Wang Ke was interested: "You can explain it in detail, okay?" ”

"Of course you can, to put it simply, it's what you humans call the overwhelming power of mountains and seas, the power of earth cracking and landslides, the power of invincibility, and so on."

Dr. Yuan likes to give Wang Ke some knowledge very much, and said with a smile: "Magnetic potential energy refers to the huge energy generated by the variation of the magnetic field, wind potential energy and heat potential energy, which is the same reason, wind and geothermal heat from nature, and high-pressure potential energy refers to the huge pressure in the depths of the seabed, and it is also a kind of potential energy, which is huge!" ”

Wang Ke was stunned, he didn't expect that these were the energy of a highly developed civilization!

"You earth humans, you can't control these energies yet, I can only describe it in words you can understand, we use poles, squares and ancients to collect these energies."

Dr. Yuan continued: "Fang and Gu, if you can decompose and compress these kinds of energy, this kind of thing, similar to your human capacitors, collects and stores this energy, and when it is applied to the power of the aircraft, it has an earth-shattering potential energy! ”

Wang Ke roughly understands that humans can't control it yet!

Human beings do not use geothermal energy, wind energy and magnetic energy, but they use it very limitedly.

The utilization of thermal energy is nothing more than power generation and heating, the utilization of wind energy is limited to water lifting and power generation, and magnetic energy is only limited to medical equipment, water heaters, etc.

"Different levels of civilization have different uses of natural energy in the universe."

Dr. Yuan also said: "Three years ago, the domestic Tianyan and Mold countries successively observed that huge flying machines appeared around the sun, that is, they were collecting energy. ”

"Huh? I know that! ”

Wang Ke was shocked again: "But that flying machine, which is said to be extremely huge, almost bigger than our earth, thinks that this is impossible!" ”

"It's not impossible, but it's true, we have also observed it, but the angle of observation and the calculation method are different, although it is not that big, it is also very amazing, it should be the aircraft used by advanced civilizations to carry out the great interstellar migration."

Dr. Yuan said very seriously: "The level of their potential energy is much higher than that of our Blue Star, but the level of cosmic civilization divided by the earthlings is nonsense, and in fact it is not like that at all!" ”

Wang Ke still wanted to ask, but Hongyu next to him pointed to a monitor and said, "Dr. Yuan, they lowered the altitude and stayed in the troposphere!" ”

"Descend to the appropriate safe height!"

Dr. Yuan immediately said: "Continue to monitor, and you must not relax." ”

Hongyu agreed, manipulated the aircraft, and instantly dropped in altitude.

Wang Ke and An Ran saw it from the monitor, they couldn't feel it at all, they just wanted to ask some questions they didn't understand, they forgot the purpose of coming, and hurriedly came over and observed in front of a monitor.

The sky in the monitor is a little dark, and I woke up late, which should be afternoon, and it will be dark.

It can be clearly seen that a saucer-shaped aircraft of three or five meters in size is suspended in the air, an island below, surrounded by a dark blue patch on the right side, which should be the sea surface, and the land can also be seen on the left side, and the specific situation is not clear at all.

Wang Ke guessed that it should be over the cherry blossom country, and another land that cannot be seen clearly is the birthplace of human civilization and his own motherland.

After waiting so long, I watched the aircraft land again.

And the aircraft he was riding on seemed to be moving, and the scene on the screen was constantly zooming in, and the situation was still the same as scrolling the mouse on the computer and viewing the high-definition map, gradually and little by little.

At night, the cherry blossom country of Beijing City, the lights are on, from the initial bright spot, to the scenery gradually clear, the aircraft is suspended in the sky of Beijing City a few hundred meters away, it is dark, and there is no light in sight.

If you look down at this point, it should be difficult to spot it.

Just as Wang Ke was watching intently, the flying saucer suddenly descended and landed in a grove of trees in the backyard of a small two-story building.

The saucer-shaped aircraft is almost similar to the triangular aircraft he was riding, and a step slowly appeared behind it, and by the light from the two floors in front, it was clearly seen that two small things came out of it.

This is the first time Wang Ke has seen the little gray man with his own eyes, and he can't help but be amazed!

Due to the observation angle, you can't see their faces, you can only see the top of their heads and figures, it seems to be gray, it may be other dark colors, you can't see whether you are wearing clothes or not, your head seems to be large, there is no hair, you are slightly leaning forward, and you don't know if it is a hunchback.

The clearest thing to see was that he was thinner, his arms were very long, and he didn't walk very fast, so he walked to the second floor, and one of them was holding a small box-like thing in his hand.

The two soon reached the back window, and one of them raised his hand and shot a pale blue light into it, still swaying back and forth.

"Turn on the resonant display function!" Dr. Yuan said suddenly.

Wang Ke didn't know what the resonant display was, but the scenery on the monitor had changed, there was no color, it became black and white, but the windows and walls of the house and other things seemed to have become very faint shadows, although it was a little trance, and he was able to see the situation inside the second floor clearly.

This is supposed to be a small residential building in Sakura Kunikyo City, and in the hall, in front of a long table, there are five people sitting around, an elderly couple, a young couple, and a little girl about ten years old, eating dinner.

The family seemed to notice a light coming in from outside, and they all looked back out the window.

The young couple stood up and walked to the edge of the window, as if they were saying something.

But this only lasted for a moment, and before the two could reach the window, they fell to the ground.

Wang Ke saw very clearly, he didn't suddenly fall straight up, it seemed that his legs were weak, and he fell to the ground like that.

Of the three people sitting in front of the table, two were lying on the table, and the little girl was falling backwards.

"They killed!"

An Ran exclaimed, "Dr. Yuan, have you seen it?" Use that pale blue light to kill people, and kill five in an instant, what kind of weapon is that? ”

"It's not like murder!"

Dr. Yuan shook his head and said, "Moreover, that light is not a weapon of destruction, let alone a link in their comprehensive population reduction plan, maybe there is something else, let's wait!" ”

Wang Ke also felt that it was not murder, the light was not very dazzling, their family saw it, and they were not burned, or penetrated, what were they doing?

The two little gray men looked at each other when they saw that they were all falling, and one of them, climbing up the ledge that was not very high, climbed into the room, and took the small box in the hand of the man outside.

The little gray man outside jumped in after him.