The four directions of east, west, south and north are marked on the circular piece of paper.

Furthermore, the degrees are evenly carved out between the directions, and nine spaces are carved out between each interval.

That is to say, there are ten degrees between each space.

In fact, it can be portrayed in a more detailed and precise manner.

However, this first compass that I tried to make was still a little small. If I continued to carve it into detail with a feather pen, it would appear too bulky and messy, making it difficult to recognize.

But these are minor issues. As long as you want to be meticulous, you can just make careful divisions and plans when you produce it later.

Now that this has been successfully produced, these are minor problems.

There is a small hole in the middle of this round cardboard, which can be inserted into the small round bronze column, and its size matches the round bronze base below.

There was a layer of fish bladder glue underneath the round piece of paper, and when pressed down, it just aligned with the bronze bottom below.

After finishing this, Han Cheng took the magnetized iron needle.

This needle is not an ordinary needle, but one specially customized by Han Cheng for the people in the tribe.

It is pointed at both ends, wide in the middle, and has a hole in the middle, which is just right for it to be put on the small bronze column in the middle that serves as an axis.

After some debugging, they got something like a "hat" and put it on top of the bronze column to fix it.

Of course, this kind of fixation is not close to the pointer.

The purpose is not to fix the pointer, but to prevent the compass needle from slipping off the bronze column after someone holds the compass upside down.

This time, before the assembly began, Han Cheng made some adjustments and experiments in advance, trying his best to get everything done well.

So after going through this process and assembling all these things, the embarrassing situation that occurred when making the simple compass before did not occur.

After Han Cheng installed it, made some minor adjustments, and placed it horizontally, the half of the pointer that Han Cheng had managed to dye red was already pointing steadily to the north, which was also marked by Han Cheng with a red pen.

Han Cheng shook it back and forth a few times, then put it down and looked at the effect of the compass.

The purpose is to test the quality of the compass.

As of now, the quality of this newly manufactured compass is still very good.

After being shaken by Han Cheng, it didn't fall apart at all.

Han Cheng placed it flat on the table, and the pointer soon pointed to the north and south sides respectively.

Seeing this, Han Cheng couldn't help but smile with satisfaction again.

Actually, this compass still has some shortcomings.

The downside is the lack of a transparent lid.

It would be perfect if you could put a transparent lid on it.

In this way, the transparent cover can be used to protect the parts inside the compass and minimize the damage from external forces.

As far as Han Cheng could remember, the materials that could handle this important task were nothing more than glass, plastic, and some extremely high-quality crystals!

But the tribe now has none of these things, so there is no use in thinking about them.

All Han Cheng could do was to use some good quality and suitable leather to make an opaque cover to cover the compass tightly.

Open it when in use and close it when not in use.

Although it is not as convenient and beautiful as those transparent lids, it can still provide some protection and is better than having no lid at all.

Holding this thing covered with a soft leather cover, which looked a bit weird no matter how he looked at it, Han Cheng couldn't help but feel tempted.

Perhaps, in addition to using this leather cover, our tribe can really make some transparent things as the cover of this compass!

It is certainly not pure, flawless, and extremely transparent crystal.

To be honest, the tribe doesn't have this thing now, but there is a lot of high-quality jade and raw jade. There is a pile of them in one house.

Plastics are not good either. Although they are very common in later generations and once became an important part of pollution, at this time, Han Cheng couldn't even feel the troubles that made him feel happy...

What Han Chengcheng was attracted to was glass!

Because just now, he suddenly had an idea and remembered an online novel he had read before.

Some of the protagonists above rubbed out glass, and then received a lot of admiration from people, and their wealth and status also increased rapidly.

In later generations, Han Cheng was a person who liked to read novels. At the beginning, he liked fantasy novels, but later he gradually turned to historical novels, and later he basically only read historical novels.

Many historical novels have one characteristic.

That is, many of the people who traveled back in time can remember the making methods of many things, such as the making of glass, horseshoes, efficient modern steelmaking technology, etc.

These things will serve to promote the development of the plot, and can also bring about a lot of big rewards such as showing off, getting rich, etc.!

As someone who has been immersed in this type of novel for some time, it is understandable that Han Cheng thought of something about glass making at this time.

After all, these books contain all kinds of strange and bizarre knowledge.

Even Han Cheng himself believed that if he could remember all the strange knowledge written in the history books he had read, he would be able to lead the Qingque tribe to quickly achieve one leap forward after another!

We can even rapidly step into the industrial age!

After all, there are so many weird things in there!

From small items like needles and thread, mosquito coils, toilet water, bras, sanitary napkins... to large items like red cannons, flintlock rifles, battleships... and so on, it is all-encompassing and has everything you can think of!

Of course, in addition to these, there are also many poems and songs that are specifically used to show off, slap people in the face and increase fame.

However, Han Cheng does not envy these things.

This is not only because he has memorized a lot of these things in his mind, but also because this thing is really useless in this era.

Just imagine the situation where you recited a poem "When will the bright moon appear? I raise my cup to ask the blue sky" to a group of primitive people.

In such a case, you will receive nothing but a circle of primitive question mark faces.

