picked-up child, how could he not love him? How could he not treat him as his own grandson?

No matter what he was doing at home, he was always fair, but when it came to enlisting, it was really hard for him to be fair.

…

On the other side, in the Lantian camp, Wang Li asked to see his father Wang Bi, told Zhao Si about making salt, and told his father Wang Jian that he wanted to report to the First Emperor urgently.

Although Wang Ben was dissatisfied with Wang Li, he did not dare to neglect his father Wang Jian's words. Without any hesitation, he wrote the urgent report, selected his soldiers to start the mission, and set off directly from the Chidao of Lantian Camp, heading straight for the First Emperor to drive away.

As for Zhao Si... he was squatting and working with a group of craftsmen.

The first thing I got out was the vernier caliper.

Thanks to the First Emperor's unification of weights and measures, all parts of the country are now unified according to the Qin State's weights and measures, so weights and measures tools such as vernier calipers can be used throughout the country.

The length conversion in the Qin Dynasty was also in decimal.

One zhang equals ten feet.

One foot equals ten inches.

One inch equals ten points.

During the Qin Dynasty, one foot was approximately equal to 23.1 centimeters.

The smallest unit on the vernier caliper is minutes, which means the highest accuracy can reach 0.231 centimeters.

The accuracy of about two millimeters cannot be achieved any lower, because it is difficult to be more accurate with today's weights and measures.

Because the steel smelting technology of this era was too backward, the first vernier caliper of the Qin Dynasty in Zhao Si's hands was made of bronze.

I skillfully pushed the vernier caliper away, got a wooden block to hold it for measurement, and explained the principles and counting methods to the craftsmen while measuring.

…

As a result, Zhao Si was stumped by the mathematical expressions of this era again.

It’s not that there is no mathematics in this era.

In fact, multiplication tables already existed during the Spring and Autumn Period and the Warring States Period.

And thanks to the fact that some of the Mohists settled in Da Qin, the level of military craftsmen in the Qin Dynasty was actually quite good.

Especially the military craftsmen of Lantian Camp, which is the gateway to Xianyang.

Basically, they all have a rough understanding of some mathematical calculations, and the popularity of multiplication tables is not low. The problem is that the expression and operation of numbers, especially decimals, are too troublesome. When it comes to weights and measures, Zhao Si can do the conversions.

The brains are all big.

Zhao Si misses modern Arabic numerals a bit. Arabic numerals are indeed easy to use. This is an indisputable fact.

Zhao Si simply chose to mess it up and let the craftsmen study the vernier calipers themselves, while Zhao Si himself planned to figure out Arabic numerals and various formulas.

Zhao Si's mathematics level is not high, that is, the mathematics level of a high school graduate.

I don’t know how to do advanced calculus or anything like that.

Seriously speaking, after passing the senior year of high school, Zhao Si's mathematics level dropped rapidly, and by the time he left school and entered society, he had almost forgotten about it.

In my previous life, I would sometimes be stunned for a while when I saw questions from elementary school students.

But in this era of average-level addition, subtraction, multiplication, and division, Zhao Si can actually be considered a master of mathematics.

"Unexpected, unexpected..."

Zhao Si wrote a simplified version of 1234 on the ground.

"What are you writing?" A voice came from behind him, and Zhao Si knew it was Wang Li without turning his head.

"Numbers, one, two, three, four..." Zhao Si explained.

"Where did this one, two, three, four come from? Did you see it overseas?" Wang Li had never seen this one, two, three, four that looked like a ghost painting.

"Okay, I've learned how to answer quickly!" Zhao Si smiled.

Because Zhao Si was not so shameless to say that he invented something by himself, and was too lazy to explain, when faced with Wang Li's questioning, Zhao Si would usually avoid going overseas to learn more.

Ask me how I know it? I learned it while traveling around the world.

So much so that Wang Li learned to answer questions quickly.

"What are the benefits of this number?" Wang Li sat cross-legged and sat aside.

The two were already friends, and they got along relatively casually, so Wang Li didn't need to maintain a kneeling posture. As long as his legs were not spread apart and the middle door was wide open, it didn't matter.

Wang Li looked curiously at the ghost-drawing talisman written by Zhao Si on the ground.

Having experienced salt, plow, etc... Wang Li already knew that if Zhao Si squatted on the ground and worked like this, he would probably find something good.

"Easy to use!" Zhao Si smiled and looked at the Arabic numerals on the ground.

Figuring out Arabic numerals, fractions, decimals, functions, equations, and various formulas should be able to bring about earth-shaking changes in ancient mathematics.

Of course, there is another very critical issue.

This thing...he is so eager to learn!

(Checked, please help me catch the bug again.)
Chapter completed!