Huo Xiake scratched his head and said, "The explanation is a bit complicated, so I'll use mathematical reasoning." ”

"There's pen and paper here." The good assistant Hua Jiao was sent immediately.

Huo Xiake began to argue with a pen on paper:

Proof 1:

Known condition A: Before the sale of second-hand houses, they will be cleaned to enhance their appearance and sell them at a high price. Pinocchio must be cleaned before it can be placed, otherwise it will be found by the cleaning crew. Since the small western-style building was once cleaned, the accumulation of dust in all places began at the same time

Derivation B: Everything should be about the same thickness of dust

Proof 2:

Known Condition C: The bottom of the bed where the second Pinocchio is placed, the third Pinocchio, and the bookshelf on which it is placed are about the same thickness of dust

According to Proof 1

Backwards solution D: The bottom of the bed where the second Pinocchio is placed, the third Pinocchio, and the bookshelf where it is placed begin to accumulate dust at the same time, i.e., set at the same time

Proof 3:

Known Condition E: The marks left by the third Pinocchio on the bookshelf are also very clean, with little to no dust accumulation

Reverse deduction solution F: Suppose the third Pinocchio has been cleaned in the small western-style building for a period of time and then put it on the shelf, there will inevitably be a layer of dust on the imprint left by it. But the imprint is very clean, so it can be concluded that this Pinocchio was put in immediately after the small western-style building was cleaned, that is, the third Pinocchio was set up at the same time as the bookshelf

Proof 4:

Known condition G: The marks left by the second Pinocchio under the bed were very clean, with little to no dust accumulation

According to Proof 3

Derive solution H: The second Pinocchio is set at the same time as the bottom of the bed

Proof 5:

According to Proof 2, Proof 4

Derivation solution I: the bottom of the bed is set at the same time as the third Pinocchio, and the second Pinocchio is set at the same time as the bottom of the bed, that is, the second Pinocchio is placed at the same time as the third Pinocchio

Q.E.D

Xu Huanting is not a big fool after all, she is a college student and has experienced the college entrance examination, but she is not used to applying mathematical logical reasoning to real life.

Hua Jiao asked: "However, I always feel that there is a lack of critical evidence. ”

Huo Xiake said with a smile: "Under normal circumstances, it is only three things, and when I see the 'same' doll come back twice in a row, I will already be scared away." However, it is not excluded that there are some bold people, so if I guess correctly, I should be able to find a fourth or fifth to support my conjecture. ”

Xu Huanting was full of doubts and asked, "Really?" ”

Huo Xiake said: "Miss Xu, think about it, there are other places you don't go to often, but you do go occasionally." ”

Xu Huanting thought for a while and said, "Let's go to the attic!" ”

Huo Xiake nodded and said, "Okay, let's go up and have a look." ”

Xu Huanting was suspicious, and took the three of them to the attic, where there were not many things on it, only a few boxes.

Huo Xiake said: "That guy who is using tricks, although the place where Pinocchio is placed is becoming more and more hidden, he doesn't want people to find it, so he will deliberately set up some prompts. The third Pinocchio, for example, uses the uneven books on the shelves to lure people over and look through them. If Pinocchio had been here too, he would have set a hint. ”

The three of them looked around, and suddenly Xu Huanting screamed: "Look, there!" ”

Huo Xiake and Hua Jiao pointed along Xu Huanting's finger and saw a long nose exposed above the beam.

Hua Jiao was the tallest, he took the initiative to ask for help, jumped over, reached out and touched his long nose, and dragged Pinocchio down.

Huo Xiake laughed and said, "Sure enough, it's the same as I guessed!" ”

Hua Jiao looked at Pinocchio and wanted to give it to Huo Xiake, who waved his hand and signaled to Xu Huanting.

The young girl got Pinocchio in the dirty spot, and when she saw a note in her hand, she tore it down and looked at it, which said, "I'm home again!" ”

Suddenly, anger filled her chest, and she trembled with anger.

"Mixed ...... Bastard, which guy is so fucking me! I haven't offended anyone! ”

Huo Xiake slanted Xu Huanting, this girl is a typical silly white sweet, it is really unlikely to offend anyone, she thought about it seriously and asked: "Who sold this small western-style building to you?" ”

Xu Huanting said: "It was the previous owner, the one who sold unsalable books, and we traded directly without an intermediary." ”

After a pause, he asked, "Do you think he is very suspicious?" ”

Huo Xiake said: "Of course it's big, think about it, you are trading directly, that is to say, this small western-style building is only in his hands before it is sold to you, and only he has the ability to do these tricks." ”

Xu Huanting didn't understand and asked, "But what's the benefit of him doing this?" Just for the sake of pranks? ”

Huo Xiake spread his hands and said, "How do I know, it's better to ask him." ”

Hua Jiao said suddenly: "I know the reason. ”

Huo Xiake looked at his assistant in surprise.

