i became a fairy

"Hey, I was so happy that I couldn't speak when I saw you, so I forgot to remind you." Mi Xiaoan stuck out his tongue playfully, then hugged Alela hard, and breathed greedily into her chest twice. Then he relaxed and said with a smile: "Welcome home, Mom."

"Haha, go home." When she heard the word "go home", Alela couldn't help but feel a little moved in her heart. She raised her head and looked at the surrounding scenery with emotion, then took a deep breath and managed to calm down. She turned around and said, "Okay, don't welcome me now. First, let's see what I brought you."

She had a smug expression on her face.

"Oh, the bicycle." Mi Xiaoan glanced at it casually and asked with some blame: "Didn't I leave it with the dwarves for them to study? How did you get it back?"

"It's been studied." Alela smiled, walked over and turned the car sideways and said, "Here, look, the chain, gears, and other small parts have also been made."

"Oh, it's done." Mi Xiaoan was immediately surprised when he heard this, and squatted down to take a closer look.

I saw that the two pedals that were originally on the front wheels of the car had moved to the middle of the car at some point, and there were strange-looking gears and chains hanging in the middle of the pedals.

Well, it is indeed a bit strange.

The color of the gears and chains is much darker than other parts, and they don't look like they were made. The specifications are also slightly larger than what Mi Xiaoan drew, almost comparable to the size of a motorcycle chain. Moreover, their shapes are still a bit off, and they just barely fit together.

"It's not bad." Alela smiled slightly when she saw her daughter's surprised look, and continued to explain: "This thing was made by Richard after a lot of effort. He asked me to get it back first for you to see. But I feel like this one is a bit inconvenient to use. It broke shortly after I rode it, and it’s not as energy-saving as the original one.”

"It's broken." Mi Xiaoan looked at it carefully again, and then understood the reason, and said with a smile: "Why did you not know how to put the chain back on after it fell off? You can't even see this, right?"

"I saw it." Alela curled her lips and said with some dissatisfaction: "It's just that it takes a lot of effort to install it, and even if it is installed, it will easily fall off. Later, in order not to delay the journey, I simply became uneasy. "

"Oh, is that so?" Mi Xiaoan was slightly stunned when he heard this. He looked at it twice more and tentatively pulled the chain. Then he stood up and clapped his hands and said, "Okay, push it back first and let me see what's going on. , Patriarch Grandma and the others should be waiting impatiently."

"Okay." Alela nodded after hearing this, then put her hand on the handlebars and greeted her companions: "Let's go home, let's go home quickly."

"it is good."

Helena and others responded with a smile, and then everyone prepared to move forward. However, at this moment, a black shadow suddenly jumped down from above.

"Hoo wow ho"

Everyone looked around with bated breath, only to see Xiao Hei standing in front of everyone, roaring in an extremely exaggerated manner, and while roaring, he bared his teeth and claws. However, no matter how you look at it, it doesn't look scary at all. Instead, it's a bit funny.

"Uh" Alela stared at Xiao Hei in shock for a while, unable to react. She swallowed before turning around and asked: "An, isn't this your leopard? When did you become stupid?"

"Ahem, no." Mi Xiaoan coughed twice awkwardly, then ran forward, patted Xiao Hei's head gently, and asked with some embarrassment: "Hey, what are you doing? Hysteria”

"I also want to scare them like you." Xiao Hei said aggrievedly, covering his head.

"Then why didn't you scare us together just now?" Mi Xiaoan held his forehead and rolled his eyes.

"Just now" Xiao Hei scratched his head and thought for a while, then explained: "I climbed a little high just now and didn't dare to come down directly. When I could come down later, you were all chatting, so I didn't come down either. Now I see you are leaving. , of course you have to come down quickly.”

"You, you, you." Mi Xiaoan was extremely speechless upon hearing this. He rubbed his forehead hard, then pinched Xiao Hei's ears hard and said, "You are so stupid, you will embarrass me. Let's go back quickly."

