Deng Yuqi and others were wondering, but they saw Li Qingyu stretching out his hand, as if he picked up something from the ground, and then put it in front of him to take a closer look.

"Boss, what are you looking at? Why didn't I see anything?" Xiaozhu asked in confusion.

The others were also confused.

They saw nothing in Li Qingyu's hands! It seemed as if Li Qingyu was just performing a vain performance, or was enjoying a certain air in front of him.

Li Qingyu looked up at the confused people, suddenly laughed and said, "Hehe, you really didn't see anything?"

"Boss, will you say next, anyone who can't see the things in your hands is stupid? I tell you, I actually saw it, I really saw it!" Deng Yuqi said with a chuckle.

Li Qingyu rolled his eyes and said angrily: "Get out of your stinky duck egg! Do you think this is the emperor's new outfit! Okay, since you saw it, then tell me, what did you see?"

"I saw the boss and sister-in-law having sex..."

Comrade Deng Yuqi's desperation attributes broke out again. This guy made a random mistake, but didn't notice that Lin Jingya was by his side!

Lin Jingya grabbed his ear and shouted, "Oh, Old Deng, I haven't seen you for a few days. I've grown my skills. I dare to make jokes!"

"Oh, sister-in-law, spare your life, please spare your life, sister-in-law..., please spare your life, I will tell you a secret, a secret about the eldest son and Xiaohong..." Deng Yuqi howled like a pig slaughtering his ears, shocking the entire villa No. 5 apartment buzzed!

Lin Jingya then let go and asked with a smile: "Who is Xiaohong? What a secret, say..."

Li Qingyu's face turned dark in an instant, and he quickly said, "Xiaoya, don't listen to his vernacular. Xiaohong was a stray dog ​​he adopted when he was a financial expert. Because he brought it to the dormitory, he violated the dormitory management regulations. Later, he was knocked to death by the dormitory manager and took it home to stew. He also gave us two dog legs. If you don't believe me, ask Xiaozhu and Lao Liu."

Seeing Liu Jiayi and Xiaozhu nodding, Lin Jingya couldn't help but angrily pulling Deng Yuqi's ears. Deng Yuqi hid behind Li Qingyu, but was stopped by Li Qingyu suddenly stretched out his left hand!

"Don't run around! Danger! I have a sword in my hand, an extremely sharp sword!" Li Qingyu said.

Deng Yuqi's nervous face changed, but when he saw that Li Qingyu didn't even have a shadow of the sword in his hand, he smiled in a naughty way: "Oh..., this must be the sword of the emperor wearing new clothes! Wear invisible clothes, hold invisible sword, and pretend to be invisible pussy. Boss, I suddenly remembered that the last time you were in the company, wasn't you just wearing the emperor's new clothes? Poor we were all too stupid, I only saw a small Nen, or a woman with a cartoon..."

Li Qingyu's nose was almost crooked!

Damn, Acheng and Axin are honest. This guy is now in a position to destroy the situation again. He will take any pot without opening any pot!

Li Qingyu raised his foot and was about to kick him, but he saw that this guy had already hidden behind Tang Sixin and made a face at him.

He tapped him twice with his hand and said hatefully: "Okay, Lao Deng, just do it! Your bonus this month is gone!"

"Ah? No..., boss, you have to be kind..." Deng Yuqi's face suddenly turned into bitter gourd.

"That's a good person! Being kind to a bitch like you is a crime against good people! Don't you believe that I have a sword in my hand? Let's see how sharp the sword is now!"

Li Qingyu said, picking a long hair from Lin Jingya's shoulder with his left hand, and his right hand was flat, as if there was really a sword in his hand. Then he raised his left hand to the diagonally above his right hand, and easily, his long hair floated down.

Just when the long hair fell directly in front of Li Qingyu's right hand, it suddenly turned into two pieces strangely and continued to float and fall to the ground.

Then Li Qingyu's wrist sank and his right hand reached the bottom of his hair again. Everyone saw that the originally two pieces of hair strangely turned into four pieces!

Then Li Qingyu repeated the movement just now, and his hair turned into eight pieces!

Finally, Li Qingyu twisted his right wrist slightly and sank again. Everyone saw that all the eight cut-off hairs were quietly suspended in the air without moving!

Although the hair is very light, no matter how light it is, it will not hang in the air without moving! Now these eight pieces of hair are actually magically suspended in the air, and there is only one possibility------ something holds them up!

Until this time, everyone believed Li Qingyu's words. Li Qingyu did have a sword in his hand, one that could not be seen, but had short hair and extremely sharp sword!

Everyone was shocked!

An invisible sword-------This is simply a killing weapon!

"I~~~~~ Oh my god! This is really a sword! What kind of material is this? Why can't we see it?" Xiaozhu stared at Li Qingyu's hand with wide eyes, trying to find the sword in Li Qingyu's hand, but he still couldn't see anything.

"This should be a material with excellent light transmission, better than glass, and its refractive index is extremely close to that of air! Because we are under the light after all, you can't see it. If you look closely in the sun, you should see a clue."

Li Qingyu was just talking, suddenly snapping his fingers and said, "There is a way. Let's observe in another way, and you will see it."

While speaking, he walked to a large fish tank by the wall and put his right hand into the fish tank.

A miracle suddenly appeared!

Everyone finally saw the sword in Li Qingyu's hand!

This is a transparent sword, about one meter long and about half an inch wide, as thin as a cicada's wings, and it is exquisite and transparent in the water, like a handicraft, but it is filled with a cold breath. Even the golden dragon fish in the water dare not approach it, but just bulged with goldfish eyes and watched curiously in the distance.

"Master, why can't this sword be seen in the air, but can be seen in the water?" Acheng suddenly grabbed his head and asked.

Tang Sixin and the other two also looked at Li Qingyu in confusion, wanting to know the answer.

Deng Yuqi and Lin Jingya showed a look of sensation on their faces. These four people are different from Acheng and Axin and Tang Sixin. Acheng and Tang Sixin have been practicing martial arts with their masters since childhood. They only learn Chinese studies in cultural courses. Arithmetic. Deng Yuqi and others are real college students!

It rolled over from the sea of ​​books and books in mathematics, physics, chemistry, biology, politics, history and geography!

Li Qingyu smiled slightly and said, "Acheng, Axin, can you see the air in front of you?"

Acheng and Axin shook their heads together and said, "No."

"If there is a bubble in the water, can you see it?" Li Qingyu pointed to the trachea that was supplying the fish tank. Bubbles were constantly rising at the end of the trachea.

"Of course!" Acheng and Asxin said immediately.

"When bubbles appear in water, the reason we can see them is because light shoots into bubbles from water, which will reflect and refract. The material of this sword is very special. Its refractive index is very close to air, and it is very transparent! So when this sword is in the air, it reflects very little light, so it is difficult for us to see it, but once it is put into water, you can see it." Li Qingyu said.

This involves some optical phenomena, and Deng Yuqi and others naturally understand it, but it is difficult for Acheng, Axin, Tang Sixin and others to understand it.

So Li Qingyu didn't explain much, just said: "You don't need to know why. As long as you know that this sword is not easy to be discovered in the air, but it is easy to be discovered in other transparent media. In fact, this sword has a mystery!"

As he spoke, Li Qingyu put his hands back into the fish tank, grabbed the hilt of the sword and gently squeezed it. Everyone saw that the sword in the fish tank suddenly became two!

Two identical swords!
Chapter completed!