Tokyo's colorful buildings are like magical forests.

Standing on the edge of the cement of a building, Qiankong looked at the city. He looked a little crazy and said in a sick tone: "What kind of people in the world should we wake up?"

Then she turned her head and asked the person behind her who was scared and paralyzed in a tone of asking passers-by: "Hey, do you think adding a little blood can make people feel more awake?"

Behind Qiankong was a middle-aged man in his fifties with a stiff body spread on the ground. More than 60 tiny needles were inserted into his body, which pressed on blood vessels and nerves (all the needles penetrated into some acupoints), and it would be very numb and painful when he moved.

Qiankong had a needle-piercing gun in his hand that penetrated the ear hole. Just now she accurately opened the miniature space door. A section of the space door was near the human acupoint, and one end was on the needle-piercing gun muzzle. In this way, she subdued the man one by one.

However, the man in the suit was covered in sweat at this time and could only say, "No, don't kill me." Qiankong frowned and said, "Is the last words so boring?"

Qiankong walked over with an expression of "I can't stand you anymore". In the sky of the tall building, a one-meter space door opened, and the other end of the space door opened behind the man. The man turned back stiffly and looked at the space door behind him. The wind from the space door was chilly, and he could see the traffic flow as small as a beetle on the road more than 100 meters below.

Suddenly, he felt a pain all over his body and pulled out the needles one by one. He suddenly turned around and found that the shallow white leather boots raised his feet, and the power transmitted from his feet hit his chin.

Then, under the push of such a force, he fell into the space door. The other end of the space door was the high altitude between the two buildings.

A huge scream echoed between the tall buildings. More than ten seconds later, the man fell into a ball of you on the ground. Bright red blood sputtered on the road.

As for the wounds as big as the needle tip on his body, the coroner could not find it. Under such a huge impact force, these needle tip wounds would be covered by cracks created by the impact force. Judging from the forensic identification, the victim was not subjected to external coercion, there were no drug residues in his body, and there were no traces of rope binding on his body.

Qiankong put away the space door, then picked up the phone and said, "Your old man who was dead has been sent away very gently by me. Are you happy now?"

On the other side of the phone, the voice was lowered but the tone could not hide its excitement and fear, "Is it really dead?"

Qiankong smiled: "Do you still have feelings for your adopted father?"

The man on the other side of the phone quickly denied it, and then said in a defensive tone: "I have done so much, and I helped him grow the company step by step. In the end, just because of my small mistake, he would transfer the company to his incompetent son. This is his own fault."

Qiankong said, "You are such a poor dog. I will see the equity transfer tomorrow. Otherwise, I wouldn't mind letting you see your adopted father."

Qiankong hung up the phone and opened another space door and then flashed to the roof of another tall building fifty meters away. Qiankong's control accuracy of space jumping has become more refined.

This kind of fineness comes from her Eye of Time and Space has become stronger. The power of the dual effects of time and space is amazingly powerful, but Qiankong is both happy and frightened at this time.

The joy is because her eyes can see the length of the future longer, while the fear is because she is trembling. She knows what the power of time is connected to. And only Qiankong understands in this world that in just one year, the existence called the number of days has experienced how fast the rapid growth has been experienced.

Qiankong now sensed the explosion of the number of days again and walked out of the space-time gate for the fourth time. She opened the Eye of Time again, her eyes were confused, and she stuffed her fingers into her mouth. The saliva at the corner of her mouth flowed down the back of her snow-white hand, with a broken expression.

Part of the original intention of Lu An letting her go back was to let some people in the Snake Tribe suffer their own fruits. Qiankong did do this. She had become the leader of a huge dark force. Using her own means, the department she established had already had huge economic power. This teenage girl, who was very handsome, had firmly stood firm in the darkness and became a demon-level existence. But no one knew that when no one saw her, this indifferent person would become such a chaotic manifestation.

Power and strength are sometimes different things. They can kill and massacre people coldly, but they show attachments when facing stronger people. The willful and reckless Qiankong is now without anyone to restrain him, so from the perspective of many people, they can only see the side of Qiankong.

