There is no guarantee for the lottery? So what?

“Before a hard-shelled crab dies, it will throw its pincers with all its might. You must be careful at this time, pay attention to its movements, and don't get hit.”

Hearing this, Miao Kui whispered to Qi Jing:

“The reason you were covered in blood that time was because you didn't follow the teacher's method to kill them, right?”

Qi Jing also said softly:

“I didn't know at the time. Who would have thought that crabs have weaknesses? And I was almost smashed to death by the hard-shelled crab's dying pincer throw.”

“So you just went at them with a knife? You're really not afraid.” Miao Kui was shocked by Qi Jing's boldness.

“Yeah, just chop them with a knife, cut them in two, it's very easy to kill.

For me, hitting the hard-shelled crab's weak point is much more difficult than cutting it in half, and there is not much danger, as long as I run fast enough.”

“I admire you, I admire you.”

After Kong Shu finished talking about the various habits and countermeasures of the hard-shelled crab, he talked about several other creatures and some surrounding community information.

When the class was about to end, he turned off the PPT and said to the students:

“Today's class will end here, and the rest will be discussed later.

There are still a few minutes left. If you have any questions you don't understand, you can ask me. Does anyone have any questions?”

Ye Bufan, the question master, asked:

“Teacher, the gravity in different places in the alien world is different. How do you determine that they are on the same planet?”

Kong Shu thought for a while and said:

“The reason is very simple, because places where you can see the sky can see seventeen satellites at night, which can also be called seventeen moons.

They orbit the alien planet like our moon orbits the earth, circling it every day.

However, not all of them are as bright as the moon. Only three satellites are significantly brighter than the others, but the brightest satellite is about the same brightness as the moon.

Moreover, it is impossible to see all seventeen satellites at the same time at night, because some are on the other side of the alien planet, so only when there are two other-dimensional gates, no one will notice that they are on the same planet.

This led to the spread of the doomsday theory only when the Jia and Yi other-dimensional gates appeared.

In fact, there are still people who believe in the doomsday theory, but what if the doomsday comes in the future? Living in the present is the most important thing.”

As expected of a teacher, he can talk about life attitudes while popularizing science.

“Does anyone else want to ask questions?”

Bu Pinglu raised his hand and asked:

“Teacher, have we ever tried launching satellites in the alien world?”

Kong Shu listened to this question and said:

“Yes, quite a few.

When the Jia other-dimensional gate first appeared, we launched a satellite inside, but it inexplicably fell from mid-air. At that time, we thought it was a technical problem.

After all, the gravity is different, and the required parameters are also different, so the scientists calculated and obtained new data, a new escape velocity, and launched a new satellite.

（Note: Escape velocity—the velocity required to escape a planet）

But it still failed. The rocket ran out of fuel and could only rise to a certain height, and could not leave the planet.

Later, four more satellites were launched in succession, all of which ended in failure. Only then did we realize that there was a problem with this sky.

However, due to the technical problems at the time and the lack of ability users who could go to the sky, it was impossible to draw a conclusion.

It was not until the subsequent other-dimensional gates appeared one after another and were confirmed to be the same planet that research in this area began.

By launching rockets behind each other-dimensional gate, we speculated that as long as we rise to a certain height, the gravity will increase dramatically, which is also the reason why satellites cannot be launched.

Four years ago, the level 5 ability user [Rogue] flew into the sky and verified this conjecture. In the extremely high sky, there seemed to be a round shell that divided the gravity of the outside world and the inside into two halves. As long as you break through this shell, the gravity will increase rapidly.

We named this shell the Gravity Interception Membrane, an invisible membrane that intercepts gravity into two halves.

If any of you can fly to that height in the future, don't panic, this is a normal phenomenon.”

This is not normal, okay.

The students complained slightly in their hearts.

Also, in so many years, only the level 5 ability user “free” [Rogue] has flown up there. How could we possibly fly to that height?

“Teacher, how many suns are there in the sky of the alien world?”

Kong Shu said with a smile:

“It's also one, rising in the east and setting in the west, just like here, it's also twenty-four hours a day, amazing.

The sun is one of the few similarities between us and the alien world.

Any other questions?”

“Teacher, teacher, are there any cute alien creatures?” a girl asked.

Kong Shu replied:

“Yes, but bringing living alien creatures back to Earth is strictly prohibited, so don't have this idea in the academy.

In the future, you can buy a few to keep there in the alien world, but you must buy the specified types of pets. Absolutely do not catch or buy other cute things. Kill them directly if you encounter them.

Don't be soft-hearted, because they may be extremely dangerous.”

After that, Kong Shu answered a few more questions.

The class bell rang.

“Finally, what I want to say is that high school tells you to protect biodiversity, but that is for the environment that we can control.

The alien world is not something we can easily manipulate. Don't have compassion for the creatures that live there, unless you are strong enough.”

Before, many people were reluctant to kill certain alien creatures because they looked cute, and were easily killed by them in return.

Stupid!

Kong Shu hates judging people and things by appearance the most.

He can understand if the students are stupid.

But some professors say to protect biodiversity and not let them kill all the alien races. Isn't this sending their warriors to their deaths!

He has to emphasize this to the freshmen every semester, for fear that they will go to their deaths.

“I wish you all a bright future and smooth sailing! Class dismissed.”

Kong Shu ended the class with a blessing.

After Qi Jing greeted Tan Zuoyin, he went to eat with Yan Cheng and the others.

On the school bus, Song Jiang asked Qi Jing:

“By the way, are there really seventeen moons in the alien world? Qi Jing, have you seen them?”

Qi Jing said: “I haven't seen them. When I first went to the alien world, it was daytime. The second time I went there, I didn't go outside, just wandered between the Yuandao base and Bixiao City.

No!

It seems like I went out yesterday. It seemed to be night at that time, but the Yuandao Bund was very bright, and I didn't observe the sky carefully.”

It seems like it was yesterday. It's all because the hard-shelled crabs were almost killed before they went, Qi Jing didn't enjoy killing them, so he forgot.

I must look at the sky next time I go.

Yan Cheng asked: “Qi Jing, what is your strength now? Why do the creatures the teacher mentioned seem to be no match for you?”