Physicist Albert Einstein once said that a scale has a law of scale.

Every theory has its scope of application, and any correct theory that takes a step beyond its scope of application will be transformed into a fallacy.

Of course, Einstein originally meant the chasm between quantum mechanics and relativity. In the world that quantum mechanics faces, gravitational interactions are negligibly weak, while in the vast universe faced by relativity, gravity is a great force that distorts time and space and dominates everything. Different theories are used to describe "macro" and "micro", "low" and "high".

The "high speed" here is also the "high speed" in the concept of physicists, that is, "sub-light speed".

This is a highly condensed theory condensed from human intelligence.

As for human intuitive experience, it is often more unbearable than theory.

The world "above the speed of sound" that cyberwarriors face is beyond the comprehension of human intuitive experience, and beyond the preparation of evolutionary instincts.

Xiang Shan did not have a vector thruster, so the first problem he had to face was the challenge of fluid mechanics.

"Fluid" is a concept created by humans themselves. Nature does not stipulate that something should be a fluid or a rigid body. Conversely, many objects have elements of both fluids and rigid bodies, and exhibit different properties in different situations.

One is the "time when the force takes effect". If you tap the surface of the water too hard, your hand will feel pain. If you fall from a height, the water will be no different from the concrete floor. Because the speed at which you hit is greater than the speed at which the water flows, the force that pulls on it. When your hand comes into contact with the surface of the water, it does not appear as a "fluid character", but as a "rigid body character".

The reverse is also true. Many things that humans consider to be rigid bodies have been able to exhibit fluid properties over a long period of time. Take rocks, for example. Geological movement is the flow of rocks. In the presence of the immortal observer, the mountains flowed like water.

The second is "yielding". Some substances will show the characteristics of fluids under the huge external force. If you hold a ball of plasticine and squeeze it hard, the plasticine will run through your fingers. This is because the "shear resistance" of plasticine "yields" in the face of force.

That's how the run to the mountains is.

He needs to constantly kick the ground with a huge amount of force, but this force is far beyond the shear resistance that the ground can have. No matter how hard the ground is, under this level of body method, it is as spineless as mud. At this high speed, the sensation of hitting the ground is similar to that of hitting the water.

The air in front of him was the opposite. He was so fast that the air simply did not have time to "run away". His body in front of him kept hitting the air, then leapfrogging the deformed mass of gas before the reaction force could take in. He runs in the air, and it is more difficult than a natural boxer to punch in the tide.

- Tips......

Xiang Shan kept roaring in his mind.

He remembers this technique.

The angle of the kick to the ground should not be too small, because the outer armor of one leg is not specialized and the coefficient of friction is not enough. It is rumored that only materials that allow a person to walk vertically on a wall can support a supersonic body in a vectorless jet. For Xiang Shan, it is as if a layer of lubricating oil is applied to his feet now......

The angle of kicking the ground should not be too large, and if you accidentally jump, it is better to change direction in the air than on the ground. If you leave your feet on the ground, you will become a target for your enemies.

You have to be fast, because the faster you are, the less likely you are to get injured......

Speed can't be kept at the highest speed all the time. A constant speed can be easily predicted......

Xiang Shan's right hand reached out and slapped forward at a speed that was neither fast nor slow. The layers of air just form a barrier to the "shock wave". At that moment, Xiang Shan's hand seemed to be pressed against an invisible wall, changing the course of progress out of thin air.

If he throws a punch a little faster, the shock wave resistance on the side can't catch up with his arm

Three bullets slashed through his straddle one after the other.

- See the ballistics......

- Next ...... The correction parameters should be......

- Deceleration......

A bullet crashed into the dirt in front of him. Under the vision of super-high speed, he saw the dirt roll up like a wave.

- Accelerate again!

The atomized fuel is injected into the heat engine in the chest. Liquefied alcohol, which is well mixed with the atmosphere and accelerant, burns completely instantly.

Unlike batteries with a constant maximum output. All heat engines created by human beings, including but not limited to steam engines, steam turbines, gas turbines, internal combustion engines, and jet engines, all use the power of "explosion", which is to use the structure of "piston" to contain the "explosion" of atomized fuel, and to control the original unrestrained "explosion".

