119: When the country is in dire straits, the people are at peace.

When the massive body of the golden dragon appeared on the set, the shock of witnessing it firsthand was indescribable; everyone's goosebumps rose at that moment.

Shock!

Surprise!

Emotion!

The dragon is a totem flowing in the blood of Huaxia Country people, a spiritual pillar that has spanned five millennia of their history.

Historically, no one had ever seen a true dragon.

But today, it appeared before everyone's eyes!

"A nine-clawed golden dragon! Is this a nine-clawed golden dragon projected onto the paper voucher using a light source?!"

"Oh my god! This dragon is too realistic! The first time I saw it, I felt like it was right in front of me! It's so shocking!"

"This shouldn't be a 3D holographic projection, right? The dragon looks flat."

"Nonsense, of course it can't be 3D! This is the 'shadow-to-image' technology Young Friend Su mentioned! But even if it's not 3D imaging, this anti-counterfeiting technology is too cool! I never imagined anti-counterfeiting on paper vouchers could be done this way!"

"Look closely, everyone! There seem to be small traditional characters on the dragon's scales? Is it the Tao Te Ching?"

"Holy cow, there really are characters, but I can't understand what they say!"

On site, exclamations and discussions echoed throughout the entire venue.

Even Anti-Counterfeiting Technology Expert, who had studied anti-counterfeiting technology for many years, felt his heart pound uncontrollably when he saw the golden dragon descend.

As a seasoned expert with rich experience in paper voucher anti-counterfeiting, Su Yu's presentation today also broadened his horizons.

Shadow-to-image technology.

Before this, not to mention him, probably no one in the world had ever thought of using such a method for paper voucher anti-counterfeiting.

In the live broadcast room, millions of netizens and fans also widened their eyes at this scene.

They didn't perceive it as clearly as the live audience, but the shock brought by the golden dragon's phantom was no less.

However, online viewers quickly raised a question.

"Strange, shouldn't shadows be black? Why can Young Friend Su's projection display the golden dragon's color and all its details? Even the characters on the scales are clearly visible. How is this done?"

Su Yu looked at the questions in the bullet comments and snapped his fingers.

"That's right, some observant viewers have already noticed this problem. They're asking why a shadow also has color and details."

"Because that's the difference between 'shadow-to-image' and ordinary projection."

"The area depicting the mythological beast's pattern is not made of traditional paper material. The paper here has been specially treated with a unique spraying process, making it translucent while also embedding fluorescent materials into its interior."

"This way, even with normal light shining through, the complete mythological beast pattern can be projected."

"The further the light source is from the banknote, the smaller the projected dragon shadow. The closer the light source is to the banknote, the larger the projected dragon shadow."

As his voice fell, Su Yu had, at some point, returned to the display stand.

As the other three light sources lit up in the dimly lit center of the stage.

In an instant, the giant Black Tortoise, the divine Vermilion Bird, and the striped White Tiger appeared one after another beside the golden dragon's phantom.

Thus, the four great mythological beasts were gathered together.

The phantoms, with their awe-inspiring radiance, bared their fangs and claws, each displaying its divine power, instantly transforming the originally dark stage into an ancient battlefield.

The audience held their breath, their scalps tingling.

Looking up at the direction of the four great mythological beasts' phantoms, it was now difficult to describe their feelings in words.

Indeed, Young Friend Su did not choose to apply such cool anti-counterfeiting technology to just one paper voucher, but rather to the entire set of paper vouchers.

This is truly the exclusive anti-counterfeiting technology of their Huaxia Country!

Even if foreigners imitate it, they can only grasp its form but not its essence.

What if projection technology can be cracked? Can you accurately reproduce the four great mythological beasts of Huaxia? Do you know what the ancient Chinese characters on the golden scales represent? Can you draw the unique charm of the mythological beasts?

These things, besides the people of Huaxia, besides Su Yu, probably no one else in the world can deliver such a masterpiece.

Moreover, this is only one of thirty-four anti-counterfeiting technologies on the paper voucher.

On site, the murmuring discussions continued for nearly fifteen minutes before gradually subsiding.

In the center of the stage, under the spotlight, Su Yu closed his eyes, patiently waiting for all sounds to cease.

A moment later, the recording venue returned to silence.

Su Yu also opened his eyes at this time and spoke slowly.

"Next, the second anti-counterfeiting technology I will demonstrate is also my own creation, and I have named it 'Temperature-Controlled Color Change Technology.'"

"I believe that as the most widely circulated currency at the time, and one of the most common things in our daily lives, paper vouchers should not only have a single function and value."

Anti-Counterfeiting Technology Expert's eyes lit up at these words, as if he understood something.

"Young Friend Su, do you mean?"

"You also added other capabilities to the paper voucher that are compatible with anti-counterfeiting technology?"

Su Yu smiled slightly.

"Exactly!"

"This second anti-counterfeiting technology, in addition to identifying the authenticity of the paper voucher, can also sense the ambient temperature and display it in real-time."

Sensing ambient temperature and displaying it.

At first glance, isn't that just the function of a thermometer?

Anti-Counterfeiting Technology Expert's eyes gleamed even brighter.

"I believe everyone has heard of weather bottles, right? Weather bottles are said to predict wind, rain, and weather changes, but that's not actually the case. Their principle is very simple."

"Water, camphor, alcohol, potassium nitrate, and ammonium chloride—these five substances are mixed together. Because camphor is soluble in alcohol but not in water, and water and alcohol are miscible, weather bottles often exhibit crystallization phenomena accompanied by cooling."

Su Yu paused, then continued.

"I have subjected this phenomenon to special extraction and refinement, and ultimately applied it to the fluid ink stains on the paper voucher."

"This way, the fluid ink stains are no longer just aesthetically pleasing liquid characters, but have become a truly functional temperature measuring device."

"If you observe closely, you can see that within the four characters for 'peace and prosperity of the country', there are actually tiny linear scales. The fluid ink stain will also change on its own when it senses changes in the surrounding temperature."

"When the gold powder in the ink stain rises to the corresponding scale, everyone will be able to intuitively see the surrounding temperature conditions at that moment."

As the anti-counterfeiting function introduction concluded.

On the judging panel, Mr. Liao and National Landscape Painter and Design Specialist suddenly exchanged glances.

At that moment, the two elderly men, both in their sixties, seemed to read a different meaning in each other's eyes.

Su Yu's design of such an anti-counterfeiting technology seemed useful, yet for people of the current era, it was more show than substance.

After all, thermometers are not something people would use unless under specific circumstances. If people want to know the weather temperature, they can just check the weather forecast, which also provides early predictions.

Given this, why would Su Yu still place this function within the four gilded characters?

The answer is simple.

Because of his patriotism, because of his national righteousness.

And even more so, because this young man hopes to constantly sound an alarm for all Huaxia Country citizens.

Don't forget that era!

It was the hardships of their predecessors that brought about the peace and prosperity of the country in this great nation today!