"Oh." Xiao Hei pulled his body aggrievedly and awkwardly, and followed Mi Xiaoan forward step by step.

"Haha, let's go too." Alela smiled after seeing this, pushing the car and followed.

At the entrance of the village, everyone came out to wait. Even the rangers who were on duty in other directions had returned. After all, this was Alela's return. Everyone had not seen each other for three years and missed her very much.

Finally, when everyone was looking forward to it, several figures flashed out of the jungle ahead, and the leader was Alela.

"Clan leader" Alela pushed the car to Mi Xiaoan behind him as soon as he walked out of the jungle, and ran towards the crowd with a smile.

She hugged Madeline, her face full of longing, and she said excitedly: "Chief, I'm back."

"Okay, it'll be good when you're back." Madeline was pushed back two steps by Alela, but she was not angry. Instead, she held her shoulders and looked up and down, and asked distressedly: "How are you doing here? You’ve suffered so much outside that your face has lost a lot of weight.”

"Haha, no, don't endure hardship." Alela shook her head vigorously, threw herself into Madeleine's arms and rubbed her twice more, and then choked up and said, "The dwarves are pretty good to us. We have food and drink, but it's just too much." I miss you, I have wanted to come back and see you for a long time."

"Haha, aren't you back?" Madeline stretched out her fingers and wiped Alela's eyes to prevent her tears from flowing down, and comforted: "You should be happy when you are back. Don't cry, children. They’re all watching.”

"Yeah." Alela curled her lips and responded twice, trying hard to smile and look at the person next to her.

"Greta, Savella, Alvin." She stepped forward and hugged everyone one by one, and asked jokingly: "Have you all helped me take care of Ann? Alvin, I heard that you are still old. You are bullying our family."

"No way." Alvin refused to admit it. He raised his head and said with twinkling eyes: "I was teaching her, and I taught her well. Look at how outstanding An is now."

"It's obvious that our Jia'an is good at it, why should you teach me?" Alela snorted in disgust, then thought of something, turned around and took the car from Mi Xiaoan's hand, and said with a proud face: "Here, look. Look, this is a bicycle designed by our Jiaan. It’s already made. Isn’t it awesome?”

"It's done." Madeline was a little surprised when she heard this. She stepped forward to take a look and said in disbelief: "It's so fast. Didn't An say it's difficult to do it?"

"It is difficult to do, but the dwarves used a special method." Alela smiled, but did not explain directly. Instead, she stepped forward and said coquettishly: "Let's go back first. I really want to eat at home now." Eat the fruit that my daughter picked with her own hands."

"Haha, let's go back then." Madeline couldn't help laughing after hearing this, straightened up and waved: "Let's go home to eat first and let them have a good rest."

"Let's go." Everyone nodded immediately after hearing the words, and walked towards the village surrounded by the returning people.

When they arrived under the holy tree, Helena and others immediately unloaded their bags and placed them next to Madeline, and then went to get the food from the table. As for Alela, she gnawed on the fruit and instructed Mi Xiaoan: "An, go and repair the car quickly and show them how to ride it. This car is really fun."

"Oh." Mi Xiaoan nodded, walked to the car that was being watched by Kerna and others, and started tinkering with it.

It's just that the chain fell off. It's a job that any child can do, so it's naturally easier for Mi Xiaoan to do it. There was no oil on the chain, so she could start repairing it directly. It only took a minute to completely reattach the chain to the gear.

"An, do you want to ride? Let me ride." Kerna saw that the car seemed to be repaired, and immediately volunteered to be the guinea pig.

"Forget it." Mi Xiaoan rolled his eyes and refused: "You can ride it later if you want. Now I want to see what's wrong with this car. You all should get out of the way."

"Oh." Keerna and the others nodded somewhat disappointedly when they heard this, and retreated reluctantly.

"Huh." Mi Xiaoan took a deep breath upon seeing this, then stepped onto the car holding the handlebars, glanced at everyone, and began to ride slowly.