Since it is not necessary to maintain life, there is no need to consider stable output, battery life, or the number of times the engine itself is used...... The efficiency of this engine is infinitely close to the theoretical extreme of the efficiency of the heat engine.

This is exactly what warriors use.

The mechanical structure is to be integrated into the crotch mechanism of the original "explosion" that is bound together. The physical structure of cyber people is obviously different from that of natural people, and there is no situation of "pulling a hair and moving the whole body", and each part of the body can exert strength independently. Warriors can choose to use all their energies in one breath, or they can choose to work together.

The speed towards the mountain suddenly skyrocketed.

So, seven bullets fell on him!

Xiangshan felt like a wild wolf running wild, like a motorcycle that was out of control. The explosion between the pistons seemed to be his heartbeat, and the kinetic energy was his blood. If there was a physical touch to describe it, it would be more like someone had stuffed a motorcycle into his heart.

That's just right...... Because his anger is really on a rampage!

Directly ahead is the wreckage of a battleship's outer armor. This is one of the few things that can be used as a "cover". Xiang Shanshan didn't slow down, and rushed straight over. The powerful speed pressed him to a plane almost perpendicular to the ground.

The prosthetic leg stomped on the wall of the wreckage, running sideways.

And five kilometers away, Glyard lost track of the mountain. The speed of the drone can't keep up with the guy's movements. There were no drones around that area. But instead of stopping shooting, he fired twenty bullets at each side of that section of armored wreckage. These bullets form a formation that will fly in the air for a few seconds before biting a possible target.

- With the help of that section of the city wall, quickly change direction? Is he speculating on my sniper point?

It's an asymmetrical battle. Glyard was confident. The long-range advantage of the gun path is also mathematically determined. He only needs to move the muzzle of the gun by a few millimeters or even a few microns, and the point of landing of the bullet will change dramatically. No matter how fast a fighting warrior runs, it is impossible for a gunner to move his gun as fast as a gunfighter. The other party can only rely on such a speed change to interfere with his prediction. And he can keep moving the muzzle of the gun in a good time, weaving a death trap with bullets.

This garbage mountain area is complex, and there is more than one area suitable for sniping points. Glyard even took this into account when arranging the drone formation, deliberately hovering a small number of drones in an inconsequential position so that the enemy could misjudge where he was.

- As long as that kid miscalculates, I'll be able to have about ten more seconds...... No, until then, it would be a failure to choose to use this vertical wall to accelerate the steering. When your hands and feet are off the ground, when you are on the surface, you don't have a chance to dodge at all

But at this moment, a silver point of light flashed in his field of vision.

In a section of the armor that resembled the remains of the city wall, it seemed to have been hit by a cannonball, and the whole thing was dumped. And in this short period of time, Xiang Shan actually ran diagonally for a while and then crossed the top of the wall, grabbed the edge of the armored wreckage with both hands, turned around with strength, and then clasped his knees with both hands, and fell to the ground with a somersault.

"What......"

Gunfire rang out again. But as soon as the bullet came out of the muzzle, Glyard knew it was missing. The bullet will pass over to the mountain's current location after a few seconds. The gunners immediately corrected the mistake and laid a net of bullets in the man's path.

Then, the wreckage landed almost simultaneously with Xiang Shan. Immediately afterward, the sand and dust rising into the sky completely blocked Glyard's vision.

But then, all the bullets missed.

- What's wrong?

The drone swarm did not capture any traces of departure. The guy seemed to be deliberately slowing down, causing the smoke and dust to not have much of a trace of being stirred. For the first time, Glyard looked a little agitated. Smoke and dust were like natural enemies to him.

He didn't know if he had hit or not, so he could only shoot bullets one by one, blocking all possible paths.

In this day and age, even sniper rifles can have a high rate of fire.

But suddenly, a dark shadow crossed the field of vision. Glyard was taken aback and immediately switched his field of view from a distant view to a wide angle.

He saw the overall flow of smoke and dust.

That guy...... It's just starting to accelerate. He stopped in that place for a few seconds, and only now did he start accelerating again!

Bullets fell in front of Xiang Shan. That's the bullet he fired a few seconds ago. That warrior, just like this, stepped on the small crater formed by the bullet all the way, and rushed like treading a wave?