"Sister, he slept so soundly......" It was the first time I saw Lin Sen sleep so thoroughly, and he was completely lazy.

Lemidia lifted her glasses, looked up, and smiled, "Maybe I'm too tired." ”

"Oh~~" Wu Huan curiously approached Lin Sen's face, and when she saw that the sad face in his eyebrows was always lingering, she raised her little hand and slowly rubbed them away.

And then......

Lin Sen woke up.

"What are you doing?" Lin Sen looked at his chicken nest head and the cold little hand.

"Wow! Why did you wake up?! Wu Huan hurriedly withdrew his hand, his face flushed as if he had done something wrong.

Lin Sen's brain seemed to be disconnected from a circuit, he let out a long breath, then sat up straight and asked, "Why did I fall asleep?" ”

"Uh......" Wu Huan didn't know how to answer, in fact, they couldn't figure out the current situation.

Only the beautiful sister is like a mirror in her heart, she is holding a thick diary, this is not Han Wensheng's, nor Amy's, it is exclusive to her.

"Probably you chose this node to come back, but as soon as you come back, you can't sleep." The beautiful sister came over and sat down in front of the floor-to-ceiling window.

The carpet is soft and smells of sunlight.

Wu Huan was holding a comb to help Lin Sen straighten his hair, and what about Lin Sen......

He subconsciously raised his hand to look at his fingertips, where countless lines converged from all directions and went in all directions.

Lemidia noticed this, so she hurriedly asked, "Sen, do you have something unspeakable that you have been hiding from us?" ”

The affectionate tone brought Lin Sen back to his senses, and he looked at Lemidia, and then calibrated the time.

November 20, 146 A.D.

Seeing this data feedback, Lin Sen hurriedly got up and came to the window, the Eruber outside the room was much more depressed than before, and the empty streets could be seen everywhere.

The most striking changes are also striking in the distance......

There, the mast of the sublime axis of life, which once served as a refuge, has fallen, and the wall of sighs is mottled and scarred.

"White, have you calibrated the current data?" Lin Sen asked in his heart.

"The calibration has been completed, the contractor, the current global population has been sharply reduced from 108 million in 103 years to about 2.37 billion, and there are no ordinary residents in Alub at present, only used as a cargo transfer station, and currently has 310029 garrison, and the commander is Major General Zhang Yu."

After a group of unbelievable data was summarized, Lin Sen's mind was still haunted by a fog.

Because he forgot the purpose for which he chose this node to appear.

"I can't reveal much to you under Regulation VII, Contractor."

Lin Sen understood, he understood, this was so that he wouldn't be caught in time travel.

"What's wrong? Staring outside for a long time? Wu Huan leaned over, and she felt that this Lin Sen seemed a little unfamiliar.

Lin Sen shook his head, he knew he wouldn't choose to be in this room for no reason, unless he found the problem on a previous trip.

So he immediately turned around and began to walk around the room as if he had lost his soul, looking through and looking for it.

Seeing Lin Sen like this, Wu Huan asked Lemidia a little worriedly: "Sister, what's wrong with him?" ”

Lemidia was also strange, but the wise emperor had already prepared.

She suddenly raised her hand and asked Lin Sen, "Hey, Ah Sen, are you looking for this?" ”

Lin Sen, who was lying under the table with a sparrow on his head and flipping through his diary, stood up suddenly after hearing this, but the person was fine, and the bird almost suffered.

"Stupid dog, are you trying to murder?"

Lin Sen clamped the bird's beak and walked over with it.

Done in front of the sofa, Wu Huan comforted Xiao Pozui, and Lin Sen was slowly flipping through Lemidia's diary.

The beautiful sister tasted the coffee, and she was not in a hurry at all.

The content of the diary is not very large, and there are quite a few repetitions.

One of the most frequently recorded records is the one that has never been forgotten by Lin Sen......

That is, the gift that Han Wensheng left to Lin Sen before he disappeared.

"Don't think it's a line, take out the dots and put them on a two-dimensional plane, like a blank piece of paper, and fold it and you'll find more, but what if you take it a step further and put them in a three-dimensional cube?"

Same concept, different expressions.

Lin Sen has thought about this sentence many times...... But what does it really mean?

"How did you write this down?" Lin Sen was a little curious.

Lemidia naturally leaned on Lin Sen's shoulder, and then replied angrily: "It's not because of you, every time something is abnormal, you will say this sentence at the moment of recovery, after a long time, I feel wrong, so I will write it down." ”

Lin Sen was a little unnatural, he looked up at Wu Huan, but Wu Huan didn't have a jealous posture at all, and didn't even look at him.

It seems that there are still many changes to be aware of in the future.

