"Finally back... Conan returned to Kasugano Hospital, looked at the door in front of him, and muttered. "I don't know if they're asleep."

Just as he was about to knock, the door suddenly opened.

"Conan!" Ayumi's angry voice made Conan shrink his neck. "Ayumi, you-" Halfway through the sentence, she changed her words after glancing at the environment. "Why are you all out?"

"It's nine o'clock in the evening!" Mitsuhiko also had an unhappy expression on his face. "Why did you come back at this time, Qianyu?"

"He's got something to do, staying at the house of the guy he's going to visit tonight." Conan flashed into the room and closed the door. "Excuse me, can you give me some water? I'm dying of thirst. ”

"The house of the guy he's going to visit? Can't we go? Yuan Tai said unhappily. If he lives there, it means that the environment is better than here, right? ”

"It's just that he needs to look up a lot of information there, so he doesn't have time to rush back." Conan was speechless.

"Alright, kids, let's go to bed!" Dr. Asasa pushes Ayumi Motota and Mitsuhiko back into the house. "I'm going to see the festival tomorrow morning!"

Conan followed Dr. Asasa behind him, closed the door, and worked with the three little ones to arrange the bedding and prepare for bed. But his mind was clearly not on bed.

In his mind, a face flashed intently reading the notes of Nohisa Ifukube.

Chiba Tachibana, what kind of person are you?

Or... It could be another ...

Chiba Tachibana, who were you?

。。。 It's dark at night

"Rustle—" With the sound of the tip of the pen tracing on the manuscript paper, Chiba copied the sketch on it while looking at the handwriting of Nohisa Ifukube.

"Fixing a structure with thermal expansion and contraction?" Qian Yu looked at a structural diagram and couldn't say a word for a long time.

Ifukube Nokuhisa, what kind of person are you?

If a glue or other adhesive material is not used, the connection between the two strips can only be secured by a wooden hoop containing the thread after the thread has been sanded at the end. But the hoop is destined to take up extra space and weight, reducing the usable part. Therefore, Ifukube can make use of the thermal expansion and contraction properties of wood, which also has the characteristics of thermal expansion and contraction, to create a dumbbell-shaped bamboo shoot, and then dig a groove inside the top of each of the two wooden strips that can accommodate half of the bamboo shoots. The two ends of the bamboo shoots are slightly wider than the middle part, as long as the bamboo shoots are frozen, the two ends of the bamboo shoots can smoothly pass through the card groove with the general width of the middle of the bamboo shoot at room temperature and stuff into the groove. After the shoots return to normal temperature, the shoots will be completely snapped into the groove to complete the fixation. (The diameter of the bamboo shoot is larger than the thickness of the previous hoop, so the bamboo shoot can withstand more force than the hoop.) There are almost no gaps between the wooden strips that are connected from the inside by the stuck bamboo shoots, and it is almost impossible for the opponent to catch the joints between the wooden strips and strike at the weak points.

"Oh?" The door was suddenly pushed open, and Ifubu Yakumo was grabbing a quilt and quietly walked in, ready to cover a quilt for Qianyu, who should have been tired and sleeping, but found that Qianyu hadn't slept yet, and was even copying the core content of the handwritten notes with great vigour. "Are these things really that valuable?"

"First, it's really so valuable." Qian Yu did not stop the movement of his hand and replied. "Second, we're going to quit the morning after tomorrow, so I'm really running out of time."

"So you're not sleeping tonight? Won't you go to the festival tomorrow? Hachihiro looked at Chiba and asked. Children's schedules are so irregular, which is not conducive to growth! ”

"Is there coffee and an alarm clock?" Qian Yu pinched the bridge of his nose and asked rhetorically. "The kind of coffee with a lot of caffeine and a loud alarm clock."

"Heh," Hachihiro looked at Chiba with playful eyes. "At such a young age, how did you get into the vices of adult life?"

"I might as well use a useful magic weapon, right?" Qian Yu compared the manuscript paper with the notebook, and after confirming that the essence had been understood and recorded on the manuscript paper, he turned to the next page and continued to record.

"I feel that if this continues, you can copy this whole notebook until three or four o'clock." Bahiro weighed it and frowned slightly. "You're probably going to fall asleep during the day."

"I'm more energetic than you think, go and rest first, I'll leave on my own tomorrow morning."

"Don't leave anything here," Hachihiro was about to close the door, but remembered something and instructed Chiha. "I'll wake up late tomorrow morning, and I won't open the door if you knock."

"Don't you watch the festival?" Qian Yu felt a little strange and asked.

"The festival is right outside the store, so it's more than enough for me to get up and go again." After Bahiro finished speaking, he closed the door and left. After a few moments, the light that had been emitted from the crack in the door suddenly disappeared.

“。。。” Qian Yu turned around and continued to copy the book. "It's a long night, and there's no end in sight. . . ."

However, no matter how boring it is to transcribe and digest this notebook, Qianyu must also work hard to do it, after all, the time to see this precious notebook is too short and too precious. This time must be used as much as possible.

I don't know how long the quarrel lasted, Qian Yu's eyes suddenly became pitch black, and there was a sudden sound of "crackling" metal collision in his ears. After the light returned to his eyes, Qian Yu suddenly noticed that there was something sweet in his mouth.

"Uhh "I said what a sweet taste in my mouth... It turned out that I was asleep... ”

"What sound?" Qian Yu looked at the darkness of the night, and the alarm clock showed that it was a little past four o'clock, and curiously walked to the window to see what was going on outside.

"Why are you so careless?" Outside the window, a fat man carrying a lot of things and pulling a cart said helplessly to the thin man who fell to the ground.

"I'm sorry, I'm sorry," the thin man said embarrassedly, picking up the props scattered on the ground. "My hand slipped."

Qian Yu looked at a banner on the fat man's back and the cart pulled behind him, and then he realized that they should be merchants who came to participate in the festival.

"Uhhhhh "Yawn, I'm so sleepy...+_+, drink coffee and drink coffee, or I won't even be able to open my eyes-_-"

"Ah=_=" Chiba finished a cup of coffee, squinting her eyes with an expression of enjoyment. "Sober! Keep copying the book, continue to copy the book, there are still a few pages left~~~"

——————

Author: There are two possibilities for sweetness in the mouth, the first possibility is diabetes (Qianyu's diet is definitely not high in sugar, and there is nothing defective in pancreatic islets, so of course it is not like this.) ）

The second is the dysfunction of the digestive system, which leads to abnormal secretion of amylase in the mouth, and I feel sorry for a second, and I will definitely be punished by my body for irregular life