It turns out that the saying "you can't become fat in one bite" is very true.

Of course, this does not include the long worm that swallows prey that is thicker than its own body, causing its body to grow larger and bloated at a speed visible to the naked eye, and directly becomes a big fat man.

Han Cheng now deeply understands the wisdom of this common saying.

When he first tried to make a spinning machine, he wanted to spin as many threads as possible at a time to greatly improve work efficiency.

But after some experiments, it was found that this was simply not feasible under current technical conditions.

In the end, all the extra wooden pillars were taken down, leaving only the middle one.

Looking at the simple spinning machine that had spun a lot of yarn under Bai Xuemei's operation, Han Cheng couldn't help but smile.

As of now, it seems that I have figured out a lot of things and found the basic principles.

Based on the current simple spinning machine, Han Cheng constantly solves and adjusts the problems that arise. He believes that he will be able to make a useful spinning machine.

When you are in a good mood, your appetite will be good.

Han Cheng ate two and a half bowls of vegetable soup and millet rice before he stopped eating.

"Let's go, don't study it for now, go back and have a good sleep, and then continue after you wake up."

Han Cheng finished the last bite of rice, looked at Bai Xuemei who was still sitting on the stool, turning the simple spinning machine with her hands and constantly experiencing this new toy, and said this aloud.

Han Cheng opened his mouth, and the child bride, who had always been well-behaved, immediately stopped what she was doing, stood up, and followed Han Cheng, who was holding an empty bowl and chopsticks, out of the courtyard of the carpenter's room and headed towards the house where the two lived.

When people let go of their worries, the quality of their sleep will improve.

Han Cheng originally planned to take a short nap and then get up to continue researching and modifying the spinning machine that had achieved a small success. However, when he woke up, he found that the sun had already set...

Rubbing his eyes and sitting there in a daze for a while, Han Cheng shook his head, stood up and walked outside.

After waking up from such a sleep, he felt refreshed and extremely comfortable all over.

Sister Bai Xue was under the shade of a tree not far away, winding the string of a spinning top one by one.

There was a small cradle next to it, with a baby lying in it.

The little baby opened his round eyes and sucked one of his fingers with relish and saliva dripping, as if he had eaten something delicious.

Seeing Han Cheng coming out, Bai Xuemei did not stop what she was doing and smiled at Han Cheng.

Seeing such a scene, Han Cheng couldn't help but smile.

My heart is especially warm, and the beauty of the world is probably just like this...

Han Cheng didn't ask Bai Xuemei why she didn't call him to get up. He walked over to look at his little son in the cradle, made a face at him for a while, then reached out and touched Bai Xuemei's head, then bent down and picked up his little son. With his other hand, he carried the movable cradle and walked towards the carpenter's room.

Without Han Cheng saying anything, Bai Xuemei followed Han Cheng towards the carpenter's room.

This has become a habit for the two of them in the past few days.

Arriving at the carpenter's courtyard where Han Cheng made the spinning machine, Han Cheng half-carried and half-dragged the cradle and placed it in the shaded area, then put his youngest son inside and let him continue playing.

Sister Bai Xue came over with a chair, placed it next to the cradle, and continued to spin the thread with a light and casual spinning top.

As for Han Cheng, he began to think about how to transform this simple spinning machine.

This experimental spinning machine can indeed be used, but it is not very convenient and its efficiency is not high.

Through previous experiments, Bai Xuemei found that under the same amount of time, the speed of spinning with such a spinning machine is not even as fast as that of Bai Xuemei herself using a spinning top.

When this situation happens, you don't need to think too much to know that what Han Cheng made is pretty useless.

Han Cheng is currently thinking about how to transform it here.

If you want to increase the speed of spinning, you need to make these fibers grow faster.

In other words, this simple spinning machine needs to rotate faster.

After sitting here and thinking for a while, Han Cheng reached out and grasped the handle of this simple spinning machine and started turning it quickly.

The speed was so fast that it made some humming sounds.

Things that come fast tend to go away quickly.

Han Cheng maintained this speed for a short while before gradually slowing down and finally stopping.

Under Bai Xuemei's somewhat surprised gaze, Han Cheng swung his tired arms and shook his head.

Relying on this method of rapid spinning to speed up spinning is not feasible. It is too tiring, even more tiring than using a spinning top.

Spinning is a long-term endeavor.

Now, people feel tired in such a short period of time, which is obviously not acceptable. There are still many things that need to be improved.

But how can this be improved?

How to solve this troublesome problem?

Han Cheng sat down and thought in front of this simple spinning machine.

He had a vague feeling that as long as he solved this problem, he would be able to make the spinning machine.

But how to solve this problem?

Han Cheng fell into deep thought.

This kind of thinking lasted for about half a day.

Just when Bai Xue, who was sitting next to him spinning with a spinning top, thought that Brother Cheng had fallen asleep, Han Cheng, who had been supporting his head with his hands and keeping motionless in one position, finally stood up.

He stood up and walked to the side.

After rummaging around in the carpenter's room where materials were stored, he came over with some materials.

The materials are some bamboo and wood, as well as some extremely strong vines that can be used as ropes.

Han Cheng put these things down, thought for a while, turned around and returned to the carpenter's room, and came out after a while.

There is one more thing in my hand.

This is a chisel made of bronze.

Han Cheng put down the chisel and began to dismantle the simple spinning machine.

The main thing is to separate the rotating body from the frame below that supports it and allows it to rotate.

After separating them, Han Cheng laid them flat on the ground. In the middle of the wooden pillar, he evenly chiseled six points around the cylinder.

