When it was almost noon, Xiao Bian ran back and get out of class was over.

When Li Mengxi saw Xiao Bian coming back, he immediately gave his brother the toys he had prepared to comfort the child.

Li Mengxi found a bunch of things, including a large wooden basin filled with water, a handful of small twine balls filled with wheat straw that could float on the water, and an ugly wooden knot with holes in it.

Li Mengxi and his brother counted thirty small balls of twine together. Li Mengxi said, "Brother, count them to see if they are thirty."

Xiao Zhuan counted them carefully one by one, "It's thirty, I counted them."

After counting the small bricks, Li Mengxi threw all thirty small balls of twine into the water basin, and then also threw the pieces of wood into the water basin.

Then just like yesterday, the two brothers were laughing and shaking the basin vigorously, splashing the water in the basin, and together with the balls of twine and lumps of wood floating on the water, they were also shaking.

After the guidance reached this point, Li Mengxi stopped caring. He accompanied his brother, watched quietly, and let his brother play on his own.

A basin of water, some twine balls floating on the water, and a wooden knot with holes. There are so many ways to play with such a simple thing. The most fun thing is to shake the water and look at the wooden knot.

Sloshing with the water.

What may be a fun game for children is extremely childish for Li Mengxi.

The younger brother was laughing and playing with the wooden basin, enjoying himself a lot. Li Mengxi looked on with a smile and did not participate.

The ugly wood nugget looks ugly, but it is not simple in itself. It is made by craftsmen with great effort. The wood nugget itself is a prop to simulate charcoal. The structural properties of charcoal make this wood nugget

Yes, and the effect is magnified thousands of times.

The water sloshed, the knots of wood were floating, and the balls of twine floating on the water were also floating.

Finally, what was supposed to happen happened. A ball of twine accidentally poured into the hole in the wood. Li Mengxi saw this scene, but he didn't say it. He wanted to see if his younger brother's observation ability could independently discover this.

.

Li Mengxi obviously underestimated his younger brother, and after a while, Xiao Zhuan noticed the secret.

Xiao Zhuan picked up the wooden lump from the water, then glanced at the hole, "Brother," he said to Li Mengxi, "he ran inside."

Li Mengxi pretended not to know anything, "Aren't they all in the basin? Where did they escape? Let's count them, shall we?"

Xiao Zhuan looked at Li Mengxi with a look of incomprehension. There was clearly a ball of twine that had gotten into the knot of wood. You could see it at a glance, but you had to count it to know that it was missing.

There is an allusion about Zheng people buying shoes, which means that there was a fool who would rather believe in a ruler than his own feet.

Li Mengxi still didn't know that he was suspected of being stupid by his younger brother. His younger brother felt that it was stupid to have to go to the trouble of counting things that he could confirm at a glance.

Li Mengxi and his younger brother counted the remaining twine balls in the wooden basin together, "Ah, there are twenty-nine!" Li Mengxi pretended to be surprised, and he blinked at his younger brother, "The younger one knows how to do it.

Where did you go?"

The younger brother chuckled, and the younger brother lifted the piece of wood and said, "Brother, look, he ran into this hole."

Li Mengxi took the lump of wood and took a look. Sure enough, the small ball of twine had been poured into the hole and stuffed there.

"Yeah, he really ran inside."

Then, Li Mengxi pretended to mention yesterday casually, "Brother, you still remember that yesterday, we took a bamboo tube and put it in the water. When we shook it, the bamboo tube would also put the thread ball in, right?"

Xiao Bian thought about it seriously and said, "Yeah!" He remembered what happened yesterday and nodded vigorously.

"Then, tell me, how do we get him out? Otherwise, let's see if we can shake him out, okay?"

"Okay!" Xiao Bian replied enthusiastically.

Then, Li Mengxi and his brother threw the wooden nuggets into the water and shook the wooden basin hard for a long time.

However, no matter how hard the two of them swayed, the thread ball in the knot of wood could not come out.

"Brother, why doesn't he come out yet? Why doesn't he come out yet?" The younger brother, Xiao Bian, was so tired that he screamed.

At this time, Li Mengxi taught earnestly with a smile on his face, "Brother, you asked me yesterday that things can be eaten into bamboo tubes, and black can be eaten into charcoal, so why can the things in the bamboo tube be shaken again if you shake it?

But the things in the charcoal can't come out. Yesterday, why did you do this to me? Now, you should understand, right?"

Xiao Bian began to think deeply, his little brows furrowed, and his little face looked like he was thinking, "Brother, is it that the hole is too small and it is stuck and can't come out? The charcoal just stuck the black one,

Yes or no?"

"Haha! Of course! That's exactly what it is!" Li Mengxi touched his brother's little head and was extremely pleased.

Through this simulation experiment, Xiao Zhuan has obviously understood why the black pigment will not come out when the charcoal absorbs color and then sloshes. The reason is that it is stuck. The charcoal has stuck the pigment and cannot shake it out.

My younger brother has figured out why. The porous wood nugget was the prop made for the simulation experiment. The mission of the wooden nugget ends here.

