Half past nine in the evening. The stuffy oil bottle woke up from a coma, feeling like his brain was being stirred up.

Accompanied by a hot pain in the hands and forehead.

He let out a dull moan. Then I heard a noise on the table in front of me.

Liu Yanshi brought a cup of hot water and put it on the table. There was a white pill on the notebook.

"Just eat it."

Stuffy Bottle frowned and looked at her.

Liu Yanshi blinked, suddenly, smiling:

"Anla, it's not the one Lala gave you, this one is ibuprofen, it's just pain-relieving."

The stuffy oil bottle still didn't speak, and his eyes seemed to say, "You know what I want to ask."

Liu Yanshi pouted, said "okay" a few times, leaned down against the back of the chair, and whispered in his ear:

"The pill that Lala gave you...... The name is 'Guillotine'. ”

The stuffy oil bottle was stunned.

Liu Yanshi continued: "The ingredients of this medicine are very similar to the truth-spitting agent used in the interrogation of prisoners, which will make people sink into a subconscious state...... It then causes interference with the nerve center. This kind of interference is absolutely fatal to the imaginary personality. ”

A hint of cunning flashed in her eyes:

"To put it simply...... After taking the 'guillotine', switch to your sub-persona, and then your sub-personality will fall into a deep sleep...... And then die. Kyogen masters call this process 'execution'. ”

The stuffy oil bottle opened its mouth slightly in surprise.

"Lara's meaning has been made clear, if you really think Mr. Demon is troublesome...... Just kill him. There's no easier way to do it......"

Liu Yanshi paused, and said with a smile:

"It's up to you anyway. I'm done! ”

Then, she took advantage of the moment when the stuffy oil bottle opened her mouth in surprise, picked up the ibuprofen on the table and stuffed it into his mouth, and then picked up the water glass and poured it down with him.

The stuffy bottle was choked and coughed. Liu Yanshi slipped away like a prank and ran to the sofa.

Shi Zuocai ignored her. He was still shocked by the seemingly casual news that Liu Yanshi said.

Truth spitting, "guillotine".

"Execution" of the Vice-Personality ......

If the sub-personality is a soul without a shell of its own, then "execution" is no different from murder.

If what Liu Yanshi said is true, maybe this is the true meaning of Kyogenshi......

They can be anyone. But the premise is to kill the last "self".

If these are true...... How many "human lives" have been stained on Liu Yanshi's hands?

The sharp pain in his mind still didn't subside, and he didn't want to think about it anymore.

Looking away at the tattered bedroom door opposite, I felt a wave of depression in my heart.

Solve this incident first, and then solve "you".

He warned himself in his head.

Shi Zuocai opened the notebook on the table, clicked on the browser, went to Weibo, entered a string of numbers with memory, and moved the mouse to the password bar.

He thought for a moment, turned his head, and said coldly to Liu Yanshi:

"Send me the text log."

Liu Yanshi poked her head out from behind the couch, the corners of her mouth still stained with potato chip crumbs.

"Huh? Oh...... Are you going to start looking it up now? ”

Shi Zuocai let out a faint "um".

"We don't have a lot of time, and when they find out where the blind spots are, the case starts to move faster. The cause of Fu Sizhe's suicide is an unstable factor that we do not understand, and if we cannot find the truth before the police investigate, it is likely to be against us. ”

Liu Yanshi understands these. Without asking, he unlocked the phone and handed it to him. They were very careful when collecting Fu Sizhe's information, and did not let Fang Qing directly send a screenshot of the text message record to Liu Yanshi, but took a picture with his mobile phone so as not to leave a message record.

Shi Zuocai took the phone, put it on the desktop, folded his hands and covered his mouth and nose for a little memory, opened the Word document, and typed a string of meaningless letters on the keyboard.

QERFGZ，1~5.

Liu Yanshi moved another mahogany chair (confirmed that it was not the one that was only used by Shi Zuo), and looked at it for a while.

"The letters are arranged in the order from top left to bottom right of the keyboard...... Did you get it from Uncle Fu's keyboard? ”

"Well, the keys with the most wear."

"You want to guess Uncle Fu's password with these?"

"Perhaps." Shi Zuo replied lightly.

"Tell me what you know. What are Fang Qing and Fu Yinger's birthdays? ”

Liu Yanshi recalled.

"Fang's mother is June 22, 19XX, and Ying'er is December 21, 19XX."

When Shi Zuo heard this, he entered two strings of numbers "19XX0622 and 19XX1221" in the document.

Liu Yanshi frowned:

"Are you sure that Uncle Fu's password is Fang's mother or Ying'er's birthday? Moreover, the password for Weibo is a combination of letters and numbers...... It's impossible to guess the password......"