Then I picked up the chisel and axe and started to drill holes at these points one by one.

After a while, six holes of similar size and depth were drilled one by one.

Han Cheng found suitable wood from the bamboo and wood materials he brought, and cut it into six pieces of equal length.

After repairing one end of each, nail them into the six holes on the wooden pillar one by one and fix them firmly.

Then Han Cheng used a longer vine to wrap around the tops of the six bamboos one by one, and finally connected them end to end and fixed them together.

In this way, a circle is completed.

If you ignore the material and the excessively large axle, you will find that what Han Cheng made is very similar to the bicycle wheels of later generations.

After carefully checking and confirming that the thing was sturdy and there were no problems, Han Cheng began to install it on the wooden shelf.

After a while, Han Cheng stopped and started to raise the shelf.

If the rack is not raised, the wheel with a much larger diameter will rest on the ground and will not be able to turn at all.

After a busy work, Han Cheng placed the wheel-like thing on the raised shelf and fixed it in place.

One side of this big wheel is equipped with a handle that can be held by hand to shake it, and on the outermost circle of the other side of the wheel, there is a thin wooden pole for hanging the line.

Han Cheng held the wooden handle and shook it a few times. It was quite light.

"Come and try how you are now, and see if it's better."

Han Cheng said this to Bai Xuemei who was not far away.

Hearing Han Cheng's call, Bai Xuemei, who had been paying attention to the situation here, immediately put down the spinning top in her hand, walked to Han Cheng, and skillfully tied the fiber to the small wooden pole on the modified spinning machine that was specially used to tie fiber.

Then he squatted beside the spinning machine, holding the fiber in one hand and the handle of the spinning machine with the other hand and began to shake it, trying to weave cloth with the spinning machine that had just been modified.

But some problems were discovered at the very beginning.

For example, the handle on the spinning machine and the wooden pillar on the spinning machine are located on both sides of the big wheel.

If a person wants to work with this spinning machine, both hands need to be placed on both sides of the spinning machine.

In other words, people are in a vertical relationship with the rotating wheel of this spinning machine.

When the spinning machine first came to market without the big wheel, there was no problem at all. You could spin in this position without feeling uncomfortable or awkward.

But that's not possible now. The wheels have become much larger, and people's arm span is limited. In this situation, in order to ensure that her body does not rub against the wheels and that the wheels can rotate normally, Sister Bai Xue's hand holding the fiber cannot extend too far outward.

Not being able to move out too far means that the distance between your hands and the wheel is short, and it is impossible to spin too much yarn at once.

Moreover, the reason why Han Cheng made such a big wheel was that he was thinking, if the spinning machine's wheel became bigger, would the speed become faster.

Now it seems impossible.

Sister Bai Xue held the wooden handle and turned it. Every time she turned the wooden handle, the big wheel would turn one circle.

The wheel's rotation speed does not increase just because the wheel's diameter increases.

After standing here and watching Bai Xuemei spinning yarn for a while, Han Cheng called a halt.

Given the current situation, there is no need to continue the experiment.

Because the problem now is already very big!

Sister Bai Xue obediently stopped what she was doing and returned to the side of the cradle.

At this time, Little Yellow Bean, who had fallen asleep while playing, has woken up and is showing signs of wanting to make trouble.

As a mother, Bai Xuemei obviously has abundant experience in this regard.

She bent down, picked it up, and began to feed the child.

The little pea who was about to make a fuss just now calmed down instantly.

Han Cheng sat here and watched his wife feeding the baby for a while. Then he once again turned his attention to the spinning machine in front of him that was still not working properly. He fell into deep thought and felt that his hair was about to fall out...

It was a hot day, and the scorching sun shone on the ground as if it were on fire.

In the threshing ground, the roaring four-wheel tractor was connected to the winnowing machine by a belt, which made the machine spin rapidly and make a whirring sound.

A strong wind blew out, blowing the chaff far away, leaving only the clean wheat...

Han Cheng woke up from his sleep and when he opened his eyes he saw a sliver of moonlight shining through the gourd shed.

Han Cheng lay there without moving, taking in the tranquility of the moonlit night and the beauty of the dream he had just had.

Recalling the dream just now, his thoughts were suddenly pulled back, and he suddenly realized that he was not in the primitive society now, but had returned to the time and age that he could never go back to...

The warm yet somewhat melancholy mood of course disappeared with the appearance of the constantly turning wheels on the front of the four-wheeled vehicle and the rotating winnowing machine.

Han Cheng, who had been lying there quietly, suddenly sat up. The moonlight shone on his face and there seemed to be a light flickering in his eyes.

He sat here with sparkling eyes.

After a while, he got up, put on his clothes, and walked towards the carpenter's room in the moonlight...

A light was lit in a place in the carpenter's room, flickering slowly in the night breeze.

Han Cheng sat here, busying himself with tools in his hands.

Sometimes he would be busy for a long time, and sometimes he would stop and think for a while...

Time passed quietly, and before I knew it, it was already dawn.

Sister Bai Xue woke up and turned around but didn't see Han Cheng.

Only Little Pea was left on the bed where Han Cheng slept.

Brother Cheng woke up and got up without me noticing when.

As if they had telepathic connection, Sister Bai Xue, who had been standing there for a while, walked towards the carpenter's room.

In the small courtyard of the carpenter's room, Han Cheng was turning a simple spinning machine with the wooden handle in his hand, making some noise.

The spinning machines at this time had undergone great changes.

The style of the large wheels has not changed, and have been reshaped to make them more neat.

Next to the large wheel with a diameter of nearly one meter, there is also a small wheel connected to it...