Chapter 78

To celebrate Dabing becoming the hall master of this book, there will be a third update today. Fatso said he would definitely add an update, and he always keeps his word!

......

After coming down from the Dragon Tower, both of them still felt a bit reluctant to leave. Donggua had completely let go of her worries and was as happy as a little butterfly. She rarely went out to play, and this time she came to Ice City with a mission. Now that the burden was lifted, she naturally felt happy.

Liu Meng also felt a sense of enlightenment, infected by Donggua's happiness, and he felt happy too. The two of them ran like children, with Liu Meng carrying Donggua's suitcase, making his movements less agile.

Not far from the Dragon Tower, a few children were playing, running around with remote controls in their hands.

Donggua stopped and stared at the sky.

"What's wrong?" Liu Meng asked as he caught up.

"Look, little planes, they look so fun!" Donggua pointed to the small flying objects in the sky.

Liu Meng followed her finger and saw a few small planes circling in the sky. A few children were running around, controlling them. One child was particularly skilled; after the small plane fell freely, he suddenly increased the power, and the plane performed a side roll, drawing cheers from the other children.

It was clear that these small planes were homemade, with excellent communication and advanced control technologies like third-order PI, dual-layer PID, and fuzzy recognition, making the control between the planes and the remote controls very robust.

Liu Meng was quite surprised that the child could make the plane do a side roll.

Donggua, like a child, stared with longing. Such toys were rare, and she had never seen children play with them so smoothly.

Liu Meng smiled and said, "There's a stall right over there selling them. Why don't I buy one for you to play with?"

Donggua's eyes lit up, but she felt a bit embarrassed, "I'm so old, it wouldn't be appropriate for me to play with this."

"What's the problem? There are even old boys who play with toys. Besides, you're still young and girlish." Saying this, he was afraid she would feel embarrassed again, so he took her hand and walked forward.

Donggua felt a bit embarrassed being pulled, wanting to break free but not wanting to use too much force. Seeing Liu Meng walking eagerly ahead, not intentionally taking advantage of her, she reluctantly allowed it.

The toy vendor was someone Liu Meng knew. The last time, this young man had taken him to the toy market. The young man still remembered Liu Meng and smiled and nodded.

Upon closer inspection, the young man was indeed selling small planes, along with small cars. Liu Meng smiled and said, "It's been a few days, and you've upgraded. You're selling small planes now. How's business?"

The young man smiled and said, "It's very popular. Even though they cost nearly ten times more than the small cars, the children love them. When they see their classmates playing, they pester their parents to buy them. I'm planning to stop stocking small cars; the profit is too thin."

Liu Meng was somewhat surprised. He had expected the small planes to be popular, but the high price should have affected sales. He didn't expect them to be so popular that a street stall could sell more than ten times the number of small cars.

Thinking about this, he felt a bit bitter. But then he hardened his resolve and thought coldly, "Huang Sheng, if you had given me that 5000 yuan, I would have swallowed my pride and accepted it. Now, you can just work for me and sell more goods."

The small planes were so popular because their control algorithms and communication were far superior to other electronic toys of the same period. Many children played with them in creative ways, like the side roll he had just seen, which quickly created a buzz and made them a trend in children's toys.

"Hehe, let me tell you, I make 25 yuan profit on each small plane. If I sell ten a day, that's 250 yuan, which is pretty good. You might consider stocking some for the countryside," the young man whispered with a smile.

Donggua, seeing that the two seemed to know each other, looked curiously at Liu Meng and the young man.

"Sure, I'm buying one for someone else. I'll take one to see how it goes, and maybe I'll stock some."

"You'd better hurry. I've heard that only Mr. Huang can make them, and the toy market is almost out of stock. I'm planning to stock up more later," the young man said honestly, handing over a small plane and adding, "You're buying it for a child, right? They love it; it's very high-tech."

Liu Meng looked at the blushing Donggua and chuckled, "You bet. She's been pestering me, so I had to come out and buy one for her. Yeah, for my niece."

"Here's 30 yuan back; I'll only charge you the cost price." Liu Meng gave him 200 yuan, and the young man hesitated but still gave Liu Meng 30 yuan back, not wanting to profit from him.

Liu Meng tried to refuse, but the young man insisted, so he had no choice but to accept it.

"You're new to Ice City, and I haven't been a good host. I've even eaten at your place twice. This is a small gift to show my appreciation." As they walked, Liu Meng handed the small plane to Donggua.

Donggua curiously opened it and looked at Liu Meng, "How do you even know the toy vendor?"

Liu Meng smiled mysteriously and suddenly said, "If I told you I developed this small plane, would you believe me?"

Donggua giggled but said seriously, "I believe you! I feel like anything strange could happen with you."

"Go ahead and try it out, my little niece!" Liu Meng teased.

Donggua, hearing this, thought about how he had taken advantage of her in front of the young man and playfully punched him, but it was very light, like a breeze rustling through willow branches. "You're so annoying, taking advantage of me. I'm two years older than you!"

"Alright, just try it out. The control is really good!" Liu Meng quickly pleaded.

Donggua quickly installed the battery and started playing. At first, she couldn't get the hang of it, but the small plane wouldn't fall on its own. The blades would automatically rotate to increase descent resistance, giving the controller time to react.

Liu Meng watched, satisfied. This was the fuzzy control he had added. He hadn't had time to test it after making it, so this was the first time he was seeing it in action.

Donggua had nimble hands, both in cooking and playing with the small plane. She quickly mastered the controls and flew it ten meters high, unintentionally performing a Marseille turn, with smooth and fluid control. The more she played, the more she loved it.

Watching her, Liu Meng finally understood why the small planes were so popular. The multiple control layers made the remote-controlled planes easy to use, which was the main reason.

Donggua played happily, running around and controlling the plane just like the children earlier.

"Always so cold and aloof, but inside, you're a playful girl. Truly interesting," Liu Meng thought, feeling happy and reflecting.

Donggua played until she was drenched in sweat, her face flushed and excited. "Fatso, this is really fun. You should try it too. I've already learned a few flight tricks, and it's so much fun."

Liu Meng also wanted to test the performance, so he didn't refuse. He put the suitcase aside and started playing, focusing on the control performance, such as the maximum height the small plane could reach, its maximum forward speed, and the flexible communication range between the remote control and the plane.

Donggua dragged the suitcase behind her, pouting. She thought, "He says I'm his niece, but he's having more fun than me. He's more like my nephew!" Thinking this, she felt she had taken a big advantage of Fatso and couldn't help but laugh.

Liu Meng continued testing, becoming more and more detailed, essentially testing the internal code. He had a habit of being incredibly focused once he got into something, whether it was typing, developing the small plane, or solving math problems.

Once he started, he would forget everything around him and immerse himself in it.

Donggua followed, and she saw Fatso actually walking onto the main road. A very fast car was coming straight at him. Without thinking, she dropped the suitcase and lunged at Fatso, trying to push him out of the way.

Liu Meng was suddenly knocked off balance, his mind snapping back to reality. He immediately saw Donggua fall to the ground and the car speeding towards them, leaving no time to react.