Rebirth 1999: Opening up the era of black technology

Bang!

A piece of chalk hit Chen Xiao on the head.

Teacher Liao frowned and raised his voice a bit.

"Tomorrow is the first clinic, so everyone should cheer up. What I just talked about was a score question, but many of you can't afford it. Let's continue to look at this question and find the distance between x-2y=0

The equation of the smallest circle..."

Chen Xiao shuddered and came back to his senses to look at everything in front of him.

A teacher wearing thick glasses wrote math questions on the blackboard, and on the wall next to him hung a countdown to the college entrance examination - December 16, 1999, 205 days before the college entrance examination (the college entrance examination in 1999 was in July).

Chen Xiao was a little confused. He just drank a little too much and stayed in a hotel for one night. How come he was in 1999?

Chen Xiao opened the mottled iron pencil case on the table and used the reflective lining inside the pencil case to shine on herself.

He still looks the same, but much younger.

My name is still Chen Xiao, but my experience is completely different!

Before Chen Xiao was reborn, he resigned from a scientific research institution and then started his own business. He eventually became the CEO of a technology group with billions of assets. His industries involved medical health, artificial intelligence, etc. Although he was unmarried, there was no shortage of women.

The memory of this body immediately flooded into Chen Xiao's mind. Although the current Chen Xiao has the same name and appearance as himself, his life experience is completely different. Although his grades are good, his family is more difficult.

His father, Chen Qiang, was an ordinary worker at Jiangcheng State-owned Machinery Factory, and his mother, Lin Hui, had no job. She set up a stall outside the community of the machine factory to sell some breakfast and stationery. Life at home was very tense.

Before Chen Xiao was reborn, one of his parents was a university professor and the other a doctor, but they died in a car accident very early.

The timing is totally wrong too!

Before rebirth, Chen Xiao was only born in 2019!

If we use comparative metaphysics to explain it, Chen Xiao was reborn into a parallel world, and time and space were somewhat confused.

Chen Xiao looked at this strange era and was confused!

He doesn't want to be reborn! This time he has changed from a big boss to an ordinary high school student, starting from scratch?

Chen Xiao is tired just thinking about it!

Mathematics teacher Liao looked at Chen Xiao who was distracted, slammed the table and asked: "Who knows this question?"

He has high hopes for Chen Xiao. Although this boy's family conditions are not good, he works hard and is a good student in school.

Teacher Liao waited for a long time and found that no one raised their hands to answer. The students looked at the question in confusion and didn't know where to start.

He called his name: "Chen Xiao, come up and answer the question."

Chen Xiao was still confused at the moment, but when the teacher called his name, he walked up anyway.

There is a math question on the blackboard: [Suppose a circle satisfies: 1 cuts the y-axis and the chord length is 2; 2 is divided into two arcs by the

In a circle, find the equation of the circle with the smallest distance from the center of the circle to the straight line ι:x-2y=0.】

This question is very simple! The mathematics questions in the college entrance examination in 1999 in this era are much simpler than those in my own time!

Moreover, Chen Xiao was originally engaged in science and technology work, so mathematics still did not trouble him.

Chen Xiao picked up the chalk and wrote the answer on the blackboard: "Suppose the center of the circle is P (a, b) and the radius is r, then the distances from point P to the x-axis and y-axis are │b│, │a respectively.

│……”

His chalk writing was smooth and his handwriting was powerful. After a few minutes, Chen Xiao finished writing the answer.

The classroom was very quiet in the afternoon, and the sound of everyone breathing nervously could be heard in class.

Teacher Liao stood behind Chen Xiao, looking at Chen Xiao's answers and nodding his head! He is indeed his favorite student! The whole class can't do it, only Chen Xiao can!

The girl Shen Wei, who was sitting not far in front of Chen Xiao, couldn't take her eyes off Chen Xiao's steps to solve the problem, and quickly compared it with her own thoughts.

Then Shen Wei bit her lip, took out her notebook and recorded all the answers.

However, Shen Wei's deskmate Su Qiao looked uncomfortable and muttered without knowing what he was talking about.

When Chen Xiao put pen to paper, the whole class burst into warm applause!

"It is indeed Chen Xiao! Only he can answer it."

"This question is so difficult! I can't understand the steps Chen Xiao wrote to solve the problem."

Just when Chen Xiao was about to walk down, some information suddenly came to his mind.

[Influence 3, cumulative influence 3.]

[Technology tree: medical biology (not lit); physical and chemical machinery (not lit); computer information (not lit)...]

[Note: When your influence increases to a certain value, you can unlock a bit of future technology. Unlocking the first technology requires 20 influence points. 】

Chen Xiao was a little confused.

Emotion itself was not only reborn in 1999, but also brought with it the future technological system.

How can we increase our influence?

I just went to the podium to answer questions in front of many people and amazed everyone, which increased my influence.

If the next exam results in better results for the whole class or even the whole school, will it gain more influence?

In 1999, this was the eve of a big storm.

The stock market, real estate, Bitcoin, and Internet technology are exploding. As long as you catch any of these trends, pigs can fly into the sky.

Teacher Liao clapped her hands very happily and said, "Chen Xiao, you go down. Remember to go to bed early at night, otherwise you will not be energetic in class."

Chen Xiao also wanted to gain some influence and said: "Teacher, I have another solution."

What!

Now not only Teacher Liao, the whole class was shocked!

It’s awesome to be able to write down a solution to such a difficult math problem! Chen Xiao actually has a solution!

Shen Wei's hands were frozen in the air, and she looked up at Chen Xiao.

Su Qiao's face was even more ugly. He was still thinking about the solution that Chen Xiao just gave him.

Chen Xiao continued to write on the blackboard: "Solution 2:... Treat it as a quadratic equation of b. Since the equation has real roots, the discriminant is non-negative, that is, △=8(5d2-1)≥0... "

In five minutes, Chen Xiao finished the second solution.

Teacher Liao was full of praise while looking at the second solution! This method is more ingenious and simpler than the first one, but the applied knowledge points are more solid and varied. This time Teacher Liao took the lead in applauding!

"Very good! Our classmate Chen Xiao is really good! Mathematics is not a simple calculation, but a way of thinking. Please actively learn from Chen Xiao!"

The students were discussing:

"That's awesome! If Chen Xiao's English was better, he could be the top scorer in the college entrance examination."

"Master of Mathematics! So awesome!"

Shen Wei watched Chen Xiao return to her seat. She fiddled with her fingernails and felt very uncomfortable. Why didn't she even know a solution?

[Influence 6, cumulative influence 9.]

The buddy Jiang Wei behind him also gave Chen Xiao a thumbs up: "Xiaozi, you are so awesome!"

Teacher Liao continued to teach, but Chen Xiao stopped listening.

He took out a notebook and recorded some important things on it. If the history of this world is basically the same as that of his previous world, even if the technological level is different, certain outlets will definitely appear.

He recalled what he had learned from reading news, biographies, etc., and wrote down some important things: the establishment of Penguin Company, 361 anti-virus software for free, real estate reform, Ali selling goods online, the birth of Pingguo mobile phone, and events in the history of A-shares

Several bull and bear markets...