"Squeak, click, click"

The strange sound of iron friction kept sounding, and the car slowly started to move around the crowd driven by Mi Xiaoan.

a circle

Two circles

After adding the chain, the car was indeed much lighter, and it quickly ran around the crowd three or four times. At this moment, a soft "click" sound came, and Mi Xiaoan slowly stopped the car.

"Look, it's fallen again." Alela came over while chewing food and bent down to take a look. With an expression that was true, she asked Mi Xiaoan: "How can you tell what the reason is?"

"Not yet." Mi Xiaoan shook his head, thought for a moment, installed the chain again and waved: "Aunt Alvin, Aunt Greta, come over and help me hold the car."

"Oh, okay." After hearing this, the two people immediately came over, holding the car and looking at it curiously.

"Here, Aunt Alvin, you hold the car, Aunt Greta lifts the rear wheel, Aunt Savila, come and help too." Mi Xiaoan continued to give instructions.

The frame of the car is still the same all-iron frame as before. It must be that the time spent in the Dwarf Mountains was too short and there was no time to replace it, so it is a bit heavy and requires two people to lift it.

"Okay." The three of them immediately followed suit.

Seeing this, Mi Xiaoan squatted down and started to lift the pedals with his hands.

She shook it very slowly, and she could see every movement of the chain, but the wheel turned rapidly under the action of the lever.

"click"

There was still a sound, but it was much softer than before. Mi Xiaoan carefully identified the source of the sound and continued to shake it in circles.

"click"

Gradually, after shaking for more than ten turns, Mi Xiaoan could already see that the irregularities between the chain and the gears were constantly colliding, and the chain began to become crooked, looking like it was about to derail at any time.

"That's it." Mi Xiaoan stopped shaking, raised his hand to signal Alvin and the two to put the car down, then reset the chain, lowered his head and began to think.

"Mom." She thought for a while, turned around and asked, "Have you seen how Uncle Richard made bicycle chains?"

"I saw it." Alela nodded, but then shook her head and said, "But I can't tell clearly. Here is a letter written by Richard. He wrote the method on it. Take a look."

As she spoke, she took out a letter from her arms and handed it to Mi Xiaoan.

"Oh." Mi Xiaoan took the envelope and began to examine it. After a while, a look of surprise appeared on her face, and she murmured: "It turns out that's how it is. I actually forgot this method."

Riward was not good at small talk. He just said hello in the letter and then directly stated that his method of making chains was casting.

Casting, the simplest and most primitive agglomerator-type method, was often used in ancient times when making simple farm tools. But in the case of modern CNC modeling, that method has been completely abandoned.

But Mi Xiaoan only thought about modern methods, and even forgot about this ancient and convenient method.

Feeling slightly cheerful, Mi Xiaoan quickly walked to the stone table and sat down, and began to read the letter carefully.

In the letter, after explaining the production method, Riward also raised his own troubles: Although the casting method is simple, there are many problems, which he summarized into three main types:

One is quality.

Things that are cast are certainly not as strong as those that are built.

This is not a big problem. The chain itself does not need to be too strong, as long as it can drive the car.

The second is the mold.

Pouring requires a mold, a soil mold. But to make the mold, you must first have the original part. Riward couldn't make parts like the small chain on the drawing, so he could only make it slightly larger, which resulted in the current situation.

This is not a big problem. Mi Xiaoan has carved some chain parts out of wood. With the help of the system and the power of the moon god, there is no difference from the ones on the drawings, and they can be used to make molds.

The third is the type of device.

Although the poured thing is fixed with a clay mold, it is still easy to lose shape after thermal expansion and contraction. In order to make this chain, Riward cast it many times before barely finding some parts that fit well. However, the result Obviously, it is still unqualified.

This question made Mi Xiaoan scratch his head. Thermal expansion and contraction are physical principles and are difficult to control manually. What's more, it's still under such crude conditions.

But when it comes to solving it, it doesn’t seem to be as difficult to polish as imagined.

Although it would be very troublesome to polish such small parts manually, Mi Xiaoan is a modern urban girl. It is not that difficult for her to design a simple manual polishing machine.