I am a primitive

The iron sand thrown to the ground was attracted by the magnet's suction, broke through the gravity and flew up continuously, and was adsorbed on the magnet.

Later, the iron sand is adsorbed next to the iron sand, or through the iron sand, and the underside of the magnet is made to look similar to long-haired tofu.

After playing like this for a while, Han Dashenzi, who stayed here, saw two little guys playing here non-stop, but they didn't come up with any new tricks. As an old father who had played with these things a long time ago, Han Cheng finally Still can't stand it anymore.

"Come on, Dad will give you a new way to play."

Han Cheng said this.

Then Xiao Xing'er handed the magnet with a lot of iron sand in her hand to Han Cheng's hand.

Han Cheng found a thin wooden board, and then removed a lot of iron sand standing on the magnet with his hands, and put it on the thin wooden board.

After finishing this, hold the wooden board flat with one hand, and stick the magnet under the wooden board with the other hand.

As soon as the magnet was attached to the bottom of the wooden board, many of these loose iron sand placed on the wooden board immediately stood up, looking like a hedgehog.

Han Cheng began to slowly move his hand holding the magnet against the board.

As he moved, the iron sand placed on the plank also moved along with it.

At such a miraculous scene, the eyes of the two little guys who watched immediately became brighter, and they became even more respectful of their father, feeling that his father was an omnipotent existence.

After the demonstration, Han Cheng handed over the board and the magnet to Xiao Xing'er, and the two little guys who saw the new way of playing immediately started playing here with great interest.

Han Cheng was so happy to see that Han Yousan and the others brought back the magnet, of course it was not because the magnet could coax the children to play and gave the children an extra toy.

It's because in addition to letting children play, Han Cheng also knows some extremely important functions of magnets.

Of course you don't use it for audio or something.

This thing is too complicated and too engineering, even if Han Dashenzi tried his best, he still couldn't rub it out.

What he was thinking of was another extremely important, very practical, and less technically demanding thing.

This thing is nothing but a compass!

Identifying the direction is an extremely important thing, especially when walking in the field!

The Qingque tribe is a tribe that often walks in the wild, because they have caravans that are constantly extending outward.

Moreover, because of the times, at this time, except for the roads built by the Qingque tribe, there are no serious roads in other places.

Most of them are primitive and reckless.

Doing business under such circumstances, not to mention the rest, just remembering the road and identifying the direction will test the leader's ability very much.

It is not uncommon for caravans to fall into dangerous situations because they lost their way for a while.

It is precisely because of this that Han Cheng thought of making a compass early on, so that people in the tribe can identify the direction and reduce the probability of tribal people getting lost.

After the tribe started making sailboats last year, Han Cheng's desire to make a compass became stronger.

The compass is basically the standard configuration of sailing boats, especially those sailing boats that go out to sea, and the compass is indispensable.

Navigating on the vast sea, they need a compass to ensure the accuracy of the course more than the trade team walking on land.

It's just that there was no magnet in the tribe. Even though Han Cheng knew how to make a compass, he was still in a state where a clever woman could not cook without rice. He could only be anxious and stare blankly.

But it's different now!

Now the trade team has brought back the necessary item, the magnet!

With a magnet, I can already start to make a compass. This structure is not complicated and not too difficult, but its function and significance are extraordinary!

Thinking this way in his heart, and waiting here for a while, Han Chengcheng stood up from here and walked towards his house...

Not long after Han Cheng stood up and left, Wu, who was holding his daughter, came over.

Seeing him coming, Little Pea, who was having a great time playing with the magnet, stopped what she was doing.

"Wu, this father just brought it over, it's called a magnet, it's fun!"

Little Peanut spoke to Wu happily.

"Look, you can play this way, or you can play this way."

Little Pea happily demonstrated to Wu how to play the magnet he had just learned.

After that, he stuffed the magnet in his hand into the hand of the witch who had one free hand, and let the witch come to play with this novelty and fun thing.

After seeing her brother's behavior, Xiao Xing'er next to her followed her brother's example and gave the witch her own magnet.

The two little guys are extremely close to Wu.

Because Wu likes children, and Xiao Wandou and Xiao Xing'er are the children of Han Cheng, the god son, and they lived in the same house when Han Cheng didn't build a new house before. The two little guys were playing, and under such circumstances, the two little guys were naturally familiar and close to Wu.

Wu was not too polite, after receiving the magnet, he squatted down, hugged his little daughter in his arms with one hand, and played with the two little guys with the magnet in the other hand.

Wu is really good at playing with the two little guys.

After playing like this for a while, Wu has roughly figured out the characteristics of this thing called a magnet.

This thing is really strange, and it is very good to play, especially for coaxing the children in the tribe.

But is that really all there is to it?

A look of doubt and thought appeared in the witch's eyes.

Just now he got the news that the trade team had brought back rare items, Shen Zi attached great importance to it, not only praised the people of the trade team, but even made a reward for cooking for everyone in the trade team!

According to my own understanding of Shenzi over the years, to make Shenzi have such a reaction, this new thing called a magnet must be very useful, and it should not be as simple as just letting the children in the tribe play.

But if this thing is not really so simple for the children in the tribe to play, what is the use of it?

After all, I have experienced this thing myself, and it is indeed very suitable for children to play.

Wu hugged his daughter and fell into deep thought.

Wu originally only needed to ask Han Cheng to fully understand these things, but Wu just refused to do so.

This person who likes to use his own brain likes to think for himself when he is free.

This is especially true when encountering those new things.

Standing here with her little daughter in her arms, watching Xiao Wandou and Xiao Xing'er play with the iron sand sucked by them, after thinking about it for a while, Wu's eyes lit up all of a sudden!

He thought of the important role of this magnet!