"What is this" Team Li flashed a flashlight and took out a square crystal when he saw Lin.

"Rubik's Cube, pick it up, I'll put it together first......"

"......" Team Li turned his head to look at the groove, and then looked back at the Rubik's Cube in Lin Shi's hand, his eyes deepened, this is too coincidental......

Lin Shi concentrated on spelling the Rubik's Cube, but he didn't think much about it.

Two minutes later, Lin Shi quickly figured out the rules of the Rubik's Cube and restored it. After carefully observing the interface in the groove, Lin Shi thought about it and tried to find out if the middle piece on each side of the Rubik's Cube could be removed. Sure enough, just after trying both sides, Lin Shi found the corresponding interface, placed it in a good position, and pressed it into the groove.

？？？ Why didn't there be any reaction! Lin Shi looked dazed, could it be that this Rubik's Cube is not the 'object' of this groove?

Seeing this, Team Li stepped forward and held down the Rubik's Cube, rotating it left and right a few times, as if hearing the sound of gears spinning.

There's a play! It seems that this Rubik's Cube is indeed the key to this secret passage, but now we have to find a way to open it.

After Team Li failed several attempts, Lin Shi was unwilling to step forward and do it himself, but he didn't believe that he couldn't open this door!

A minute passed,

Two minutes passed,

Three minutes passed,

…………

Lin Shi gave up. Who can count this if it turns hundreds of times! And if the order of the left and right twists is not the same, then the result is even more difficult to count.

No, it definitely won't be that complicated, and this Rubik's Cube has been lost but I haven't seen how many people in this laboratory are in a hurry to find it, obviously there are two possibilities - either this place is not important, and the Rubik's Cube is lost, or there are not many people here often, maybe they don't notice the Rubik's Cube when it is lost!

But seeing that this Rubik's Cube is so exquisitely designed, and so hidden, if they hadn't happened to encounter this secret passage, who would have thought that this Rubik's Cube would actually be the key to open a secret passage!

So it is very likely that this is the second guess, this secret passage has not been visited for a long time, or that this secret passage has been in a semi-abandoned state. If it weren't for the fact that there were other passages, then there might be no value in investigating under this secret passage......

Lin Shi reasoned for a long time, and when he came to such a result, he was immediately congested...... Sure enough, I don't have such a good protagonist life, and I can pick up rare treasures casually~~

For the sake of your good looks, I can barely put you back in my backpack. Lin Shi was frustrated and wanted to take out the Rubik's Cube. But because the groove was too narrow, she had to carefully pull the Rubik's Cube out little by little with her fingers. It may be that he pressed too hard when he put it in, and it was very difficult for Lin Shi to take it out, and he finally pulled out a little bit.

"This is a bit difficult to take out~" Lin Shi was a little worried, but he didn't want to just throw the Rubik's Cube here.

"......" Team Li looked at his fingers, as if he couldn't even stuff them, he was powerless......

"Wait a minute, do you see if this Rubik's Cube is flashing?" Team Li turned off Lin Shi and the flashlight in his hand, and pointed to the groove and said to Lin Shi.

He seemed to see a flash of red light inside.

"Huh-" Lin Shi waited for twenty seconds, and sure enough, the red light flickered again and then disappeared. What's going on?

Lin Shi observed curiously for a while, and she found that this red light was very regular, flashing every thirty seconds, a bit like an indicator light, like a charging machine~~

Machine? Charge?!!! That's right, isn't this interface just a plug! She said that this Rubik's Cube is not that simple! Lin Shi was a little excited and moved, and she was very much looking forward to what kind of surprises this little Rubik's Cube would bring her~

"Let's wait a little longer, maybe this Rubik's Cube can't be taken down during the charging process." Lin Shi turned to Team Li and said.

"Hmm. However, when you look at this Rubik's Cube, do you have a sense of déjà vu? Team Li asked back.

"Déjà vu? No, I don't think I've ever seen this thing," Lin Shi scratched his head, and there seemed to be no trace of such a small thing in his memory.

"Look at this Rubik's cube and when you first took it out, its color seems to be slowly turning blue......" Team Li observed very carefully, the changes in these details are very weak, and it is easy to be overlooked.

When Lin Shi heard Team Li's words, he took the flashlight to the recess and carefully opened his eyes to see the color change of the Rubik's Cube!" - There really is! And now it's darker! ”

"Do you remember it now, this" Team Li's tone was a little serious, pointing to the Rubik's cube that was still changing, and continued, "This Rubik's cube is very similar to the blue USB flash drive we have seen before"

Flash drive? …… Let her think about it, it seems that she went on a mission with Team Li a long time ago and searched from the old man in the laboratory......

Laboratory! Lab again! Is there any connection between the two labs? Lin Shi was shocked, and at that time, the USB drive did have a blue liquid at one end, which would slowly turn blue under the sunlight - more importantly, the content of the USB drive, she still has an impression, a hazy and unclear environment, and some strange conversations.

There is also this Rubik's Cube-like thing, in the case of charging, it will slowly turn blue, but I don't know what this Rubik's Cube is used for.

Lin Shi thought of this, a little nervous, and a little expectant. After all, this Rubik's Cube now belongs to her, and her own things must care about what it is, and it is still a question whether she can continue to play with it in the future.

About half an hour, when Lin Shi tried to take down the Rubik's Cube again, he took it down very easily.

"Look, I've taken it!" Lin Shi hurriedly took the Rubik's Cube to Team Li, after all, Team Li still had more experience than her, and it was Team Li who discovered the changes in this Rubik's Cube first.

"I'll see if I can open it, you stand far away first." Team Li took the Rubik's Cube, because he was afraid of any danger, so he asked Lin Shi to push it away first.

"Hmm" Lin Shi is not hypocritical, after all, it would be too shabi to say anything about 'difficult and shared' at this time. Team Li is not a reckless person, and it is natural for him to dismantle it directly.

The Rubik's Cube was still very easy to disassemble, Team Li slowly peeled off the shell of the Rubik's Cube, and once those blocks left the Rubik's Cube, the dyed blue color immediately faded and the transparent glass was restored.

Lin Shi was amazed, and the doubts in his heart became bigger and bigger—what is this Rubik's Cube?

Finally, the Rubik's Cube was cleaned up, and all the decorations were removed, leaving only the part that could no longer be separated, which was the core of the Rubik's Cube.