Mathematics originated in the early productive activities of human beings, and it is a tool that cannot be seen by the eye. The pen "Fun" Pavilion www.biquge.info human beings began to break away from barbarism from learning to use tools, and truly moved towards civilization because of the mastery of mathematics.

The basis of mathematics is numbers, one, two, three, four, five, which seems to be ordinary but is the foundation of the mathematical edifice, no matter how complex the formula is, it is inseparable from numbers, and mathematics without numbers is meaningless.

One, two, three, four, five, whether it is the original world or the current world, the vast majority of people know that the meaning they represent, is the consciousness that has been educated or subtly formed since childhood, but few people can accurately express them. One apple and two apples can explain one, two, three, four, five, but it can't explain all the numbers, but it only cultivates the awareness of making up bigger numbers in the brain.

Why does one plus one equal two? This question puzzled countless mathematicians until Piano's axiom came to the fore.

Piano determined the system of natural numbers with precision and without objection through the five axioms, and determined that the sequence of natural numbers is one, two, three, four, five, not one, two, three, three, five, not one, two, three, four, five. The first-order arithmetic system is determined by determining the order of natural numbers, and the Piano axiom is also known as the Piano arithmetic system.

One plus one equals two because in a sequence of natural numbers two is the only successor of one, not one, not three, not four.

The five fundamental rules of the "Seed of the Dao" correspond to the five axioms of Piano's arithmetic system, the root system of the "Tree of the Dao", the core of his future Dao heart.

Five slender radicles stretch their weak waists in the shell of the "Seed of the Dao", break through the shell little by little, and plunge into the soil in all directions, the germ straightens the waist pole, breaks through the soil, and uses the number as the foundation to pursue the precise "Tree of the Dao" officially takes root in the Enlightenment Peak.

"Brother is up!"

The door was slammed, Su Chengye was distressed, and hurriedly got up to open the door, outside the door, Yao Qingqing raised his face and held a red slap, "Does your hand hurt, don't be so hard, my brother can hear it." ”

Yao Qingqing looked up and grinned, his red little hands tugging at his clothes, "It's almost time to go to school, brother, let's hurry up to the county school, Sister Zhong will scold if you're late." ”

It was still dark, and there was a little light on the horizon, Su Chengye subconsciously took out his mobile phone and shook his head slightly. It's about four or five o'clock in the morning, and the exact time is unknown, but it's certainly not the time to go to the county school, and it's still very early.

Yao Qingqing's little caution couldn't hide from him, Su Chengye had no choice but to accept Zhong He's "invitation", Yao Qingqing was very excited, and she held her head high at home, it is not difficult to imagine how she showed off to her friends in the county school. Today is Su Chengye's first day to go to the county to learn to be Mr. Mathematics, and it is natural for her to get up early to urge.

Wash, make breakfast, eat breakfast. Yao Qingqing was puffed up, and grabbed her small "toothbrush" to help when Su Chengye was slowly brushing her teeth with willow branches dipped in salt, and the frightened Su Chengye didn't dare to tease her anymore, so he quickly solved breakfast and took her to the county school.

Zhong He was waiting at the gate of the county school, and when he saw him, he nodded slightly, and when he saw Yao Qingqing, he smiled and wanted to hug her, but Yao Qingqing refused, holding Su Chengye's clothes tightly, she must let everyone see that Mr. Shushu is her brother, and he will also make marshmallows for pairs.

Su Chengye walked into the school, and the whole school was boiling, dozens of pairs of bright eyes looked at him, and their immature voices shouted their worship, "Marshmallow, marshmallow......"

Yao Qingqing raised her head higher, and her pink mouth smiled uncontrollably.

He didn't expect that he would be treated like this, he didn't know what to do, but Zhong He was used to it, and frowned slightly with a cold face, "It's all quiet, and no matter how noisy it is, it's all hand-fighting." ”

In the county school, Zhong He is the queen, and the little sparrows are more well-behaved than mice and cats, and the noise disappears in an instant.

"All back to their seats. ”

There was a sound of tables and chairs moving and colliding, and the little sparrows were sitting on their lapses, their waists straight, and their eyes not squinting.

The previous math master had just finished teaching them the multiplication formula, and a few of them were able to memorize it, while most of the students were barely memorizing it and needed to strengthen their recitation. What Su Chengye has to do is very simple, lead the little sparrows to recite the multiplication formula, and then check their recitation, and for those who have memorized, teach them to multiply large numbers frequently, the so-called commonly used large numbers are two digits.

In fact, Su Chengye's teaching task is more focused on mastering their learning progress, and there is nothing difficult about others.

"One by one, one by two, one by two, two by two......"

Uniform voice, in a trance, Su Chengye thought that he was still on the earth, just outside the classroom of a certain elementary school, in his hometown where he didn't know, could he still go back, his parents and sister must be very sad when they heard the news of his death, would they have a chance to see them again.

However, it didn't last long, and less than a quarter of an hour after Zhong He left, the little sparrows immediately rebelled, threw away the books, pushed away the tables and chairs, and ran over on their little short legs to surround Su Chengye, "Tell stories, tell stories." ”

He didn't have Zhong He's prestige, it was useless to talk for a long time, and it was useless to threaten the hand board, just not knowing what to do, Yao Qingqing was powerful, slapped the desk hard, and his little hands were red, "Go back to your seats, otherwise I will go to Sister Zhong and let Sister Zhong beat your handboard." ”

Probably Yao Qingqing didn't have a fox and fake tiger before before, and the little sparrows ate her very much, and they all scattered, turning back three times in one step, reluctant to give up.

"You said your brother would tell us stories, but you didn't keep your word. ”

The seats in the school are roughly arranged according to the learning progress, with the front row being high and the back row being low. There was a separate seat in the last row, and the owner of the seat was a black little fat man, tall and strong, sitting on the chair as tall as others standing, and looked at Yao Qingqing angrily.

"My brother can tell stories, but you have to be obedient, don't mess around, don't make a sound, otherwise my brother won't say it, right, brother!"

Yao Qingqing winked vigorously at Su Chengye.

Su Chengye smiled bitterly, you are the culprit after making trouble for a long time, and it is not impossible to tell a story, but how can Zhong He explain it, "She has the best relationship with Qingqing, since it is Qingqing's request, let Qingqing explain to her." ”

"From now on, whoever is speaking out I won't tell stories. ”

There was no sound in the classroom, even Yao Qingqing didn't dare to make the slightest movement, and Su Chengye had a sense of accomplishment.

What stories should be told to them, there are many stories that can be told in the four famous novels, martial arts novels, but he doesn't think it's particularly suitable.

What did you like to watch when you were a child?

Su Chengye's familiar singing voice echoed in his head, and he almost hummed along.

"There is a Bao Qingtian in Kaifeng, the iron mask is selfless and loyal and traitorous, the heroes of the rivers and lakes come to help, and the dynasty and Ma Han are by his side"

There is a black face Bao Zheng with a crescent moon on his forehead, Gongsun Ce, who is full of wisdom, Zhan Zhao, a royal cat with superb martial arts, Zhang Long and Zhao Hu, a loyal dynasty horseman, and a three-mouthed guillotine, a dog head who beheads the bullies, a tiger head who kills corrupt officials, and a dragon head who beheads the emperor's relatives. Before crossing over, his memory was just an ordinary person, and the specific plot of the TV series had long been forgotten, but these things were always deep in his mind.