Who knows! As soon as I returned to the mountains to farm, I encountered a natural disaster.

The simplest method is to make a runner, hang the rope on the runner, turn the handle connected to the runner, slowly wrap the rope around the wheel, tie the other end of the rope with gasoline under the cliff, and pull it up. .

It's like the water-fetching device above an old-fashioned well or the reel principle on a fishing rod.

"It's just that it's a bit tiring to do it manually. I'm still wondering if there is any way to make a device that can be driven by feet like a bicycle, which can save a lot of effort."

In fact, if you can prepare a few more pulleys to share the gravity, you can save more effort, but you will regret it when the books are used. Almost all physics knowledge is returned to the teacher as early as the moment you graduate from high school.

If you want to use this method, you have to go home and experiment a few more times to see if you can find that little bit of knowledge from the dusty memory.

But don't worry, there aren't many things at home that can hold oil, and there are only a few empty oil cans now. Mu Xi will go after the device is finished and he has rested.

When he was lying in bed at night, Zhao Yeqing poured a bowl of medicinal wine that Mu Xi had brewed himself to rub his arm muscles.

If I don't knead it well, I won't be able to pick up the chopsticks tomorrow.

Mu Xi's arm was stiff even without exerting any force. Zhao Yeqing's hand became sore after not rubbing it for long, so he could only rest for a few minutes before continuing. Mu Xi wanted to tell her not to rub it, but he was afraid that he would not have the energy to do it tomorrow. Living can't help.

Zhao Yeqing shook his sore wrist: "Originally, I was thinking of asking you to get those hives back tomorrow, but it seems I have to wait until next time. Your hands will probably have to rest for a few days."

The hive is located at a high place, so you have to move quickly to clean it up, dragging this half-broken arm is not enough.

"Let's come with you when we get the device ready." Mu Xi lay on the bed, took Zhao Yeqing's wrist and put it under his chin. When his hand felt weak, he gently rubbed her wrist with his chin: "A few days ago, I After finishing the silage, I let a pig out, but it behaved quite well and didn't run around."

As she spoke, her chin moved up and down, and the thin stubble tickled her skin. Zhao Yeqing pushed Mu Xi's head away and withdrew his hands, rubbed his hands together and continued to massage him.

"Then put two more ends out to try tomorrow. The installation won't be possible even after a while. I don't have any suitable wood at home, so I have to go out and cut it back. I guess your skills are not very good. I'll go there."

Mu Xi regretted his bravery today more and more. If he had known that his current level had deteriorated to this level, he would have put the oil pot under the cliff in the afternoon and moved it next time. No one could take it anyway.

It’s not like Zhao Yeqing has to do this job.

"Otherwise, you can study how to make the device at home tomorrow, and I should be able to go the day after tomorrow."

"It's just cutting down a tree. I plan to go to the stone road and cut it down. I'll drive there and use a chainsaw to cut the tree into sections and then pull it back. Anyway, there are no dangerous animals there now."

It was easier to use a chainsaw while driving. Hearing what Zhao Yeqing said made Mu Xi feel better.

Research equipment also requires materials before conducting experiments, and sometimes drawings alone are not enough.

Especially when you are half-assed.

Mu Xi's hands were indeed sore and painful the next day. Fortunately, he had rubbed the medicinal wine last night. Although he was sore and swollen now, he was not unable to do any work, so he was sent by Zhao Yeqing to follow the cattle and sheep out to graze.

I don’t know if it’s because the only dogs grazing recently are rhubarb, but these older mixed-breed sheep always have a tendency to run away.

Mu Xi found that Dahuang was having a hard time driving these lambs back yesterday. He really had to follow them today to give the mixed-breed sheep a little deterrent, so as not to keep trying to run away.

Early in the morning, Mu Xi followed the herd of cattle and sheep out of the house. More than an hour later, while sitting on the top of the hill, he saw Zhao Yeqing driving by, heading straight towards the northwest forest.

The chainsaw cuts down trees very quickly, and the same goes for splitting. A big tree can be split into several sections in two or three strokes.

The trunk can't fit everything in. The trees here are all very old, so it's not even half full.

When Zhao Yeqing returned home, he began to study how to make the device. The first step was to make the runner as originally conceived.

It's not difficult to do, but it took some time to polish it. After it was done, I moved the things to the balcony on the second floor. After tying a rope to it, I threw the rope down from the upstairs.

After going downstairs, tie one of the barrels of oil that Mu Xi brought back yesterday to the rope.

After returning to the second floor, I started to turn the wheel. As the rope tightened, the gasoline barrel was fished up normally.

It's just that this method can only help to rise, but it won't save much effort.

The handle and the rotating part of the wheel were not smooth enough. She went downstairs and took some tung oil used by the original owner to light the lamp and poured it into the gap. It had a slight effect. It would be better if she could apply some wax.

In short, this wheel is initially completed, and the only thing left is to make a labor-saving device.

The height from the second floor to the first floor is only more than three meters. When she lifted the oil just now, she found it very laborious. If she had to lift it from the cliff of more than fifty meters, her hands would probably be sore before even halfway. .

And the task of lifting the gasoline barrel could only be completed by her. Mu Xi had to go down to the bottom of the cliff to tie the gasoline barrel and the rope together.

Unless the rope was divided into two sections, Mu Xi would have to go up and down several times, and the risk of climbing would be high if he was not physically strong enough, so it was necessary to create a labor-saving device.

Zhao Yeqing vaguely remembered that she was taught to use directional wheels and directional wheels to make labor-saving equipment in her physics class, but she had almost forgotten them all. It took her a whole night of thinking about these two terms to find out.

The process of making two wheels is not complicated, but the places that need to be polished are much more than when making a runner.

It was already evening when Zhao Ye Qingguang cut the size of the wood to be used.

Looking at the time, Mu Xi was coming back soon. The pigs that had been let out in the morning had to be driven back before the cattle and sheep came back.

Two of the four dogs were left outside the yard to watch the pigs and not let them get close to the sweet potato field.

The pigs that were let out were all piglets that had just been born. The big pigs were too heavy. The two were worried that if they rushed to eat the sweet potatoes, the two dogs would not be able to control them. They now let the little ones adapt to the environment. , when they grow up, they won’t run around anymore.

It is a step in domestication.

After a while, the appearance of cattle and sheep would frighten the piglets and run away. Zhao Yeqing scooped up a ladle of pig food and walked to the door of the courtyard. He called out "luolulululuo" several times. The pigs on the grass outside the courtyard had their noses arched on the ground. The little pigs immediately raised their heads when they heard it, and the next second they ran directly towards the pig food.

Seeing that he was almost there, Zhao Yeqing began to step back, leading the piglets step by step to the pig pen before pouring the pig food in his hand into their troughs.

Within two minutes, the bleating sound of sheep came from outside. Why did it still sound a bit sad?