"That'...... Do you have any ideas? Vaguely, Lin Sen felt that this was not the first time he had discussed this issue with Lemidia.

Lemidia also looked at Lin Sen with strange eyes and said: "Your memory seems to be getting worse and worse, in the past few decades, we have discussed this more than a hundred times, but every time...... How can I say it......"

Lin Sen had no impression, or he had no impression of it now.

"How?" Lin Sen was nervous, he wanted an answer, but he was afraid that he would get nothing.

Lemidia spread his hands: "Every time, when we raise the concept of these words to the fourth dimension, we stop, and our chief engineer, Miss Mannie, in order to demonstrate this concept, is almost swallowed by the singularity of her own making, and then we come up with a concept, before we really witness the world of the fifth dimension, it is futile to try to go beyond the mind to know." ”

After listening to this, the expression on Lin Sen's face changed several times.

It seems that the point of everything is still on Lin Sen himself, because he is the only one who has truly seen the fifth dimension and successfully escaped from there......

But Lin Sen couldn't remember how he had accomplished this escape.

There was even a special conspiracy theory that Lin Sen had for a while, that is, his escape was nothing more than a teasing or banishment of him by the fifth dimensional civilization, and it was they who brought Lin Sen back to the three-dimensional world that belonged to humans, rather than Lin Sen himself escaping.

Although this idea was eventually shattered because it could not be demonstrated, Lin Sen still remembered it from time to time.

"The one-dimensional concept of space-time has a serious paradox and is irreversible; We can only observe the two-dimensional space-time folding, but cannot copy it; The three-dimensional concept of space-time is as perfect as the number '3' and unassailable unsolvable, while the four-dimensional ...... The fundamental concept of space-time has been lost because of excessive symmetry, and the theory of relativity has become a joke that is both true and fallacious...... So finally......" Lin Sen gradually began to remember the results he had reached with them and their discussions together.

"In the end, we can't recognize the five-dimensional space-time, so we can't understand it, we can only shape a god-like forbidden land through imagination, and then everything becomes empty and difficult to touch." Lemidia added the last sentence.

Lin Sen raised his head and looked at Lemidia, this was indeed too difficult......

But there must be a reason to come back here, and Lin Sen doesn't believe that he will make a useless choice here.

"I'm going to talk to Mannie." Lin Sen said and got up and walked out of the room.

The Wu Huan and Lemidaya who were left behind looked at each other.

"Sister, is he Lin Sen?" This question suppressed Wu Huan for a long time.

Lemidia pondered for a while before nodding and said, "It's him, no matter what brought him these abnormalities, but I can feel that this is the real him." ”

As she said this, Lemidia wrote down the previous words again in her diary.

……

Mannie's lab is always in order, she's not as unkempt as other geniuses, and even when she's repairing the Thinking Mech, Mannie still looks neatly dressed and looks extraordinary.

"How long did it take you to get from upstairs to here?" Hearing the familiar footsteps, Mannie asked without looking up.

Lin Sen didn't pay attention, but Bai helped him give an answer.

"Three minutes and sixty-seven seconds."

"What about distance?"

"Two hundred and ninety-seven meters, not including fifty-five meters of vertical distance."

"So what is vertical distance? Why consider it separately? Mannie finally looked up, she looked at Lin Sen with a grin, and her little nose was plastered.

Lin Sen walked over, naturally raised his hand to wipe the dust off her nose, and then replied, "Because humans are used to simplifying concepts. ”

"Ding Dong!" Mannie rubbed her nose and performed a ventriloquist "Answer is correct!" ”

Lin Sen smiled slightly, and he stood in front of a pure red thinking mecha.

"The Fifth Knight of Eternal Flame, Pinocchius, she looks so beautiful." Shiro compliments this mech every time he sees it.

"Oh, somebody's in love?!" Mannie raised her eyebrows, and the core of her mind was connected to Shiro.

"Love is a special power exclusive to human beings, and with my current level of cognition, it should not have reached that level." Shiro's response was straightforward.

"Poof, I really like you a little more, white!" Mannie was amused, and then she lowered the veil, and the Fifth Knight was ushered into the common room by a massive mechanical base.

When she was done, Mannie untied her rope and showed off her long flowing hair, then found a chair and sat down in front of Lin Sen.

"Is it the same question as last time?"

Lin Sen nodded.

"Is there a new understanding?"

Mannie thought about it for a moment, then motioned for Lin Sen to sit down.

Then he asked, "First of all, how do you feel about these 3.7 billion years?" ”

Lin Sen frowned and replied frankly: "I don't feel it, it's like a dream, as long as you wake up, you will soon forget, and then you don't even remember how long you slept." ”

“bingo！ That's my new understanding! Mannie clapped her hands and smiled happily.