Hua Jiao asked, "Miss Xu, you knew that this small western-style building was not clean, what were your plans?" ”

Xu Huanting said: "Of course, I am afraid and angry, I am afraid that I will be entangled in unclean things, and I am angry that the seller of unsalable books has no public morality, and he actually sold me a haunted small western-style building." ”

Hua Jiao induced him step by step: "If he calls at this time, you happen to be very scared and angry, argue with him, and scold him for not being human, and finally he is forced to agree to take back the original price of the house due to morality and law, do you sell it?" ”

"Sell!" Xu Huanting said, "At that time, I was scared to death, didn't I sell it and keep it for the New Year?" ”

Hua Jiao spread his hands and said, "This is the purpose of the previous owner of the small western-style building. ”

Huo Xiake is not very good at the economy, otherwise he would not be poor and become a dog, and asked: "What's the point of this, one in and one out, it doesn't seem to have any gains." ”

Hua Jiao shook his head and said, "No, no, there is a lot of profit, for example, he got an interest-free loan." Miss Xu said just now that the former owner sold all unsalable books, presumably he was under a lot of financial pressure, and if he found a bank loan, he would not only have to pay interest, but also agree to many harsh conditions. But if he sold the house to Miss Xu and used the long-legged Pinocchio to scare Miss Xu into agreeing to buy it back at the original price, he got a short-term interest-free loan out of thin air. If he can use the excuse of a ghost house or something, he will force Miss Xu to sell at a low price, one in and one out, and he will make a net profit. ”

Xu Huanting grew her mouth and screamed for a while: "I'm so angry, I'm looking for this seller of unsalable books to settle accounts!" ”

Huo Xiake shook his head and said, "It's useless, there is no evidence, how can I settle accounts with him." ”

Xu Huanting was suddenly dejected.

saw Huo Xiake raise his finger and said mischievously: "But as long as you don't sell the small western-style building to him, it will be the biggest punishment for him, right?" ”

Xu Huanting was stunned for a moment, then suddenly realized, nodded like pounding garlic, and said, "Thank you, Detective Huo!" Let's go, I'm in for a treat tonight, and I know a nice Japanese restaurant. ”

Presumably, this incident will teach Xu Huanting, a fledgling social freshman, a profound lesson!

However, Huo Xiake was very curious, why did Mr. Liu Shengyang, who introduced this interesting case to himself, conclude from the beginning that this was an interesting case that would not kill or hurt anyone?

Huo Xiake couldn't help but be curious, and asked on the Internet with instant messaging software.

"Teacher, you should have only heard Xu Huanting's description, and you haven't been to the scene, how did you come to the answer?"

"Chivalry, you have to learn more, in fact, I have heard Xu Huanting's explanation, and I already have a rough idea in my heart."

"How so? Teach your favorite students! ”

"In fact, the reason is very simple, people only do things blindly when they are impulsive, and at other times they have to calculate the gains and losses of everything they do. Miss Xu's encounter with this matter, so carefully planned, will inevitably involve major interests. If you carefully analyze the stakes of the matter, it is not difficult to find out who will gain and who will lose, and you will know the answer. ”

Huo Xiake suddenly realized, and praised him, Jiang is really old and spicy!

Liu Shengyang asked again: "Chivalry, through the two cases I introduced, you must have made a fortune recently." ”

"Hey, hey!"

Originally, Huo Xiake was poor and destitute, and he brazenly relied on Hua Jiao to eat and drink for nothing all day long. After the opening of the Chivalry Store, almost all of them had any income, such as:

In the case of Tuomeng, it was the Public Security Bureau that paid for it, and Huo Xiake was embarrassed to rub the country's oil.

In the case of the Big Tiger Hotel, Huo Xiake suspected that Zhang Tianyu's money was dirty and refused to ask for it.

In the Tokyo Meishen case, Duan Jupiter who hired someone was a rich woman and gave money generously, although Huo Xiake was dissatisfied that he was being used, but he still received the money after all.

As for Pinocchio's case, the silly Bai Tian Xu Huanting is a white rich beauty, and she intends to make a powerful friend like Huo Xiake, and she simply doesn't want to give money.

As a result, Huo Xiake has recently become wider, and he finally has the spare energy to pay his assistant Hua Jiao's salary. Huajiao, this guy, obviously has a lot of money, but he refuses to let go of any small profits, and he unceremoniously takes his salary without blinking his eyes, and he is a fan of money!

"Good luck!"

Published in "Detective Alliance" July-August 2020, with minor adjustments to character names and content