Qiankong was crazily chasing power and power that had previously been untouched, but in fact, various spiritual contradictions had already breeded in her, including Stockholm syndrome.

Lu An, who looks very cowardly on the outside, chooses to give in most of the time and chooses to reflect on himself, has no concessions in his heart from beginning to end, and still looks at the world carefully with "self" as the center. When the core is touched, there is no slight avoidance or concession.

In the final battlefield, I realized that self-survival is probabilistic, and did not compromise on this "self-lucky compromise" but chose to bear and face it, becoming the source of self-luck.

For example, in the face of uncertainty He Guang's probability of survival given to him, Lu An did not draw that prize. Instead, he chose to live again.

Faced with the redemption provided by Pan Ming by the high-dimensional projection, Lu An did not quietly and passively wait for the dead end of his history and hand it over to Pan Ming to redemption. Instead, he made every effort to leave a prologue to the Redeemer.

It is easy to show strength to the weak. However, it is not necessary.

Luan in Pudong never thought that there was an operation like air conditioning in the world.

Lu An was trying to get flat glasses in an eyeglasses shop at this time. The reason for running to the eyeglasses shop to buy glasses is very simple. Lu An found that his future college classmates all had four eyes. Wearing glasses is almost a standard for hard-working students.

In this world, when you listen to classes in class, finish your homework quickly after class, and then have time to pack your time to read free books, there are always fewer geniuses playing games. At least in the 22nd century, Luan had never seen such a genius, and all of these geniuses were sent to the Children's Palace to compete with geniuses of the same level.

Lu An considers that any unsociable characteristic in college may bring you more attention. For example, a bald person at the beginning of school will make the classmates remember themselves forever. Basically, the probability of a professor in class is definitely greater than that of other people. And you don’t want to skip classes.

Lu An picked up black-framed glasses, took a look in front of the mirror, nodded and satisfied, "I wear glasses and have the temperament of that person."

The outstanding people in Jiangnan always produce some powerful people. These powerful people also shine in this timeline. The one Lu An mentioned is Hua Luogeng, a great mathematician. There are only a few masters in the modern and modern scientific circles in China.

The subject Lu An was about to study was obvious. Lu An's emotional state: "I want to go straight to the crown of science - mathematics." When he said this, Lu An suddenly admired his foresight.

Long before entering the world of energy technology, Lu An chose this major from Ji Liu, and at that time he was considering the algorithm design of his first generation of guidance computers.

However, now, after more than ten years in the energy technology world, I remember many mechanical designs and industrial parameters clearly. On Lu'an, the application of guiding systems has made rapid progress just like the technological explosion in the 21st century. For example, Lu'an's mechanical wave computer technology has developed to the direction of large-scale integration of microbubbles.

If Lu An chose other subjects, it would probably be useful when choosing, but now it is suspected of taking the repetitive path. However, if you choose mathematics, it is definitely not outdated. Lu An chose according to the best subject when he chose it.

Of course, the best subject does not mean that employment is the best. On the contrary, employment in the mathematics department in this world is very unpopular.

But it does not mean that mathematics is not important. On the historical line where Lu An is located, in the process of canceling the compulsory foreign language exam, the positive debate said that many people do not use foreign languages ​​in their lives, and foreign languages ​​are used by those who dominate foreign trade.

The opposing public opinion once revealed the theory of uselessness of mathematics. Most people should cancel mathematics without using advanced mathematical knowledge.

Yes, in the 21st century, many people have no chance to use calculus, just like most people do not use foreign languages ​​because most people do not need foreign trade.

However, whether a discipline is useful depends on the needs of the market. If a country's industry is not tourism and international finance, the foreign trade talents needed are limited. However, if a country is industrial manufacturing, the mathematical talents needed are almost unlimited.

Starting from the mid-twentieth century, it is a pathetic not to use advanced mathematics, which means that the nature of your work belongs to the simple part and does not belong to the important work.

