Human race, but was chased by girls from all races

"The entire library is a puzzle?" Long Xinyu seemed a little confused: "What do you mean?"

"What I mean is that there must be some secrets hidden in this library." Lin Tianlang explained to the red-haired girl, and then he shouted at the top of his voice, calling the other girls over: "Everyone come here!"

"What's wrong? Did you find anything?" Xu Weiwei was the first to run over and asked.

"I think we might be focusing on the wrong thing." After gathering everyone together, Lin Tianlang said seriously, "We shouldn't be focusing on finding the key, or finding the mechanism or the secret compartment."

"What do you mean?" Shirley asked, "We can't focus on finding the key... Then what should we do? What should we look for?"

"Oh, wait a minute, I think I understand what you mean!" Xu Weiwei blinked and suddenly said, "Do you remember what the puppet butler said just now?"

"You are going to the Cliff Library to solve a puzzle. Once the puzzle is solved, you will naturally get the key." Qiuyue said softly, "Weiwei, is this what you mean?"

"Yes, that's right! That's the sentence! This sentence is the key!" Xu Weiwei slapped her head and said excitedly: "Lin Tianlang is right. Our focus should not be to find the key directly, but to find the puzzle hidden in this library and then solve it! Solve the puzzle, and the key will come out by itself. At least this is how we understand the puppet butler's words."

"Yes, that's what I wanted to say." Lin Tianlang added, "Just now, Long Xinyu discovered something very strange. The contents of these books on this bookshelf are empty."

Lin Tianlang picked up the book that was thrown on the ground and held up the empty white paper inside to show the girls.

"I'm not sure if this is the case only for the books on this bookshelf, or if it's the case for all the bookshelves. Everyone can go and have a look. I guess, most likely, this entire library is a puzzle."

"Blank books... That is to say, the purpose of this library is not to store books at all!" Xu Weiwei suddenly realized: "If the purpose is not to store books, then these books on the bookshelves are just a display for us to see, right? Are you trying to say that there are secrets hidden in this library?"

"Yes, that's what I mean! But before that, we must first confirm whether the bookshelves in the entire library are all empty books." Lin Tianlang nodded and said.

Everyone dispersed again, each looking for clues. This time they had a goal, so they were no longer wandering aimlessly.

“The books here are also empty books!”

"It's the same here, it's empty too!"

"Here too!"

The girls' voices echoed in the library. After this round of searching, everyone discovered that almost all the books in the library were empty books.

"It seems that our guess is correct. All the books in this entire library are empty..." Lin Tianlang touched his chin and lowered his head to think: "What is this trying to tell us... But, what if we still need to find a secret compartment or mechanism, and this secret compartment or mechanism is a book with content hidden in the endless books on this bookshelf, what should we do? Do we really have to turn this entire library upside down and open every book to check it?"

Lin Tianlang touched his chin, thinking as he walked. He always felt that something was wrong, as if he had overlooked something, but he couldn't put his finger on it.

As he was walking, Lin Tianlang passed by Qiuyue. Qiuyue immediately called Lin Tianlang: "Master...that..."

"What's wrong?" Lin Tianlang raised his head and looked at Qiuyue.

"Master, I don't know if you have noticed... these books seem to be all placed upside down." Qiuyue said.

"Upside down...what does that mean?" Lin Tianlang frowned.

"Look at the sides of these books where the titles are written." Qiuyue pointed to the nearest book with her jade finger. "Look at these words. Although we don't know what they are, I can tell...these words are probably upside down. The whole book is also upside down."

Qiuyue said as she took a book off the shelf and flipped it upside down. After flipping the book upside down and looking at the title on the side, although she still couldn't understand the words, it immediately became much more pleasing to the eye.

"Flipped books..." Lin Tianlang's eyes swept across the rows of bookshelves and found that it seemed to be the same. All the bookshelves had books placed upside down.

Now, there are more doubts. The originally ancient and simple library suddenly became full of doubts. First, all the books were empty books, and then all the books were turned upside down. What does all this mean?

