Courtyard House: Drunk and tipsy, the whole courtyard exposed at the start.

Using an egg beater is easy; it's basically a metal strainer-like device. You manually beat the egg whites until they become creamy, which takes about 8-10 minutes per batch.

Doing it occasionally is fine, but Li Huaide's demand is increasing.

Using electricity is indeed unsafe, so a crank-type semi-automatic egg beater can be used instead.

It's the kind with three metal strainers and a handle. When you turn it, the speed is fast and even, and the whipping effect is good.

It takes about one or two minutes to type.

If all else fails, you can put a bicycle next to it, connect it with a belt and gears, and change the vertical rotation power to horizontal power to drive the semi-automatic egg beater to stir.

There are also simpler, semi-automatic egg beaters that require pressing, similar to small push-button fans or drilling devices. They are very convenient, at least more convenient than fully manual ones.

That solves the problem; it's not that difficult.

Zhang Dabiao said enthusiastically, "Uncle Li, I'll go back and draw up a design. Can you ask the factory to make me some tools? With the tools, I'll be more efficient at making cream."

"Well, could you also get me an oven? You can always find a way to do that, right? With an oven, I can make more varieties of cakes."

Li Huaide was stunned; the oven wasn't the problem.

But you're just a third-grade elementary school kid, how can you draw design drafts and make tools?

You're not an engineer or researcher, are you kidding me?

Do you understand mechanical principles?

Did you go to university?

Zhang Dabiao didn't understand mechanical principles, but he understood basic concepts like gears changing the direction of force, belt drives, and large gears with smaller gears changing speed.

Then, his home has a regular egg beater that looks like a metal strainer, as well as a small handheld fan and a handheld lamp that can be pressed.

Let's tear it down!

Moreover, Zhang Dabiao has done game concept art, so he can draw three-view drawings!

Just add a scale and it'll be fine!

The next day, Zhang Dabiao finished the design drawings. It took some effort, but there weren't any major problems.

Especially that push-button handheld fan, it was copied directly from the original at a 1:1 scale, there's no way it could be wrong!

It doesn't contain any complicated electronic equipment; it's purely mechanical, so it can be 100% replicated.

The next day, Zhang Dabiao submitted a total of 5 design drawings:

1. A regular stainless steel egg beater – it's just a wire strainer;

2. A handheld mini fan with a push-button design, which thoughtfully includes a safety net and hanging rope. Without the safety net, this thing would be quite dangerous.

3. A push-button handheld flashlight, you just need to change the bulb. Zhang Dabiao thought this thing was useless because it was unstable since you had to press it to light it. Since he had one at home, he just copied it down and threw it to Li Huaide, saying, "Whether you do it or not is up to you."

4. Press-type mixer, the kind used at home for mincing garlic and meat;

5. Crank whisk – with 3 wire sieves, the kind that you push like a millstone.

Professionals should do professional things, so the design drawings were handed over to Li Huaide, who was completely stunned.

The drawing actually looked quite realistic, and he couldn't help but ask doubtfully, "Does this really save effort?"

"Of course! You'll know once you get someone to make one, right? The steel mill should have plenty of talented people to make these little gadgets, right?"

"Liu Guangqi's father is a blacksmith, and Yi Zhonghai is a fitter. Why not just let them handle it?"

Although I really didn't want to bring Yi Zhonghai along, the old guy's hands were indeed steady, and his skills were top-notch—it made perfect sense to grab him to be a tool and free labor for me.

Just make the best use of it. This isn't like making a mushroom bomb, there's nothing to keep secret.

Moreover, if there were technicians or engineers present, they would immediately understand what was going on with this thing.

Li Huaide was still a little skeptical, because these days, not to mention household cooking and processing machinery, all machinery was valued for its size and durability, which was a continuation of the design style of the Russian bear.

Zhang Dabiao's design core theory is very simple and easy to understand at a glance.

However, his design style leans towards miniaturization and ingenuity, and his aesthetics are many levels above the existing types. Li Huaide felt that none of the imported household cooking appliances he had seen could compare to Zhang Dabiao's design.

Of course, miniaturization presents challenges in ensuring the precision of core components. Small tolerances make machining more difficult.

Domestic precision processing cannot achieve mass production, which is why senior technicians are so important.

But seeing how well Zhang Dabiao's drawing is...

Then give it a try.

As Li Huaide left with the design drawings, Zhang Dabiao reminded him, "If you make these three things well—a handheld fan, a hand-cranked mixer, and a hand-cranked egg beater—you can earn foreign exchange."

The principle isn't difficult, but Zhang Dabiao has full confidence in his human-centered design, ergonomic engineering, product styling, and aesthetics! It's an absolute game-changer—because he directly copied the designs from mature products from later generations!

Li Huaide was suddenly struck by a realization: these design drawings were far more than just helping to make a cream cake.

So he went to see his father-in-law.

Of course, Zhang Dabiao was also testing Li Huaide with his words. He wasn't going to talk about copyright now, since there's no such thing as copyright in China.

Press-to-energy conversion—that's no different from starting a fire with a bow drill. Zhang Dabiao had watched a few episodes of wilderness survival, and this was just a small gadget.

Therefore, this thing doesn't have any patents. Applying for patent protection for its design is impossible in China these days.

He just wanted to throw him out there to see Li Huaide's reaction. If it really brought benefits, and Li Huaide was willing to include him in the game, then things would be much easier later on.

But if he's also killing the goose that lays the golden eggs, then we can just stop cooperating in the future; the loss won't be that great.

In addition, Zhang Dabiao also needs to be able to draw three-view drawings and has the "habit" of having ingenious ideas. This needs to be witnessed and endorsed by an official identity so that people can accept it if he takes out some good things from his old home in the future.

So he didn't take these things seriously at all and gave them away "casually".

Then, on the morning of Xu Xiaoling's birthday at the end of March, Li Huaide personally and cheerfully delivered the tools and oven to Zhang Dabiao.

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During this period, he used his own grain and grain coupons to hire several senior workers and researchers from the steel rolling mill to work overtime and get the product out. And you know what? It was actually surprisingly easy!

However, the yield rate was very low because Zhang Dabiao's design drawings were too detailed.

In addition, we had some foreign experts and guests try out the small fan, and everyone really liked this little gadget!

Convenient, easy to use, and aesthetically pleasing!

The prices are acceptable: a small fan costs 5 yuan, a press mixer costs 20 yuan, and a hand-cranked egg beater costs 20 yuan!

It's not expensive to exchange for foreign currency, and it's also beautiful and exquisite.

But the push-button flashlight was rejected because it shook too much. Various countries have hand-cranked generators and lights to deal with natural disasters, so this thing was useless.

A regular stainless steel whisk (ladle) can be made in any factory, and it can't be exported, so you can just keep it for your own use.

Li Huaide's plan to have people conduct experiments to inquire about user satisfaction and price acceptance was cleverly leaked by his father-in-law.

Therefore, the Ministry of Light Industry directly decided to start production and build a factory!

It's rare to find industrial products that even foreign guests appreciate, products that can generate foreign exchange. If not now, when?!

It can earn foreign exchange and provide employment opportunities!

Moreover, it requires no technical skill or special machinery; it can be built entirely by hand! This is a typical low-tech, labor-intensive industry, but with high value—

This is a political achievement!