I am a child of Daqin Xiong, who supervises the country at the age of eight

Chapter 140 Compass

"It's just a trivial matter, and my son will naturally find a solution!"

Ying Changsheng said with a confident face.

Of course he has a solution.

His method is actually very simple.

Isn't it enough to make an instrument that can indicate the direction?
And this thing, Ying Changsheng, happened to know one.

This thing is called a compass.

It's not too powerful a technology either.

The earliest prototype of the compass probably appeared during the Warring States Period.

This thing is called Simon.

Unfortunately, it was not promoted.

Moreover, it's not easy to make something like Sinan.

Therefore, Ying Changsheng plans to create a compass more than 1000 years in advance, only heard Ying Changsheng say.

"Father, my son knows a tool that can be used to identify directions!"

"tell me the story?"

In an instant, Ying Zheng's eyes lit up, and then he said to Ying Changsheng.

"Uh, this thing needs an iron needle, and in addition, a magnet..."

Ying Changsheng said.

"Come here, get the iron needle, and the magnet!"

Brother Zheng's voice sounded in the air.

And Ying Changsheng immediately added.

"Not only these, but also bring me some hay and a bowl of water!"

"promise!"

The eunuch who was going to fetch these things said quickly.

But to win longevity, he plans to make a simple compass based on the method he learned during the handicraft class in elementary school.

Well, a further kind of compass.

Ying Changsheng will last for a while, but he can't make it.

At this moment, it's just a demonstration for Brother Zheng.

Just make one and let Brother Zheng open his eyes, that's it!
Not long after, I saw an eunuch holding a tray in his hand. Inside the tray was a magnet, besides the magnet, there was also an iron needle attracted to the magnet, a bowl of water, and a small bundle of different Know where to get the hay.

"The thing you want is here, show me it!"

At this moment, Brother Zheng's voice sounded in the air.

Ying Changsheng nodded slightly.

On the side, the officials watched him operate intently.

Well, folks, all curious.

Is there any way to be able to discern the direction.

Well, to be able to correctly identify the direction, this can be said to be extremely important for the military!
You know, when marching and fighting.

It is often fought in the enemy's territory.

Therefore, identifying the direction becomes extremely important.

As for relying on the sun, or in other words, what annual rings are used to distinguish the direction?

please!
This thing is not accurate!

Especially the sun, what if it encounters a cloudy day?
As for annual rings?

That's not a tree that can be found anywhere!
It's like on the grassland in the north, how can there be trees?

At this moment, only Ying Changsheng was seen, first putting the iron needle on the magnet, rubbing back and forth, rubbing, rubbing again.

Immediately, on top of the iron needle, tied some hay with a thin thread, which can support the iron needle and float on the level, and then put the iron needle directly in the water bowl.

I only saw that when the iron needle was put into it.

Slowly, on the surface of the water, the iron needle started to move away from the water surface, then turned, and after a while, it stopped.

And look at the direction the iron needle is pointing.

It's one south and one north!

"Ministers, do you understand?"

"After this thing is successfully made, the needle head and the needle tail will point to the south and north respectively. In this way, you can successfully distinguish the direction!"

Brother Ying Changsheng and the ministers explained.

"Bring it here, let me see!"

Ying Zheng was excited and motioned for Ying Changsheng.

Ying Changsheng quickly took the bowl, and then, with his short legs, trotted all the way to Brother Zheng, and immediately put the water bowl in front of Brother Zheng.

But when he saw it, Brother Zheng took a look at it first, and found that it was exactly as Ying Changsheng said.

Immediately, he picked up the iron needle from the water bowl.

Then, he put it in casually.

Go ahead, try again.

Let's see if this iron needle will point north and south again.

Not long after, when the iron needle, once again, stood up in the bowl along the north-south direction.

Only then did Ying Zheng realize how powerful this thing is.

He hissed and took a breath of cold air.

Then, he exclaimed.

"This thing can really tell the direction!"

"Yes, Your Majesty, this is simply a magic weapon for marching and fighting in the army!"

On the side, Wang Jian sighed with emotion.

He is a veteran who has served in the army for many years, so he naturally understands that this compass can take on important tasks on the battlefield.

"With this thing, in the future when marching and fighting, you will never be afraid of getting lost again!"

"Besides, I also saw it just now. The thing made by the nineteenth son is very simple. You can learn it at a glance. It can be taught to the soldiers in the army to use it..."

"That's right, it's quite simple to make. In the future, it will be necessary to prepare more iron needles and some magnets for the army!"

Ying Zheng nodded slightly, then opened his mouth to speak.

But Ying Changsheng shook his head, and then said to Brother Chaozheng.

"Father, you don't need to be so troublesome. My son is just showing you and Father a simple method of making it. This thing can be made into a finished product. At that time, you can pick it up and use it anytime!"

"Oh?"

Hearing this, Brother Zheng's eyes lit up.

Then, I heard Ying Zheng shouting.

"You boy, let me tell you earlier, you will teach the artisans how to make this thing later, and let them make it quickly, so that we can prepare our army in the future!"

"promise!"

Ying Changsheng said quickly.

Brother Zheng suddenly remembered something, he asked.

"Does this thing have a name?"

"Yes, I have!"

Hearing this, Ying Changsheng said quickly.

Nonsense, he doesn't want to ask brother Zheng to give a name, and then change the name of the compass.

In this case, it would be inconvenient for him to talk about it in the future.

I only heard Ying Changsheng say with a smile.

"Father, this object, my son, has already given it a name, called the compass, which means that it can point out the direction, no matter what, the needle will point to the south..."

"compass?"

Brother Zheng muttered the name, nodded slightly, and opened his mouth to speak.

"This name is suitable for the occasion. I think it's okay. It's just that I have a little doubt..."

"Father, what are your doubts?"

Ying Changsheng said in surprise.

At this moment, Brother Zheng opened his mouth to explain.

"My doubt is, why is this called a compass? In fact, this needle is a guide and the other points north. Why not call it a compass?"

"Uh……"

Ying Changsheng showed embarrassment, feeling that Brother Zheng is just a badass.

He said.

"This thing is nothing more than a name. It can be called anything. Let me tell you one more shortcoming of this compass..."

(End of this chapter)