"Is this the invisibility agent?"

Early the next morning.

Chu Yao saw the results of Lu Hongzhuang’s freshly-baked products.

A honey-like, translucent plaster, shimmering with rainbow colors, looks extremely beautiful.

It's very strange. The Night Demon Clan is all black, so how can they refine a rainbow-colored product?

Chu Yao immediately asked.

Slightly curious.

"The principle is simple. The reason why people can see an object is that the light reflected from it reaches your eyeball, thus forming an image."

"Well, the reason the invisibility agent is rainbow-colored is because its invisibility principle is very advanced—the theory of complementary colors. We know that when all seven colors are blended together, they form a transparent white."

"The invisibility agent doesn't make you turn white and transparent directly, because that's too difficult, and it's inconvenient to wear clothes. The Night Demons haven't solved this problem, so they've always been dressed in black."

"The theory of complementary colors can perfectly solve this problem. After applying the invisibility agent, no matter what color environment you are in, it can help you complement other colors. When it matches the surrounding colors, you will become transparent and invisible."

Lu Hongzhuang explained in detail.

Although Chu Yao didn't know the specific technical details, he understood the idea.

The Night Demon's invisibility is partly due to the fact that they can transform themselves into the color of the environment.

The theory of complementary colors is to use the color of the surrounding environment to fill in the missing colors of the other seven colors. After the seven colors are integrated, they will naturally become white and transparent.

Theoretically, this idea is really a different approach.

If you don't learn science well, you may not be able to figure it out.

To some extent, this invisibility agent can be considered a combination of science and practice.

"So...how do I use it now? Orally? Or?"

Chu Yao immediately prepared to try it.

"Take off your clothes."

"It needs to be applied all over the body to form bionic photoreceptor cells on the surface of the skin, similar to the characteristics of creatures like chameleons. The principle is roughly similar, but it must match human genetic characteristics."

Lu Hongzhuang said softly, expressionless.

Chu Yao glanced at her, silent, and also looked serious.

"Will you help me apply it?"

It feels a bit weird for some reason.

The corners of Lu Hongzhuang's mouth twitched slightly, but she held it back.

"What else?"

"Can you reach your back? And your hair."

"Hurry up! Don't waste time!"

Chu Yao: ...

Take a deep breath.

I feel inexplicably nervous.

"Can you apply it somewhere else first? Leave your underwear and I'll apply it myself."

Bang!

Lu Hongzhuang slapped his firm and plump buttocks hard, making a crisp sound.

"Are you ill?"

"If you don't apply it evenly, your whole body will be hidden when you look back, and only your butt will be exposed?"

Chu Yao: ...

Looking around, the doors and windows of the laboratory were all closed, and there were no surveillance cameras. After taking a deep look at Lu Hongzhuang, Chu Yao began to take off his clothes.

"Stand still, don't move."

After Lu Hongzhuang gave some instructions, she immediately became a happy painter with a big brush in her left hand and a writing brush in her right hand.

Chu Yao looked at his nose with his eyes and his heart with his nose, like an old monk sitting still.

The embarrassing theory of "as long as I am not embarrassed, you are the one who is embarrassed" has completely failed at this moment.

In other words, the theory itself is not invalid.

However, her attainments in this theory were inferior to Lu Hongzhuang's.

Chu Yao clearly felt that there was something wrong with his body.

However, the brushes and writing brushes in Lu Hongzhuang's hands were still steady and stable, without even a hint of pause or shaking.

Dip it in the invisibility agent and move it across every part of your body without missing a single spot.

The intensity remains consistent.

About ten minutes later.

Apply thoroughly to the body.

Lu Hongzhuang examined it in detail and nodded.

"Okay, put on your clothes."

Chu Yao put on his clothes silently, not knowing what to say for a moment.

Lu Hongzhuang didn't say anything, didn't even look at him, and remained silent.

A moment later.

"you……"

"you……"

The two spoke almost at the same time, but when they heard each other's voices, they took back what they were about to say.

"You speak first."

Chu Yao took a deep breath and tried to stabilize his aura.

Lu Hongzhuang glanced at him, her eyes calm and her tone flat.

"You try it now, it should work."

"When you're invisible, be careful not to get too close to large-scale, high-intensity psychic attacks. Also be careful to avoid other obstacles."

Following her voice, Chu Yao's mind moved, and he immediately entered the invisible state quickly.

The skin all over the body is undergoing changes that are invisible to the naked eye. Under the effect of the invisible element, the practitioner of the color-complementing theory disappears from sight.

Lu Hongzhuang reached forward, touched his body, then circled around it, examining it in detail, but couldn't see a single trace.

Only then did he nod with satisfaction.

"Okay, that's good. That's it."

She said the acceptance was passed.

Then walked out the door.

He talked while walking with Chu Yao on his back.

"It's quite big. Just remember to get a circumcision when you get back. You're already a grown man."

Then he quickly disappeared out the door.

Chu Yao, who had just appeared, was completely stunned.

I……

O(╯□╰)o.

…

Chu Yao chased after him.

Lu Hongzhuang had already disappeared.

I don't know if he is invisible.

Or has it gone far away?

In the end...

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