"Time and space are real, existential, perceptible, but untouchable things for us." The instructor breaks the chalk and then draws a line on the blackboard and marks three dots.

"Usually, our conception of time is like this line, and the three dots I marked, which are divided into past, present, and future."

The friction between the chalk and the blackboard left six quite powerful Chinese characters.

"The past, for example, before these six words appeared, can be regarded as the past, the present, every word I say now is the present, but it is also constantly becoming the past, and the future is ...... The future is vague and not specific enough, just as none of us know what strange things we will eat in the cafeteria at noon today! ”

The students in the audience laughed.

"But there's a question worth pondering." The lecturer picked up the blackboard eraser and erased the six words, and then said, "Suppose this blackboard eraser is strong enough to restore the blackboard to a state where no words have been written, then at this time, does this line belong to the past, the present, or the future?" ”

The students were asked.

The question is really ...... It's a bit complicated......

The lecturer smiled with satisfaction after watching everyone fall into deep thought, and he said, "Are you all dizzy?" Don't have an answer? ”

Glancing at the crowd from the podium, the students whispered, but it was clear that ...... No one can give an answer.

But just as the lecturer was about to continue, a boy raised his hand.

The lecturer was a little surprised, and he motioned for the boy to get up: "Ziyao! ”

Lu Ziyao stood up and said, "Teacher, if time can really be regarded as a line, then all the events that occur in time should be integrated into the factor of time, so ...... Even if such a chalkboard eraser exists, by the time you have the idea of erasing the text, time has completed the triple concept of past, present, and future, that is...... No matter how powerful the chalkboard eraser is, there is no denying that it is a thing of the past, and what you erase now and leave behind is still time-controlled, in reality, and in the present, which will never change from moment to moment. ”

This sounds more complicated than what the lecturer just said......

At least......

At least Nanying Jane was stunned.

She made her way through the door, thinking she was going to enter a strange world where she would encounter many enemies she had never seen before.

But who would have thought.

When the light in front of her eyes stopped dazzling, what she saw was ...... It turned out to be a school built under a dome.

There aren't many students here, and there's only one classroom.

One by one, the students sat upright, listening carefully to the teachings of their teachers......

But what is taught here is completely different from the classroom that Nanying Jane cognizes...... They don't study words...... Nor is it basic math...... It's what she hates the most...... Time...... Space......

Is this what they asked me to look for? Nanying Jane looked at these children and couldn't help but be confused.

After Hu Ziyao's speech, the classroom became lively.

Everyone seems to understand all of a sudden...... The lecturer was a little surprised, but nodded with great satisfaction.

"Very good, Zi Yao's logical view is very thorough...... But ......"

With a "but".

Lu Ziyao's smile disappeared, and the students in the audience were also stunned.

The lecturer turned around and wiped the blackboard clean, and then said, "But what I want to tell you is that in fact, both in the past and in the present...... Or the future, all these concepts are not concrete, that is...... Although our usual understanding of time is specific to every reality, it has never been completely complete, and it has been determined, just like ...... Our human language is the same. ”

Nanying Jane has a poker face, and she feels that her IQ is being pressed to the ground and rubbed...... Is this talking about human words?

She didn't understand it at all, anyway.

The students fell silent.

The lecturer turned around and wrote a new word on the blackboard.

Language.

"Now who can tell me what is so special about language?"

Some of the students in the audience fell into thought, some began to discuss in whispers, and some seemed to think of something, and they were eager to try...... But soon the smile on his face disappeared again, as if he suddenly realized that his answer was not accurate enough......

Anyway, after a long time, no one answered.

Nanying Jane just sat there bored, she looked out the window and thought, 'Where is this?' Earth? Or Gaia...... What am I going to do next......

There is no answer, Nanying Jane has already tried to get out of here, but every time she goes around and goes back to where she is.

It seems that Lao Wang is not deceiving......

"Teacher!" After a long time, someone raised their hand.

"Chu Yan, you come."

Guan Chuyan stood up.

Just as Guan Chuyan got up, Nan Yingjian's heartbeat suddenly accelerated...... It's not because of how beautiful the kid is...... How amazing...... Rather, something certain in her memory was awakened.

Zi Yao...... Chu Yan...... Aren't these two the children that Lao Wang mentioned before?

Is that them?

That...... Am I just going to have to take them away now?

Thinking of this, Nanying Jian walked over without waiting for Guan Chuyan to speak, intending to leave with her.