Li Mengxi stretched hard and waited for lunch to be ready.

Li Mengxi had no interest in wooden lumps, but the small bricks were different.

When the wooden knot floats on the water, it is very fun. When a small ball of thread runs into the wooden knot, it becomes even more attractive.

Xiao Bian held the lump of wood and wanted to reach in with his fingers to get the ball of thread out, but he tried several times and failed.

"Brother, what should I do if I can't get it out?" Xiao Zhuan gave up and asked Li Mengxi for help.

Li Mengxi did not immediately lend a helping hand. He smiled and asked, "Then, what should I do if I can't get it out? Think of a way."

Sometimes, children want to give up and all they need is a little encouragement and guidance.

Xiao Zhuan had already given up, but Li Mengxi encouraged him to think of a solution, and Xiao Zhuan immediately thought of a solution seriously.

Xiao Bian frowned and thought seriously for a long time, "Brother, let's find a stick and fish it out from the river."

This chapter is not finished yet, please click on the next page to continue reading the exciting content! "Well, then find a stick." Li Mengxi nodded.

After Xiao Bian ran out to find a small firewood stick, and then ran back, Xiao Bian concentrated on holding the wooden stick and holding the knot of wood, trying to poke the small ball of twine out of the hole.

Li Mengxi looked at his younger brother's clumsy movements and smiled. He knew that his younger brother would probably dig the thread deeper.

As expected, the thread ball was still shallow, but after Xiao Bian poked it with a stick a few times, it completely went in.

At this time, Xiao Zhuan had no choice but to ask Li Mengxi for help.

Li Mengxi laughed heartily, "Brother won't help you, just do your own thing. Think of ways."

Xiao Zhuan refused, feeling aggrieved, "Then I can't get it out of here?"

Li Mengxi also expressed his grievance, "No, there's nothing I can do about it. Think about how to get him out."

At this time, lunch was ready, Guan Yu brought the two brothers' meals, and the play came to an end.

Unable to get the ball of thread out of the wood, Little Brick was worried about it. After lunch, he went back to playing with the broken piece of wood.

Guan Yu also wanted to call Xiao Zhuan back to eat more, but Li Mengxi shook his head at Guan Yu and let Xiao Bian play his own tricks.

Li Mengxi was eating slowly, and Xiao Zhuan was concentrating on playing with the knots of wood.

Xiao Bian first continued to hold the stick and tried to pull out the ball of thread, but the hole was too small and the ball of thread was pushed too far in, so he couldn't get it out no matter what.

After working like this ineffectively for a long time, Xiao Bian also noticed that if he poked it in with a wooden stick, it would go even further in and it would be impossible to take it out.

Xiao Bian stopped smartly. He put down the stick, scratched his head, and started thinking. He was thinking about how to get things out if he didn't use a stick.

There is a joke that says, what should you do if a relatively large object is stuck in a small box and cannot be taken out? It is simple, tell a child not to take the thing out, and then the child will be curious, curious children

Using magical childish methods, I somehow managed to get things out.

Children can magically take out things that adults can't get out despite all their efforts.

Although this is a joke, the underlying truth is that children sometimes have strange ideas and have more flexible ideas and broader imaginations than adults.

When Xiao Bian realized that the wooden stick didn't work, Xiao Bian became confused. The confused Xiao Bian held the wooden stick and looked over and over helplessly. Such tossing and turning was itself a process of observation.

Xiao Bian suddenly discovered that the holes in the wood seemed to be connected, as if the holes at one end could be connected to the other.

After discovering this little brick, I thought of a good method.

He picked up the nugget of wood, took a deep breath, pointed his mouth towards the hole on the other end, and blew hard.

call--

call--

Xiao Zhuan blew hard into the hole, and his face turned red.

Li Mengxi was engrossed in eating when suddenly Little Brick came over and jumped onto Li Mengxi's back.

"Brother, I got it out!" Xiao Zhuan excitedly showed off to Li Mengxi.

Li Mengxi stopped and pulled the small brick on his back into his arms. He took a look at the wooden stick in his brother's hand and said in surprise, "Surprised? You took it out. How did you take it out?"

"look!"

Xiao Bian took the piece of wood and stuffed the small ball of thread into a hole. Then he took a deep breath and blew on the hole on the other side of the piece of wood. The small ball of thread was blown away.

Got up.

"Brother, do you think he will come out like this, right?" Xiao Bian explained with a serious look on his face.

A smile rippled on Li Mengxi's face, "Haha, it's true! You can really do it." Li Mengxi laughed happily and pulled his brother into his arms.

The thread ball can be blown out, right? This thread ball represents particles, such as pigment particles. This means that after the charcoal absorbs the pigment particles, the pigment can be blown out and then used...

Well, the reuse of charcoal.

However, the pores of charcoal are so small that it is impossible to blow it with your mouth. The gas... If it is gas, use wind to blow it, artificial wind... steam? Put it in a steamer to steam it?
To be continued...