As for the phrases like "The moon is on the treetops, we meet after dusk" and "The orioles are singing on the island in the river. A beautiful lady is the ideal match for a gentleman.", at this time, the effect is really not as good as "I want to sleep with you and have a baby"...

According to a historical novel Han Cheng once read, glass is made by firing sand.

As for glass bottles and other things, they are blown out using a tube or something.

As for the rest, Han Cheng himself didn't know.

He himself couldn't remember clearly, either he had forgotten or it was not written in the novel.

But just these are enough.

Wait a minute, I will tell these things to Heiwa, this guy who wants to throw everything into the fire and burn it, and let him study and explore.

Heiwa now has mastered pottery making, porcelain making and mold making.

As an exploratory talent, these things have long ceased to be challenging for him.

So Han Cheng could predict that when he told Heiwa about this new direction of exploration, this guy would definitely be very excited!

I will definitely be very happy to agree to this matter!

After all, this is something that is related to kiln firing, and once it is made, it also tests one's skills.

There were a lot of people watching around. After all, these days, as Han Cheng assigned various tasks of making compasses and personally cooked for the trading team headed by Han Yousan, as a reward, the people in the tribe were grateful that the trading team had brought back very useful magnets, and that the Son of God was going to use these things to make a very magical compass. The news had already spread in the tribe.

Even though such a long time has passed, the people in the tribe still haven't changed their habit of following the Son of God to see strange things.

Even in the eyes of many elders in the tribe, watching the wonders of the Son of God is much more interesting than watching the model operas performed in the tribe.

After all, over such a long period of time, many of them have already watched the model operas many times.

Visual fatigue has set in.

But following the Son of God to see something strange is completely different.

Because the Son of God can always come up with a lot of rare things that make people unable to help but be dazzled by them.

For example, at this moment, everyone present felt extremely curious and novel about the compass, which would eventually stop pointing to the north and south no matter how it was turned.

I feel that this time, it was not in vain for us to come here to watch. It was really worth it.

Looking at the reactions of the people present, Han Cheng suddenly felt like he was doing a live broadcast.

If I were to do live streaming in this era, judging by the way people are acting now, it is conceivable that I would make a fortune.

Of course, it is also very likely to be like this - you receive a piece of dried meat as a reward from pine branches, and you receive two dried vegetables as a reward from stones...

Not all people standing here to watch the fun are here to watch the fun. Some are here with thoughts and a strong desire for knowledge.

For example, Shi Tou, who has been a witch in preparation for many years.

Talking about this matter, Han Cheng sometimes finds it really funny to think about when Shitou will say with a sad face, "How can there be a witch who has been in preparation for forty years in this world?"

Shitou is a part-time teacher in the tribe, and his thirst for knowledge is as strong as ever.

After standing here and watching for a while, he finally spoke up and asked Han Cheng for advice.

"Son of God, why does the needle of this compass always point to the north and south? Why doesn't it point to other places?"

When the stone opens its mouth, it will pick up the thickest fry and will be able to get to the point with just one question.

After Han Cheng thought about it, he smiled and said to Shi Tou: "This is because the entire earth is a large magnetic field.

The South Pole and the North Pole are equivalent to the two poles of this large magnetic field.

I wonder if you have noticed an interesting phenomenon these days.

If you break a magnet, it is impossible to put it back together again without relying on external force such as squeezing it with your hands.

Moreover, even if you force them together with your hands, as soon as you release your hands, they will separate, change direction, and then stick together again.

This is because magnets have the property that opposites attract each other and likes repel each other.

A broken magnet changes from a whole into two individuals, and naturally there is a distinction between same and opposite sexes.

In other words, there is also a South Pole and a North Pole on this magnet.

If two South Poles face each other, they will repel each other. If a South Pole faces a North Pole, they will attract each other.

As for the compass needle, although it is made of iron, after my operations, it has become magnetized and has the properties of a magnet.

That is to say, it also has the South Pole and the North Pole.

Under the effect of like charges repelling each other and opposite charges attracting each other, the needle will naturally rotate to a north-south direction.

Furthermore, the part that is dyed red and has the characteristics of the South Pole points to the North Pole, while the part that is not dyed points to the South..."

The Green Bird Tribe’s Son of God’s small classroom has started again.

Han Cheng, the son of God of the Qingque tribe, based on his knowledge of magnets and compasses, combined with his own understanding and the understanding of the tribesmen present, explained the story to the stone in the most understandable way possible.

When Han Cheng started speaking, everyone present fell silent and listened very attentively.

However, the same words sound completely different to different people.

For example, Shi Tou. After Han Cheng finished talking about these things, it didn't take long for him to understand most of them.

But even though more people were present, they knew the meaning of every word Han Cheng said. However, after putting them together, they could no longer understand it and didn't understand anything.

What about the South Pole and the North Pole, what about like charges repelling each other, what about the South Pole attracting the North Pole, etc. It makes people feel overwhelmed just by hearing it. After a while, people are confused...

However, the more this happened, the more people in the tribe felt that the Son of God was powerful and unfathomable!

Come to think of it, if people like us could easily understand what the Son of God said, then what would happen?