"Hammer" pulled Yansheng to the library, and there were not many people too early.

"What are you bringing me here for? Aren't you in a hurry? Zhao Yi, what's going on with that Wan Fei! "Yansheng is very impatient.

"I just wanted to test a conjecture." "Hammer" walked straight inside. Yansheng can only keep up.

"To judge whether Zhao Yi has really disappeared, you have to go to the places she often goes to and see if the traces of her previous existence are still there." The blonde boy explained to Yan Sheng, and pressed the elevator button on the seventh floor, "As for Wan Fei, I'm not sure yet, just go and see." ”

Zhao Yi works part-time on the seventh floor of the library, mainly sorting out the returned books and putting them back on the shelves according to classification, and she has to register them on the work record sheet before and after work every day. The rest of the time, except for classes, she basically studied on the seventh floor.

As soon as the door of the library on the seventh floor opened, the management aunt turned on the computer and sat and played with her mobile phone, thinking that no one should come to borrow books at this time.

The worksheet hangs on the wall where you just entered.

"Hammer" tidied up his clothes, made eye contact with Yan Sheng, and walked in.

"Auntie, I left some materials when I was studying here yesterday, and I will use them in class later, can I go in and pick them up?" The hammer "looked very anxious, kept looking at the watch, and muttered in his mouth: "It's all because I'm too careless, I forgot it in the book, such an important thing, I'll use it in class, I don't know if I can find it, alas."

"Don't worry, young man, look carefully, you won't lose it. Auntie will also help you find it. ”

"Thank you, Auntie", "Hammer" walked into the deepest bookshelf.

"Do you remember which book you were in with?" Auntie asked.

"A copy of the Encyclopedia of Internal Medicine, but I don't remember where I put it."

"Medical books are in the penultimate row," the aunt walked over to the row of bookshelves and began to search.

"Hammer" has already put that book in front of him.

Pretending to be looking for it, after about two or three minutes, he excitedly shouted to his aunt, "I found it!"

"Great, let's take it to class." The aunt looked at the gardenia's pure smile, and there was no doubt in her heart how the book that should have been in the penultimate row managed to get to the bookshelf in the deepest row.

As soon as the blonde boy stepped out of the library door, his lively smile immediately returned to a calm world-weary face.

Yan Sheng leaned on the staircase and raised his eyebrows, "Who would have thought that Lin Chuwei, a clinical scholar, would be a drama master." ”

The blonde boy was noncommittal.

Chu Wei, Chu Wei, hammer, hammer, well, that's how it came.

The two went down to the corner of the stairs, Yan Sheng took out his mobile phone and gave it to Chu Wei, shook his head and showed that he hadn't seen it yet.

Just now, the two cooperated very tacitly, and when the aunt went in to find the book, Yan Sheng took a picture of the work record sheet.

In order to enlarge the picture, Lin Chu carefully searched for Zhao Yi's work registration.

After turning more than a dozen pages, Chu Wei's fingers trembled slightly, he took a deep breath and slowly spit it out.

"No, as I guessed." His voice was low.

"And all the places that were originally signed by Zhao Yi have become Wan Fei."

"What!" Yan Sheng snatched the phone from Chu Wei's hand and looked at the picture carefully, "That means that Zhao Yi disappeared, and Wan Fei replaced Zhao Yi before he disappeared?"

"Yes."

Like deflated balls, the two squatted weakly against the wall.

After a long time, Yan Sheng spoke, "I shouldn't have let her take the adventure with us in the first place, did she come back?" His eyes were full of regret and guilt.

"I don't know, I regret it too." Chu Wei closed his eyes and tilted his head, he didn't expect Zhao Yi to disappear so completely.

"Thankfully, though, the two of us still remember her presence."

"yes, the two of us." As if realizing something, Chu Wei suddenly opened his eyes, "No, since she has disappeared, why do the two of us still remember?"

Yan Sheng buried his head in his arms and said in a low voice, "Because of the thing we did together, I watched her suddenly disappear from my eyes."

"But the existence of things must have a meaning for their existence."

Chu Wei straightened up and said, "Doesn't this look like a puzzle game?"

"Zhao Yi is gone, and the memories we keep about her are like a key, a clue. Only by using this clue can we find the secret of Zhao Yi's disappearance, right?"

Yan Sheng's loneliness was gradually changed by Chu Wei's words, and his interest was instantly hooked, "I didn't expect it, Hammer, worthy of you, so next, how do we use this clue?"

"Do you remember what Zhao Yi said before he disappeared?" Chu Wei asked.

She seemed to be saying, "Do you think it's a little different?" ””

"That's right, it seems that we have to start with the sound first, and we haven't heard the difference, so the next full moon is a key step in solving the puzzle."

However, for several full moons after this, the sound of stroking did not become different, and the puzzle was solved.

Until they all gradually lost their faith.

There was a hint of coolness from the not too tightly closed window, and he climbed up to Yansheng's back through the linen curtains, and his mind returned to the human specimen room full of human organs.

Chu Wei stood in front of him, took out two delicate chocolates wrapped in tin foil from his body, opened one and fed it to Yan Sheng's mouth, and the other into his mouth. He squinted his eyes and enjoyed the silkiness of the chocolate melting in his mouth, the sweet taste warming his indifferent expression, and a pure and bewitching smile bloomed on his face.

"What are you laughing at", he was puzzled, and the breath spewed out with the smell of chocolate.

Chu Wei didn't answer him, but grabbed one of his wrists and walked to the shelf on the side of the door.

"Stand still." The tone was non-negotiable.

"Why, I..."

"Don't speak, stand still."

"Oh." Yansheng nodded obediently.

Chu Wei walked to the door, unscrewed the knob of the anti-lock, held the handrail with both hands, and pulled it back sharply, and the door opened.

Yan Sheng didn't expect Chu Wei to open the door without any warning, he opened his mouth and wanted to shout to Chu Wei to stop, but he remembered that Chu Wei told him not to speak or move, so he closed his mouth again. He leaned on the shelf and regretted in his heart: when did he start listening to Chu Wei like this, and he didn't even want to object.

Chu Wei looked at the corridor, there were faint traces of fluorescence on the floor, and he was not surprised.

He brushed his hair back, turned his head to look at Yan Sheng, who was still in a state of shock, and showed a smug smile.

The blonde boy stood at the door, his elegant neck line was as soft as moonlight, but his slender and thin body was not weak at all, Yan Sheng swept his clean outline, looked at him with an inexplicable smile, and said tremblingly: "Ah Hammer, you are really scummy when you laugh like this."

"Come here." Chu Wei signaled that he could move.

Yan Sheng walked to the door, and also looked towards the hallway—there was a fluorescent trail of something on the ground, stretching from the stairs on the third floor to this doorway.

"Damn, how did you get it, it's still fluorescent, when did you get it? Is this the trail of that thing?"

Chu Wei smiled, "Well, though, I didn't make it." ”

"Ah, what's that, isn't this phosphor?"

"Come out." Chu Wei shouted loudly.

No one responded, and the building was eerily quiet.

More than ten seconds later.

"Click... Click... Click... Click..."

The sound of glass marbles rolling down came from the third floor.