The time machine she had always dreamed of, although it had not yet been completed, but since such a wonderful change had already occurred on the eve of completion, it at least showed that this instrument did have the function of changing the flow rate of time.

It's just that it may have been because she touched some time switch during the production, causing her to be teleported back to the day before.

Everything, whether it is the scene, the characters, the course of events, all seem to have been rewound, and the only thing that has not changed is her still intact memory. It is precisely because of this memory that she can observe the receding of time.

Xue Feifei hurriedly took two deep breaths to calm herself down. Reaching open the drawer next to him, he took out the box containing the communicator, and strode out.

Kong Zhe didn't wait too long, and soon Xue Feifei had already appeared at the door of the building and walked towards him.

"Here, what you want!"

Xue Feifei saw her and directly stuffed the box to Kong Zhe, and then stood in place, waiting for him to speak, because she knew that Kong Zhe was not only here for this.

"Oh, thank you......"

Kong Zhe was stunned, subconsciously took the box, opened it and looked at it, it was indeed what he needed. He is still a little puzzled now, it seems that he didn't say what he needs, right, and the other party actually took it down for him directly?

Kong Zhe couldn't help but raise his head and glanced at Xue Feifei.

"What for?"

"Nothing...... I said, how long have you not ......"

"How long has it been since you slept, haven't you? Don't worry, I slept well last night, and the dark circles you see are illusions, illusions! ”

Xue Feifei directly snatched his words and said.

"Huh?"

Kong Zhe couldn't help blinking, what's wrong with her?

For a moment, Kong Zhe was a little skeptical that she was the same as the old man Chen Qiao, who could directly read what people were thinking, otherwise how could she say what she wanted to say so simply?

Seeing that she had bluffed Kong Zhe for a moment, Xue Feifei was very happy. Although she had fantasized about what it would be like to go back in time many times before, it was not as interesting as the real experience.

Xue Feifei didn't rush to leave, but stood in place, waiting for Kong Zhe to speak first, she knew that he would definitely ask for a card from her.

"By the way, do you still use those cards?"

Sure enough, Kong Zhe quickly said that he came here for another purpose.

"I'm going to use it again!"

This time, Xue Feifei said without hesitation.

"You don't have to, do you? But I'm in a hurry, my research can't do without those cards! So, leave me a few more days! Is that okay? ”

Xue Feifei said her hope before Kong Zhe, and then looked at him expectantly.

"Oh...... Oh, of course you can, and I'm not in a hurry. ”

Sure enough, Kong Zhe, like yesterday, chose to give her the card to use first.

"So, if it's okay, I'll go back first!"

With that, Xue Feifei turned around and was about to leave.

"Oh......"

Kong Zhe nodded subconsciously, but he looked at Xue Feifei's back, and after hesitating for a moment, he still asked out loud: "Wait a minute, that, can I ask you, what kind of research are you doing now?" ”

Xue Feifei's footsteps were stunned for a moment, and after taking a deep breath, she turned her head and showed a smile to Kong Zhe: "It's nothing special, it's just an ordinary study......

"Oh, okay, I see, you can get busy......"

Kong Zhe nodded and watched Xue Feifei leave, but when she finally turned her head, Kong Zhe was suddenly stunned for a moment, and subconsciously looked at the top of her head, but this time he didn't see anything, Xue Feifei was as usual.

This made Kong Zhe frown slightly, and just now when he turned her head, he saw a faint silver thread flashing on her head. It's just that when he looked at it again, it was gone.

"Delusional...... Probably ......"

In the end, Kong Zhe could only shake his head and ignore it, which was not something worth noting.

……

It wasn't until she returned to her room and closed the door that Xue Feifei finally let out a long breath, and then couldn't help jumping twice in place, venting her excitement.

"I really...... Go back in time......"

It wasn't until a moment later that Xue Feifei finally calmed down. Back at her workbench again, she grabbed her tools and notebook to record her data, and started her day.

Regardless of whether this rebirth is a flash in the pan or not, it is likely that it will be difficult for her to encounter it again in the future, but as long as she has this experience, at least it will make her full of confidence in her own research and the instrument in front of her, which will inevitably be an instrument that can change time. Anyway, it must be right to continue researching like this.