"Lin Tianlang! Come here!" At this time, Xu Weiwei's voice rang out.

“Coming!” Lin Tianlang responded, “Qiuyue, take another look. Apart from the books being placed upside down, is there anything else strange? I’ll go check over at Xu Weiwei’s place first.”

"Okay." Qiuyue nodded slightly.

Lin Tianlang ran to Xu Weiwei's side. As soon as he ran over, the silver-haired girl grabbed his clothes and shouted: "Look at these bookshelves...!"

"What's wrong?" Lin Tianlang looked in the direction of Xu Weiwei's finger and asked.

"Look carefully!" Xu Weiwei said anxiously, "Have you noticed? Look, starting from this bookshelf, then to this bookshelf, look at the sides of these books...their titles! See? They are all the same!"

The silver-haired girl looked a little anxious and spoke very quickly.

Lin Tianlang narrowed his eyes and observed carefully according to what Xu Weiwei said, and then his pupils suddenly shrank. The books on each bookshelf were the same. If you count them carefully, it is about once every 54 books, and every cycle, the books are the same.

This discovery further confirms the hypothesis that the books in the library are just for display. First of all, the books have no content, and secondly, each bookshelf is copied and pasted. It looks like a whole library of books is hidden, but in fact, there is only one bookshelf with real books.

"It feels more and more strange..." Lin Tianlang touched his chin and said, "We have discovered so many clues through the bookshelves. Now it seems more and more like a puzzle. But what do these strange bookshelves want to tell us?"

"Qiuyue just told me about her discovery. She found that the books on these bookshelves were all placed upside down. Look."

Lin Tianlang said this, then took out a book and turned it over for Xu Weiwei to see.

"Really? After turning it upside down, it really looks much better." Xu Weiwei said in an incredible voice: "No wonder I always felt that the titles of these books looked weird. Although the words are indeed incomprehensible, they are not so strange. It turns out that they are turned upside down."

“Are all books like this?”

Xu Weiwei said anxiously, and then began to look around.

"I'm afraid so." Lin Tianlang said.

Xu Weiwei began to search anxiously from one bookshelf to another, and found that just as Lin Tianlang said, all the books were placed upside down.

"Lin Tianlang... after hearing what you said, have you noticed that these lanterns... seem to be upside down as well?"

Xu Weiwei pointed to the lantern stands between the bookshelves and said.

The lantern stand is divided into two parts, the first is the lampshade, and then a triangular bracket. But according to the general situation, the triangular bracket should be below the lampshade, supporting the lampshade and wick above. But now the situation is reversed, the triangular bracket is above the lampshade, and it looks like it is upside down.

"The books on the bookshelf are upside down, and the lanterns between the bookshelves are also upside down... What does this mean? What does this puzzle want to explain?" Lin Tianlang touched his chin and fell into thought again.

While Lin Tianlang was thinking, Long Xinyu, Shirley, and Aniya were also looking for clues. Shirley looked at the width of the rectangular library to see if there were any hidden mechanisms, while Long Xinyu was still pulling out books one by one to check and search to see if there was any book that was not blank.

As for Aniya... The brown-haired girl put her finger on her lips, looked left and right, observed her surroundings, walked from left to right, and then from right to left. But as she walked, suddenly, a drop of water dripped from the ceiling and fell right on Aniya's head.

"Ouch." Ania cried out softly and covered her head.

"What's going on? Why is water dripping...?"

Aniya said to herself, but when she lowered her head, she was stunned for a moment. When she took her hand off her head, her palm was blood red. The brown-haired girl was frightened and her pretty face turned pale.

"I...I'm bleeding?"

Aniya hurriedly checked her body, but found nothing unusual. The problem was not with her, but with the "water" that had just dripped onto her head.

What just dripped onto her head was not water, but blood!

Ania slowly looked up and found a man in a suit on the ceiling of the library. To be precise, it was a corpse.

"Everyone...everyone come and see!!!" Ania screamed loudly.