Today is Tuesday, and if the administrator Lao Luo is not mistaken, there will be no more than ten people coming to the library this morning to borrow and read books. On this sweltering summer day, the sticky, humid air is like a hypnotic drug, making the people in it drowsy. Lao Luo's propped head almost touched the table several times, but he couldn't fall asleep completely, because every now and then another person would come in to borrow or return books—a job that was really uncomfortable and frustrating for him.

As his face tried to kiss the table again, the library door was pushed open, and Kirton, Lu Hua, Sean, and Lancey hurried in. Lu Hua raised his hand to say hello to Lao Luo, walked over and asked, "Lao Luo, is Director Xin here?" ”

"Curator Xin?" Lao Luo barely held up his confused eyes, "What are you looking for him?" ”

"Nothing, ask him something about books, is he there?"

"It should be there. In the office on the left side of the second floor. But he doesn't seem to like others to disturb him, you ......" Lao Luo was halfway through his words, and suddenly caught a glimpse of the book of poetry that Lu Hua was holding in his hand - a subtle look of surprise flashed on his face.

Lu Hua and the four of them only wanted to find the curator as soon as possible to talk about it, and they didn't notice Lao Luo's strange look. But this small detail was noticed by Kirton, who frowned slightly. Lu Hua said: "Of course, we have some important things, otherwise we wouldn't bother the curator." ”

Lao Luo opened his mouth and was about to say something, when a middle-aged man walked in at the door of the library and shouted at Lao Luo, "I will return this book." ”

Lu Hua said to Lao Luo: "The curator is in the office on the second floor? Then I'll go find him. ”

"Hmm...... Okay, ah......" Old Luo Shen agreed reluctantly—Lu Hua and the others had already walked towards the stairs.

Walking up to the second floor, Kirton said, "By the way, let's go to the reading room and pick up the two books together, and then we can directly turn them over to Director Xin." ”

"Okay." Lu Hua nodded. Several people walked together towards the reading room on the right.

"Lu Hua, the books in the reading room are not borrowed, right? Let's just take those two books out, is that appropriate? Sean asked.

"No problem, we're not borrowing it, we're showing it to the curator. Besides, this is a special situation......" Lu Hua said as he walked, suddenly stopped, slightly stunned.

In the middle of the two rows of bookshelves, he saw a person he knew, and the three of Kirton walked over and saw it, and everyone was a little surprised—because in this deserted library, they actually ran into that classmate again—Fumino—still with that featureless face, that wooden, gloomy expression.

"Ah......" Lu Hua opened his mouth and said, "Wenye...... It's such a coincidence that I've bumped into you again. ”

"yes, I'll return the book, and I'll take a look in the reading room by the way." He said that the tone did not carry any emotional characteristics.

"What are you reading?" Lan Xi asked, staring at the thick book in Fumino's hand.

"The Revolution of Learning." Fumino said as he put the book back on the shelf. "It's time for me to go back, goodbye."

Before Lu Hua and the others could say goodbye, Fumino had already turned around and walked out of the reading room.

"This person—" Lancey muttered dissatisfied, "why did he leave us every time he touched us?" It's like we're plague gods! And have you noticed, there will never be more than three conversations with him! ”

Lu Hua said: "Forget it, we didn't just know about his withdrawn personality today - besides, people may have planned to leave." ”

"Leave him alone, let's do our business." Kirton Says:

The four of them walked over to the bookshelf from yesterday's window on the right. Soon, they saw the two books they were looking for, and Sean was about to reach for them, when Lu Hua suddenly shouted, "Wait a minute!" ”

Sean looked back at him, "What's wrong?" ”

Lu Hua narrowed his eyes and said, "Someone turned over these two books after we left yesterday afternoon. ”

"How do you know?" Kirton asked in surprise.

Lu Hua said: "Because I was before I left yesterday afternoon, so that we could find these two books at once next time, I deliberately put them together, and memorized the order of these two books on the shelf - counting the fourth from the right - but now you see, the position of these two books has changed to the sixth from the right." Someone apparently pulled them out and looked at them, and then put them back in a different order. ”

Lan Xi said: "This is originally a public reading room, and there must be people who constantly pull out books and put them back, and the position between the books will naturally change, is there anything strange about this?" ”

Lu Hua shook his head and said: "No, if you look closely, the shelves where these two books are placed are full of cold books, and not many people will look at these kinds of books, so in a small empty space in front of the bookshelf, a thin layer of ash is collected - but only the position in front of these two books, because the books are pulled in and out, the ash in front of them is erased - it means that only these two books have been pulled out and read!" Moreover, this man was not interested in other books, he came directly for these two books! ”

Lu Hua looked back at Cotton and Sean and said, "With such a big bookshelf, but someone is like us, only smoking these two books to read - and pay attention, not just one of these two books, but two books at the same time - don't you think it's strange?" If it's a coincidence, it's too much of a coincidence, right? ”

Lan Qian wiped her finger lightly in front of the bookshelf, then looked at the dust on her finger and said, "Lu Hua, you are really amazing!" You can be a detective! ”

Lu Hua shrugged his shoulders: "I really learned it from "Sherlock Holmes". ”

Kirton held his chin in his hand and frowned: "It's really strange, isn't it...... Anyone else besides us is also looking into this? ”

"I'm afraid so." Lu Hua said, "Otherwise, I can't think of it, except for wanting to know about Mars?" Who else but Barthes would be interested in both books. ”

"But even then, there's something very strange about it—why did this person come to read these two books just after we've read them? Between yesterday afternoon and this morning, excluding the time when the library was closed, there was only a difference of at most an hour - it couldn't be as simple as a coincidence, could it? Sean said.

"Could it be...... Someone is secretly following us and wants to investigate what exactly is this thing we are doing? Kirton made a bold guess.

Lancy was taken aback by his words, "Someone investigating our whereabouts?" But...... We've just discovered a secret, and we've not done something illegal—is it worth being investigated? ”

But if that's not the case, how can we explain the matter of these two books? As you can see, there are very few people who come to this library, and even fewer people enter this reading room - in this case, the probability that a person coming here 'coincidentally' will come to us to read those two books is almost 1 in 10 million! I don't believe it wasn't intentional! ”

Hearing Cotton say this, Sean suddenly remembered something: "You say...... Fumino, why did he leave as soon as he saw us? ”

Several people were stunned for a moment, and their hearts were shocked at the same time - Sean's words reminded them. "Yes," said Kirton, "he was the only one in the reading room when we came in!" ”

"And we've been to this library three times, and we've run into him twice—I've been feeling a little unnatural!" Sean said, "And he happened to be where we've been!" ”

Lu Hua said in disbelief: "You guys...... Suspect that Fumino is secretly following us? But how is this possible? What is his purpose in doing this? ”

"One more thing." Lancey said, "How is it possible for Fumino to know what a few of us are doing? We haven't told him about it! ”

In vain, Cotton's surprise was a question, and he looked at the three people one by one, and asked, "Have you told anyone else about this?" ”

Lu Hua said: "I only told my mother last night that my father was not at home, and he didn't even know about it." ”

"I only told my parents, and when I did, they didn't believe me. ”

Sean nodded and said, "I'm the same, I've only told my parents about it." ”

Kirton frowned, "That's weird, we've only ever told our parents about it, and our parents would never have told anyone so soon—in that case, who else would know we're doing this?" ”