However, he found himself a ghost-like existence, and his body could pass through everything, so he couldn't touch anything in front of him.

Nanying Jian was stunned for a moment, and then Guan Chuyan said, "I think...... The most special thing about language is that it can describe things that don't exist in the first place. ”

The lecturer was slightly surprised, his eyes flashing with surprise, and he looked at the girl in front of him.

This girl who was the last to join the class.

"For example?"

"Hmm...... Like, we say...... There's a table here. Guan Chuyan patted the table in front of him, and then continued: "This is concrete, something that exists in front of us, and I use words to convey a concrete, realistic existence!" But here's the problem...... Even if I don't need to say it, just point to this table and people will understand it when they see it. ”

"Well, go ahead." The lecturer came to the stage, and he stood in front of Guan Chuyan.

Guan Chuyan said: "But if there is no table here, will I not be able to convey the specific concept?" Let's think about it, just like the cafeteria meal mentioned by the teacher just now, there is no meal in front of everyone, the time is 10 o'clock in the morning, and the chefs should still be processing the ingredients, but ...... Through language I can make people remember what those meals looked like, and even imagine what they ate until noon, and that's what I want to say...... What is most special about the language...... It can describe what doesn't exist, and more broadly, like agnosticism, without enough evidence to prove it, but not to be completely denied...... Our imagination gives language this special ability to describe, tell, and convey an object or concept that does not exist in reality! It's like...... Time...... Space...... These words are our understanding and description of the architecture of reality...... When we hear time, we associate many things, many things that exist in reality, and many things that no longer exist in reality...... We hear the space ...... You will realize where you are in the space...... I can clearly feel the front and back, left and right...... You will begin to distinguish between east and west, north and south...... It will be specific to whether you are rising or falling in space...... Relative Rest...... Or a sustainable movement......"

Guan Chuyan finished speaking, and there was silence in the classroom.

Nanying Jane was also stunned...... The girl looked like she was fifteen or sixteen years old...... How do you speak...... So......

Awesome ...... Nanying Jane felt that she was really short of words...... I can't find the right words to express my feelings at the moment.

Others in the classroom express their feelings in a more direct way.

"Smack...... Syllable...... ......The lecturer took the lead in applauding, and soon there was applause in the classroom.

Guan Chuyan's pretty face turned pink and looked a little shy.

Although Nanying Jian didn't quite understand what this girl was talking about...... But she also seems to understand the peculiarity of language, or rather...... She realized the greatness of language, or rather...... The greatness of humanity.

"Warning! Ultra-high spectral energy waveform reaction detected! ”

The alarm sounded on the frontline positions.

The adjutant who had just come back from the rescue of the Hurricane instantly sobered up, and when he opened the data, his face instantly became extremely ugly......

"Everyone! Enter the first-level battle state! Get ready for battle! ”

The order is given.

The soldiers in all positions began to get busy.

The King Crab heavy tank was the first to enter operation.

The alarm sounded in the Sovereign at an altitude of 30,000 meters, the hull of the ship began to "split", and the main guns moved to a predetermined position.

……

"Everyone, hold !!" The Defender-class mech battle formation stood by in Position 1, and the captain spat out his cigarette butt before shouting to the crowd.

At 4:15 a.m. on February 22, 150 A.D., Xenos began to attack the human position in a big way.

Less than fifteen minutes after the alarm was sounded, the ground began to shake significantly.

This is not an earthquake, nor is it the result of an overlay bombing.

Rather, it was a surging array of nearly a million xenomorphs......

The air formation has entered the predetermined combat position, and No. 077 is a member of the bombing group in the formation, and he is flying the "Triumph and Cui" III bomber, which is the main bomber type in the current Glorious Republic ** Formation.

The current altitude is fifteen hundred meters.

Visibility was good, and after the 077 specification operation was completed, he began to inject himself with a booster, which helped him to stay in perfect condition for a longer period of time in the rest of the fight.

However, when 077 saw the xenomorph army cross the valley and obscure the white snowfields in the distance, his heart rate increased unusually high.

……

The adjutant at the forefront was anxious at this time, the number of enemies was too large, and no one to deal with that nightmare-level alienation matrix was the most important thing!

However, it was useless to rush in a hurry, and when the enemy entered the bombing range, the adjutant did not hesitate to give the order to attack.

A series of roars rang out, and clusters of flames pierced the night sky...... Kick off the battle......