(Foreword)

Thorns and bumps, but there is no hesitation.

(Text)

Everyone fell silent. Looking at Ouyang Yu.

"Maybe what Changkong said is not wrong, but we are wrong." Ouyang Yu said.

"Are we wrong? Are we really wrong? Aren't these bookshelves neatly arranged? Ink asked.

"The so-called mirror array, it is worth that the two sides should be exactly the same, not just the position of the bookshelf." Ouyang Yu said and walked to the front of the bookshelf: "You don't know if you have noticed one thing, the order of the bookshelves on the left and right sides is actually exactly the same. ”

"Really! You don't say that we didn't pay attention at all. ”

But it's no wonder that there is no light here, and everyone is looking for clues in a dark place, so it is inevitable that there will be some omissions.

"If the books on the shelves are in the same order, why hasn't the door to the library been opened?" Ink Rou continued to ask.

"The answer is actually quite simple." Ouyang Yu said and put the dustless books in front of him and continued: "The key is that the position of these books is asymmetrical. ”

"I've only found half of these books, so how can they be symmetrical? If you want to match, you need at least two copies, right? Tang Xin asked.

"That's right, Ouyang Yu, you said that the key to all is in these few books without dust? But there is only one of these books, and it can't be completely symmetrical as Changkong said? Ink Rou asked.

Ouyang Yu and the books they found were indeed only one, and they couldn't be symmetrical at all. Naturally, it is impossible to complete the mirror display as Changkong said.

Ouyang Yu looked at the two books in his hand and said, "What you said is not wrong, so the most important thing for us now is to find the same books." ”

"But we've already searched all these shelves, and there's no way there's anything like this one." Murong Feng said.

Now Ouyang Yu and the books they have found include "Romance of the Three Kingdoms". Ouyang Yu gently waved the book "Romance of the Three Kingdoms" and said, "Actually, these books may not be placed on the shelves, but we have never tried to find them elsewhere. ”

"So you mean that these books may not be on the shelves?" Tang Xin asked

"That's right, the reason why we think those books will be on the shelves is because these dusty books are found on the shelves in the first place, so we think in our own minds, and we think that the same books are bound to be on the shelves, but that's not the case." Ouyang Yu said earnestly.

"In that case, let's split up and see if there's any other place where we'll find these books." Murong Feng said and began to look around.

In this way, people began to look for places other than bookshelves, places that they had not thought of at all, such as the surrounding furnishings or the surrounding desks.

After a while...

"You see, there is indeed a copy of "Romance of the Three Kingdoms" here." Tang Xin shouted happily.

"Sure enough, I'll just say, this must be a mirror array, as the book says, we just need to make the displays on the left and right exactly the same before we can leave here." Changkong said happily.

"Sky's right, but how do we determine the location of these two books? Do you put these two books on the bookshelf or in the place where Tang Xin just found? Mo Rou asked curiously. At this time, Ouyang Yu stepped forward and took the copy of "Romance of the Three Kingdoms" that she had just found in her hand from Tang Xin, and after careful observation, said: "You see, although these two "Romance of the Three Kingdoms" are the same book, they are fundamentally different. Ouyang Yu said and displayed the two books in front of everyone, and continued: "Look at these two books, one of them is the first one we found, and there is not the slightest dust on it. And the book "Romance of the Three Kingdoms" that Tang Xin found just now was covered with thick dust. ”

"I don't understand this, what is the connection between the location of the book and the dust on it?" Mo Rou asked curiously.

"It's actually quite simple, if the top of a book is all dust, it means that the book has always been fixed and has rarely been moved. So I guess that the position of this book should not need to be changed, so that means that the first place we find the dustless "Romance of the Three Kingdoms" should be placed in the symmetrical position where Tang Xin just found this "Romance of the Three Kingdoms". Ouyang Yu said that most of the people walked to Tang Xin and put the dusty "Romance of the Three Kingdoms" back to the east that Tang Xin said he had found just now, and then walked to the same place on the other side, and put the dustless Romance of the Three Kingdoms there.

"Is that okay?" Tang Xin asked curiously.

"In addition to this Romance of the Three Kingdoms, there are two other books without dust, and we need to find two more identical books and put them in a symmetrical position like just now. We should be able to get out of here. Ouyang Yu said confidently.

In this way, everyone began to search in a hurry again, and soon found another identical book in the corner of the reference room, and placed the other book in a symmetrical position as Ouyang Yu said just now.

It didn't take long either. The last book was also found, and all three books were placed symmetrically in their respective positions.

"That shouldn't be a problem, right?" Murong Feng asked.

But at the same time as Murong Feng spoke, suddenly there was a loud noise in the data room, and the door of the data room, which was originally tightly closed, opened suddenly. 、

"Look!! Look!! The door to the library was opened, and we succeeded, and we succeeded. Changkong shouted happily, this time it was indeed a great contribution to being able to leave the data.

"Alright, let's get out of here, it looks like this place is full of traps, and each of us needs to be vigilant at all times." Ouyang Yu said vigilantly.

Everyone didn't stay in the data room too much, and soon left here, although the inside of the data room was very dim, but after leaving the data room, the dazzling light made everyone unable to break away from their eyes. After a few seconds, everyone gradually got used to the brightness of the lamp. In front of them was a deep, deep corridor with no end in sight.

"It seems that we have no other choice but to walk forward." Ouyang Yu stared at the corridor in front of him and said calmly.

Under the command of Ouyang Yu, everyone walked slowly towards the depths of the corridor, fortunately, the lights in the corridor were not as dim as the data room, but the corridor was really long, and there was no end in sight after walking for about a few minutes.

(End of chapter)