In the first half of the 21st century, there was a very important subject, and the applicability of the wheel was almost used in many technical fields. However, it was not included in high school physics, and even the theory of relativity and the changes in nuclear reaction proton beams were included. However, this subject was not written in - Fluid Mechanics.

The atmosphere and rivers on the earth are all fluids. Wherever there is fluid movement, this discipline, meteorology, ship design, automobiles, aircraft, aerodynamic shape, mixing of fuel and air in the engine, and spreading of pollutants. Most of the phenomena in humans' eyes occur in fluid environments.

But why doesn’t such an important subject appear in high school physics books? Because it’s too difficult, it’s too difficult to master the mathematics used in such a subject.

Let me briefly introduce what level of mathematics this subject needs to master.

First set up an xyz coordinate axis system.

On this coordinate axis, at any point of an air flow, the three division directions of the x-direction and y-direction z-direction can be used to indicate the true direction of the air flow.

But what happens when this airflow point encounters the impact of another airflow? Each airflow point will bounce directly in the reverse direction? It is definitely not a straight line and reverse direction.

Only in the vacuum situation will it bounce back. When you are in the vacuum situation, you sprinkle a handful of ashes. Each dust will bounce off like a bumper car after colliding with each other. But this is not the case in the airflow, but a vortex is formed between the airflows in different directions.

Just like smoking, it exhales a ball of smoke, and the edges of the smoke rub against the air, forming curved vortexes. How does this deflected vortex represent in the formula?

Originally, the airflow was subjected to external force in the y direction of another airflow. A deflection formula of x and y was used to represent the disturbance in this direction. Originally, the x-direction formula of x and z was used to represent the disturbance in the z direction.

Then the segment direction of y is also analyzed in this way, and the z direction is also analyzed in this way.

In this way, the coordinate system is used one by one, and the disturbances caused by one airflow in three directions are gradually analyzed from three directions.

The calculus that can circumvent the headache of high school students is at most one-yuan partial guide. This has three directions, so it needs three yuan.

Do you think this is done? After normal fluids disturb each other, after forming a primary vortex, the vortex airflow has vortex. If you want to calculate more precisely, you must also perform secondary partial conduction.

Of course, there are vortexes after the vortex. In order to be more refined, a third partial conduction must be performed on each sub-direction.

This is the most basic fluid formula. If you are a different major, you need to add other elements to these, such as analyzing the Earth's atmosphere. The deflection force on such a large scale must be considered. The deflection force is related to latitude. Well, the already complicated formula that is troublesome has become more complicated.

Well, some people may say that they do not study weather, build aircraft, design ships, and do not contact these industries, so these disciplines are not needed at all. So let’s talk about the sentiment of Feitian. Everyone wants to enjoy the flying thing, just like humans enjoy the convenient information provided by mobile phones.

Rocket backpacks that can allow single-person flights have appeared in the second half of the 21st century. Literature often said that they should make wings without giving people and yearn for the sky. After the emergence of the technology of free floating, this technology must never be mastered by people with lack of knowledge, just like people without a driver's license will never be allowed to drive.

If you don’t have a certain knowledge, just wait for the spiral to the sky, Brown will fly, and plant the onion back into the ground. If you want to float in the sky, then learning some knowledge of fluid mechanics is a must. Otherwise, if a single-person aircraft fails in the sky, then if you do the wrong action, you will be waiting to die.

Fluid mechanics is a widely used physics discipline, but it is opened by mathematics. It is difficult for many people to enter. The same is true for other disciplines.

There are many subjects that require mathematics to control. Luan has not considered work yet. Work is the bond between Luan and the world society. At present, this bond is very dim. Luan needs mathematics because he really needs it. His super energy system requires a lot of mathematical modeling.

Mathematical modeling is not just a computer. Lu An gives the computer all the repetitive tiring work, while Lu An wants to design algorithms.

With his eyes on the flat light and black frame, Lu An took a breath: "High Mathematics, I'm here to challenge you."
Chapter completed!