Conan: The Mechanic

and room.

"What are you here for?" Haibara asked sadly.

"Look at things," Qian Yu said lightly, looking at the wall clock in the Japanese room. "Looks like I saw something interesting."

After just 40 minutes of calibrating the clock once, the watch deviates by as much as 40 seconds—a chronograph with an error rate of one in sixty that is outrageous for a utilitarian product.

So, what is going on here?

As a common sense, the rotation rhythm of such a pendulum clock is controlled by the pendulum, and the faster the pendulum rotates, the faster the pendulum clock, and vice versa.

Then, the pendulum slowed down by one-sixtieth because...

The force of the pendulum is m*g*sinA (A is the swing angle), and the swing distance used to calculate the period depends on the swing distance of the center of gravity of the pendulum. In other words, the lower the center of gravity of the pendulum is, the lower the point for calculating the swing distance of the swing period is, the longer the swing distance and the longer the swing period. If the pendulum has slowed down, that means the pendulum's center of gravity has shifted downward for some reason.

Chiba used the pendulum period formula to do a mental calculation, opened the door of the pendulum box, and put her hand behind the pendulum. Without fumbling twice, Qian Yu's expression changed.

"I found something good." The corners of her mouth twitched slightly, and Qianyu said to Huihara Ai behind her. At the same time, when his hand was retracted from behind the pendulum, there was already a gem in his hand.

"So, is this the real murderer?" Haiyuan asked sadly.

"Looks—I guess it should be?" Qianyu wanted to nod, but after thinking about it, she stopped, and replaced it with a more euphemism. "If it's discovered in the end, then Tsunashima-san will be finished, then maybe Miss Tosarain will benefit?"

"So what should I do?" Haibara asked sadly.

"Otherwise," Qian Yu pouted, then took out the armband of the Youth Detective Corps from her backpack, and after poking behind the pendulum again, the bill disappeared.

"Is there a mechanism behind it?" Haibara Ai asked curiously.

"One container," Chiba shrugged. "I feel that it is an institution that has always existed, but it is not known whether Mr. Teriya Garner himself knew about it."

"So you're planning to try their reaction?" Haibara Ai probably guessed Chiba's thoughts and tried to confirm.

"Yes," Qianyu tilted her head. "If they find someone here on purpose, then there's a good chance that person is the culprit - especially after he's surprised to find a weird armband instead of the gem he's looking for."

"Speaking of which, don't you intend to take this home?" Ai Haibara suddenly looked at the gem and asked.

"People's family heirloom," Qian Yu smiled wryly. "If it's something else, it's true that I can buy it for you, but this... it's not good to take it secretly?"

"Huh?" Hai Yuanai squinted. "What bad things are you thinking about?"

"When I didn't say it," Qianyu shrugged. "but--"

At this moment, Qianyu heard unusually rapid footsteps coming from the direction of the living room.

Although the rhythm has been fast, Chiba's auxiliary unit tells him that the sound is getting smaller and smaller, which means that the person walking is constantly moving away from him - in other words, if that person is indeed in the living room, then he is walking quickly away from the living room door.

"..." Qianyu frowned and exchanged a confused look with Ai Haibara, who also reacted.

Brisk walking is obviously a very unusual behavior, so who is this brisk walking person, and why is he brisk walking?

Thinking like this, Chiba put away the gems and walked to the living room with Ai Haibara.

Before they could get to the living room, they heard a surprise sound coming from the living room. "Doyle is here!"

This voice belongs to Mr. Tsunashima.

About five minutes later, Dr. Agasa, Conan, Ai Haibara, Genta, Mitsuhiko, Ayumi, Teruya Kana, Ms. Renko, Mr. Tsunashima, and Ms. Tosabayashi had already gathered in the living room.

"Doyle," Kneeling down beside a water glass and an ice pack, Ghana Zhao also happily hugged Doyle, who was still alive and kicking, although he still looked lazy, his face was full of joy that he had lost and found. . "Mr. Tsunashima, how did you find Doyle?"

"I originally went to the living room to find out if there were any clues that I had missed before, but I didn't expect to find Doyle lying there as soon as I walked behind the speaker," Mr. Doyle replied. "Maybe it was tired of playing and ran out on its own?"

"Behind the speakers?" Miss Tosolin suddenly thought of something, and walked behind the speakers. "Hey, old man, don't you see that there is a problem with the speakers here?"

"What's the problem?" Mr. Tsunashima said with a surprised expression~www.readwn.com~ as he walked over. "What's wrong?"

"I see!" Miss Tosolin was also surprised at this moment. "All of this is a good thing for you, Miss Lianzi, right?"

"Huh?" Miss Lianzi was shocked. "Why...why do you say that?"

"You must be planning to hide Doyle in the speaker, and plan to sneak it away and keep it for yourself, right?" Miss Tosolin asked. "You don't even need to wait until the speakers are delivered to your house in a few days to take the Doyle out, just come back tomorrow with an excuse to bring a large bag and take the opportunity to put the starving Doyle in the Just take it away in your bag!"

"Stop joking..." Miss Lianzi was shocked. "I...why should I do this?"

"I don't think this is possible," Mr. Tsunashima stopped. "Mr. Garner just woke up Doyle with an ice pack and water, indicating that he should have just fallen asleep - maybe he was playing with it, secretly hiding in the speaker, and escaping from me. I wasn't careful. I got out after the examination, and because I was too sleepy, I just lay on the ground and fell asleep after getting out?"

At this moment, the vibrating sound of the mobile phone sounded - Hai Yuanai took out the mobile phone and looked at the screen.

After a moment, she spoke.

"Don't talk about that, I have a question." Facing everyone's eyes, Haibara Ai just looked at Mr. Tsunashima calmly.

"Little girl..." Mr. Tsunashima asked after being stared at by Haibara Ai. "What's matter?"

"Of course," Haibara nodded. "Can I ask, why did you bring a cake from a convenience store a few hundred meters away and feed it to Doyle?"