After suppressing the excitement, Xue Feifei immediately started working, this time, because she already had a production experience, so her movements were naturally a little faster, and more importantly, this time she had a card by her side, and all the data could be directly observed from it, without having to bother with her own calculations, and there was no need to worry about calculation errors, the whole production process could be said to be much easier than yesterday.

I completed half of it in one day under such difficult conditions yesterday, so I should be able to complete it all at once with so many favorable conditions today...... Should......

Xue Feifei thought so, but it wasn't until the end of the day that she realized that she was thinking a little too much.

What made her miscalculate was that the more the instrument seemed to do it, the more difficult it became. At the end of the day, she had only completed about two-thirds of the way through her efforts.

Xue Feifei looked at the larger and larger instrument in front of her with some pity, but soon, she had no time to regret this. glanced at a stopwatch placed on the side, and on the stopwatch, the time was already pointed at 11:59.

The day is coming to an end.

Xue Feifei hurriedly walked back to the table behind her, picked up the notebook that had been recorded for the day in one hand, and turned to the latest page of today's record. And in the other hand, he still held the stopwatch tightly.

Her eyes wandered back and forth between the stopwatch, the notebook, and the instruments in front of her.

As the distance from twelve o'clock was getting closer and closer, when there were only ten seconds left, Xue Feifei took a deep breath and held her breath, and suddenly the ticking of the stopwatch became clearer in her ears.

Xue Feifei's heart seemed to be beating with the stopwatch, and finally, time came to the last second.

"Smack!"

As the second hand crosses the midline, a new day is announced.

"This, this is ......"

And in the next second, Xue Feifei's eyes widened. I looked at the scene in front of me in disbelief.

At this time, the notebook in her hand had all disappeared from the original dense handwriting. It was a blank slate again. At the same time, the instrument that was in front of her instantly shrunk to the same as it had been a day ago. Today, all the parts she made are gone.

There was no trace, no sound, just out of thin air, in the blink of an eye, disappeared in front of her!

Xue Feifei once again returned to yesterday.

After being stunned in place for two minutes, Xue Feifei came back to her senses and couldn't help but swallow.

Although she knew that this possibility existed, she still couldn't calm down for a long time when she saw this anti-science phenomenon with her own eyes.

She was now glad that she had been able to see a time reversal in her limited life, but it was a pity that she seemed to blink at the exact moment of zero o'clock. As a result, she was unable to see the whole process of the handwriting changes of the instrument and notebook.

And this time seems to be a little different from what I imagined, I thought there would be more obvious, more thrilling things to follow, such as lightning and thunder, vicissitudes of life and the like. It turned out to be so simple that it didn't make any waves and it ended. If it weren't for the two pieces of evidence in front of her, she wouldn't even realize that she had gone back in time.

Half an hour later, Xue Feifei completely calmed down, she didn't waste any more time, but immediately plunged into a new day's work.

She thought that everything had been done almost perfectly yesterday, but since the time teleportation was still triggered, it meant that something was wrong that she hadn't noticed.

And now, what she has to do is to find out this problem and then eliminate it, otherwise a time machine that will malfunction cannot be called a real time machine, what Xue Feifei wants is an instrument that can really be controlled by her own mind to travel through time.

With the experience of the previous two times, Xue Feifei naturally did it more handy this time. And because it started in the early hours of the morning, her working hours were one-third longer than the previous two days, so Xue Feifei felt that she would be able to complete all her homework in one day this time.

If she can follow the plan she has set and complete it step by step with maximum efficiency, then she will still have enough time to complete the production, even if it becomes more difficult later in the process. However, she still ignored one point, that is, no matter how strong she is, she is not superhuman, and it is impossible for her spirit to concentrate all the time, especially after dozens of hours of super-long homework in a row, and in the end, her attention has begun to be seriously distracted. There were even several major mistakes in quick succession.

Of course, such efficiency could not support her to complete the entire instrument, so by the end of the day, Xue Feifei could only give up helplessly.

It was another zero o'clock, like a copy of yesterday, her instruments, the statistics she made, all the marks about yesterday, all receded like a tide, and the whole room changed in an instant to the way it was a day ago.

This feeling that all your efforts have been wasted in an instant can be frustrating.

Even Xue Feifei, who has already experienced it twice, can't stand it.

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