The poor little fox was stimulated by Liu Fei and depressed all night, and the next morning he pulled his face and held the blank homework book alone to do the questions.

Liu Fei sneered.

The little fox is just too lazy, lying on the sofa every day like a salted fish, and he is too lazy to jump when he pokes it.

This bear child is just underwhelming.

If the blow can arouse Liu Rui's fighting spirit, Liu Fei is willing to take on this heavy responsibility.

On the contrary, Liu Mingshan always felt uncomfortable in his heart.

Both children should have been happy to work so hard, but when he thought of the previous urine sex between the two, he began to worry about whether they were working together to do things.

It's really hard to be a dad.

I was struggling when there was a knock on the door outside.

Liu Mingshan hurriedly unbuttoned his apron and came out of the kitchen.

The wife went out with the eldest brother's family, and Liu Mingshan took on the responsibility of cooking for a group of children.

As soon as he opened the door, he was an old man with an extraordinary bearing and a tall figure.

"Hello, who are you?" Liu Ming felt that this person was raw.

The old man smiled kindly, but he could still see the aura that came with being in a high position: "Hello, this is Lin Guodong's family, right? I am a colleague from his unit." ”

When Liu Mingshan heard this, he hurriedly let people in, his eldest brother's personality was a little boring, and it was rare for colleagues to come to the door.

"Guo Dong has gone to visit relatives in the 12th district, do you think I should call him?" Liu Mingshan felt that the old man's identity should be unusual, and it was best to let Guo Dong come back as soon as possible.

"Hehe, no, no. The old man waved his hand and asked with a smile: "You are Guo Dong's brother-in-law Liu Mingshan." ”

Liu Mingshan had never seen much of the world when he worked in the factory all day, nodded a little restlessly, and then hurriedly said, "You rest, I'll pour you a glass of water." ”

The old man waved his hand: "No, no, I'm here today to deliver something, and I'll visit you by the way." ”

Liu Mingshan was a little blindsided, what were the people from the Guodong unit doing when they visited him?

The old man is none other than the old man.

Seeing Liu Mingshan's inexplicable appearance, he knew that Liu Fei and Lin Guodong's mouths were very tight, and even their families didn't know the situation.

That's fine, before Liu Fei advanced to the transcendental, one more person would know about it, and there would be more danger.

"What about Liu Fei?

Liu Mingshan's anger has not subsided: "This bear child is in trouble, let me study in the house." ”

Old Man Yu nodded silently, another purpose of his visit this time was to understand what kind of parents can cultivate a genius like Liu Fei.

It seems that they do have a set, if a baby like Liu Fei is in his own home, he must not be spoiled by the whole family.

Look at other people, such a great son said that if he is confined and confined will be confined if he is confined , this is the reason why Liu Fei can become a talent.

The old man was thinking in his heart whether he should give his daughter a reminder, and it seemed that the management of Luo Yin's little girl should be stricter.

Old Man Yu sighed with emotion, and he patted Liu Mingshan on the shoulder: "You have educated a good child." ”

Liu Mingshan: "???"

Is this a compliment or a curse, a curse?

Before the words fell, Liu Fei came out.

"Yo, why don't you say hello when you come. Liu Fei looked surprised.

Old Man Yu laughed: "How can I contact you if you don't have your mobile phone on?" Just go directly to the door to visit, and meet Brother Liu by the way, it's a little abrupt. ”

"Hey, don't dare to be it, you can just call me Xiao Liu. Liu Mingshan didn't understand why the old man was so polite to him, and he was afraid that he was not the leader of the Guodong unit, so he could not offend as much as possible.

"I've caused some trouble lately, so it's shut down. Liu Fei opened the refrigerator, took out two bottles of juice by the way, opened one bottle by himself and handed the other bottle to Old Man Yu: "Dad, it's all your own people, you don't have to be so polite, this is my grandfather." ”

Old Man Yu took the juice and smiled.

Liu Mingshan again: "???"

Could it be that my wife has a father outside behind her back?

Yu Chengwen took out a dark green box from his bosom, with fine gold wire stripes on it, and the curves of the stripes artistically constituted a Chinese character "Luo".

He stroked the box with complicated eyes, and handed it to Liu Fei for a while: "I have carried this box with me for thirty years, and now it belongs to you." ”

Liu Fei's eyes lit up, it seems that this is a mathematical treasure!

He thought that this kind of treasure would be the kind of golden and blind dog eyes as soon as it was born, but he didn't want it to be so ordinary.

As soon as Liu Fei took over, he immediately understood that this thing was not as simple as it seemed on the surface.

First of all, the weight of the box is extremely large, and with Liu Fei's current physical fitness, he almost softened at the moment he took it.

Secondly, the aura fluctuations at the beginning of the hand were significantly enhanced, and there seemed to be a whisper whispering.

If you listen closely, you can probably tell that it is some mathematical formula.

"Open it and take a look. Old Man Yu said with a smile.

Liu Fei opened it, and inside was a fountain pen with a green light flashing and as clear as a jade god.

The pen is full of brilliance, and there is a faint invisible glow rippling out, and the green glow surrounds the fountain pen, as if it has become the embodiment of knowledge.

A picture suddenly flashed in front of Liu Fei's eyes.

A long-haired woman who exudes intellectual beauty sits at the table, her face is cold, but she is not rejecting people thousands of miles away, she is surrounded by vast crystal green, and her every move seems to be full of mathematical beauty, making people feel like a spring breeze and a clear mind.

Liu Fei was shocked: "What did I see just now?"

He was sure that the vision was indeed in his mind.

"Roy. The old man had memories in his eyes: "My closest comrade-in-arms, the youngest doctor in the school of mathematics-mathematical logic, and a rare theorist, her battlefield should not be there......"

The old man looked sad and did not continue the topic.

He pointed to the pen and said, "This is when she was studying the deductive logic method, she stimulated the aura resonance and made this pen a treasure." Presumably, Luo Yin also told you some of its functions, in addition to improving mathematical thinking ability, it also comes with a 'set of axioms' paradox protection system, which defines a protective limit in the form of mathematical logic paradoxes. ”

That is, if A and A are hostile to each other, then if A ∈ A, then A∉A is derived, and if A is said to be ∉ A, A∈A is derived. Any unilateral judgment will lead to a conclusion that contradicts it. ”

The old man paused, and when he saw that Liu Fei could understand what he meant, he continued: "The direct result is that once any creature is judged to be hostile to you on the battlefield, there will be a logical confusion within the set, causing the logical paradox that 'I must kill me in order to kill you'.

Of course, that doesn't mean you don't have to do anything. If you want to make the other party have a logical paradox, you first have to attack it mathematically, so that it becomes a point in your set system in the mathematical definition. ”

Liu Fei is also a master of 90% of high school mathematics, and quickly understood the subtlety of this protection.

"That is, I first define the enemy as part of my mathematical system by means of mathematical strikes, and then the logical paradox will take effect. The war of the transcendents is simply incredible. ”

"And the people who set up this system are very powerful, and things that were supposed to be reasonable, such as 'things made up of all sets', cannot be discussed in the set theory system because of the set paradox. Once you fall into the logical trap, it's hard to get out of it in a hard way, and it's really a master......"