There was an empty coffee cup with a bottom of the cup, with a little brown and black coffee stains remaining at the bottom, and the spoon was placed flat on the top edge of the cup.

Jian Chiyong folded his hands on the table, looking embarrassed, and explained: "Maybe there is a blockage on the road!"

"He ordered this place?" Saki asked as he looked at the yellow "guku" sign hanging on the background wall of the cash register.

"Well, the one I told me on the phone." The middle-aged police officer shaved his slightly greasy cheeks, as if he suddenly remembered something. He patted his left hand on the black spotted marble tabletop, and his right hand flipped open the dark brown briefcase he carried with him, and took out a half-folded piece of paper from the inside.

"I'm confused... I almost forgot what the pedestrian told me!" He handed the white paper in his hand to the young man opposite him.

Saki took it in confusion, opened the paper and looked, "What does this mean?"

The size is about a4, and there are not many words on it. The entire page is from top to bottom, with only three black characters.

Jian Chiyong touched his chin and spoke hesitantly, "I said I had three questions for you. If you answered correctly, he would agree to be your detective agency's agent."

"And there is this? Is this the reason why he let me go?"

"No... no, he mentioned to me that he would come over, but... he sometimes looks a little strange to outsiders, but he wasn't like this before..." Jian Chiyong said hesitantly.

Ignoring his words, Saki's eyes swept towards the paper.

Neat printing, "Fax it to you?"

"Um!"

"Give me a pen!"

"Give it to you!" Jian Chiyong took out a black oily pen from his briefcase.

Saki moved the teacup and other utensils slightly and spread out the dark-creased paper in the middle.

The first paragraph: A child, who piled sand bags on his bicycle, often traveled through Mexico's gold mining area and crossed from Mexico's borders to the United States. Customs officers unanimously thought he was smuggling, so they stopped him and ordered him to open the sand bag and ask for inspection, but it was filled with real sand. What method is the child smuggling? What is the smuggling?

Do you include two questions?

The first question was that Saki, who was biting the pen, wrote down the answer: a bicycle.

"Did Saki think of the answer so quickly?" Jian Chiyong was quite surprised. He thought about this question for half an hour before he thought of the answer with a colleague's prompt.

"This question is not difficult!" Immediately afterwards, he wrote a punctuation point behind the answer to the previous question, and continued to write the answer to the next question, or "bike".

"The sand bag is just used by the child to interfere with his sight. The lines mentioned that the customs clerks often saw him riding his bicycle from Mexico to the United States, and did not say that he was riding his bicycle back to Mexico. So the boy smuggled his bicycle on his bicycle and then went back to Mexico by walking or otherwise."

A male waiter in a yellow uniform, wearing a yellow triangle hat and large black-framed glasses, had a black beard on both sides of the person under his nostrils.

Holding a thick and wide menu, her voice was deliberately low and asked Saki, "Do you need to order food?"

"Not needed for the time being!" The latter said without raising his head.

Jian Chiyong covered his face, quite unwilling to give up, pointed to the second paragraph, "Then you are looking at the second question, but I can't think about the answer. Finally, the wise policeman who asked for advice suddenly became clear."

"How long does it take for him to untie me?"

"You know Mingzhi mentioned this?" The middle-aged police officer's mouth opened in an "o" shape.

"I guess, but with that guy's urinary nature, when I learned that the question on this piece of paper was targeted by me, I would probably guess it in a bad way!"

"'I think it should take ten minutes for Saki's words!', Akichie said that at that time!" Jian Chiyong recalled with his head slightly raised.

"Then I have to solve this problem within ten minutes!" Saki clenched his fists and made a bold statement.

The second paragraph: The two houses are next door to each other. The three switches in House A control the three light bulbs in House B. You can only enter and exit two houses at one time. How do you judge which three lights correspond to these three switches?

"According to ordinary logic, the first step is naturally to enter the house with a control light bulb switch! By turning on the switch, check the light and darkness of another room."

"Yes!" Jian Chiyong nodded, and he thought so at first.

"Step 2, three choices, one, two, or three." Saki looked at the table with his pen tip and frowned, "But there is a problem. No matter how you do it, you can't get the corresponding situation of three light bulbs in one step."

"That's right! I've been stuck here all the time... I've had a headache!" The middle-aged police officer held his forehead and showed an expression that was unbearable to look back.

Saki, leaning against the industrial chair, pondered for three or four minutes, and his eyes under the lens suddenly showed a shiny light. "If you only limit yourself to judging the situation of three lamps at one time by the light bulb light, it is impossible to do anything. At this time, you can open your mind. Besides the light bulb light bulb light, what other ways can you judge... It's the temperature! The temperature of the lamp!" He added excitedly.

Jianchi's police officer looked dark and sighed, "You can see it so soon."

"If this is the case, it's not enough to turn on one or three first. You can only press two switches first and turn on the two light bulbs in the house B. It has to be opened for a longer time. Let the tungsten wire in the light bulb be assumed to be an incandescent lamp and heat up sufficiently, then write for an hour," Saki said while writing "rustling" in the blank space below the second paragraph with a black oily pen.

"Next, lift one of the switches, turn off a light bulb, and then exit House A and go to House B next door. House B must have only one light on and two lights turned off, so the light that is still on corresponds to the switch that has not been lifted after being pressed. Among the two lights that are out, by touching the glass lampshade of the bulb, the ones that are still warm will correspond to the switch that are pressed and then lifted after being lifted, while the glass lampshade is cold, corresponds to the switch that has never been pressed."

"What you wrote is really detailed!" Jian Chiyong looked at the white paper that was gradually "full" by the sloppy black words.

Saki rubbed the black ink rubbing the palm of his right hand with his left palm, and swept the corner of his eyes to his wrist, "Six minutes!"

Then, he looked at the third paragraph.

"Which pen is the pen I wrote down this line?" Jian Chiyong, who was secretly laughing, memorized the text directly.

Both hands grabbed the hair on the sideburns frantically.

Saki was confused.
Chapter completed!