Shi Zuocai shook his head and said, "Fu Sizhe and Fang Qing's bank card passwords are both XX1221. ”

Liu Yanyan was stunned: "So? ”

"It's just a matter of probability theory, there are not many clues, so I can only try." After a pause, he continued: "In China, nearly one-third of family bank card passwords are children's birthdays, and very few people use different passwords on different platforms and accounts. Because the Internet era has not been developed for a long time, most people lack data security awareness. That's why many fake websites are able to get the password to a bank card from a user's login password and then steal it...... So I think there's a good chance that the suffix of that password is XX1221, or 1221. ”

Liu Yanshi muttered:

"Even then, you can't guess the combination of letters, can you? In any case, it's too far-fetched to judge that these keys contain passwords just from the wear and tear of the keys, right? ”

Shi Zuocai shook his head and asked rhetorically:

"What's the first thing you do when you turn on your computer?"

Liu Yanshi blinked, and said a little unconfidently:

"Hmm...... Open qq? ”

"If you don't have a password to remember, the first key you press on the keyboard will be the password to log in."

Liu Yanshi narrowed his eyes and glared at him for a while:

"Don't be stupid! Keyboard wear is related to the frequency of keys, although I will enter the password every time I turn on the phone, but I will only enter it once, how can there be wear and tear! ”

Shi Zuocai sighed and said slowly:

"The degree of wear and tear of the keys is certainly linked to the frequency of use, but it is not the only reason. Another very important factor is the grease on your hands. ”

"Huh?"

"When I investigated the study, I noticed Fu Sizhe's mouse, the bottom is pasted with plastic paper, the degree of wear is very low, it should be a new purchase not long ago, but the mouse shell, especially the position of the center and left and right buttons, fades very seriously, normally speaking, the mouse just bought will not have this degree of fading...... This shows that Fu Sizhe suffers from hand hyperhidrosis, and his hands often secrete oil. ”

"When the key is pressed, the grease stays on the key. That is, in general, the keys with the most grease, that is, the first few keys pressed...... In addition to grease that makes keys fade faster, grease can make keys look dirtier than other keys once they stick to dust. This is the same as the traces left by the safe password are often the first few keys. ”

Liu Yanshi was speechless and muttered:

"No wonder you want to put the ash from the ashtray on the keyboard......"

Later, she added:

"Even then, it's hard to guess the right password combination...... There are six letters in total, and there are different permutations and combinations...... I'll do the math...... More than 700 kinds, right? ”

Shi Zuocai raised his head and glanced at her with a strange expression.

"Your math teacher taught you?"

"What are you doing?" Liu Yanshi said angrily.

"There are more than 700 permutations and combinations of six letters, and considering that the letters can be repeated, the algorithm is not 6 times 5 times 4 times 3 times 2 times 1, but 6 to the 6th power, that is, more than 46,000 kinds."

"Wouldn't that be even more impossible to guess!"

Liu Yanshi didn't finish shouting, and Shi Zuocai continued:

In fact, these six letters may not all be passwords, some are just wear and tear caused by long-term use, so we have to add five digits, four digits, three digits, two digits, and one digit, and optimistically estimate that the total number of available combinations should be within 100,000 - if you add the situation that the password combination is not a letter before a number but a number before a letter...... The number of combinations will be doubled again. ”

Liu Yanshi lowered his head and shouted listlessly:

"In vain."

Shi Zuocai changed his words and said:

"But it's not necessarily hopeless to guess the password."

"Huh? Why? Liu Yanshi looked up.

Shi Zuocai groaned for a while and said:

"The input method used by Fu Sizhe is Wubi."

Liu Yan's eyes lit up:

"So you think it's possible that the password is the order of five strokes of a certain word?"

"There are no combinations of QWE, ASD, ZXC, etc., that are connected together on the keyboard in the worn keys, and they are obviously not randomly pressed on the keyboard - so I speculate that the letters are more likely to be meaningful."

Liu Yanshi sighed:

"It's not that simple."

Shi Zuo only opened the web page, and searched the search engine for the five input sequences of the word "pay", and the key was WFY, so he directly ruled out the possibility of this combination, and then checked the "thinking", "philosophy", "ying", "er", "fang", "qing"......

After typing the names of everyone in his family, he found that his five-stroke input method did not match the worn keys on the keyboard at all, and there were often extra letters that were not in the order of high-frequency keys.

Liu Yanshi looked bored and stretched:

"I'll just say it's not that easy...... The probability of your guess is indeed quite large, but it is still too idealistic, in case Uncle Fu just randomly typed a string of letters as a password, there would be no chance to guess it at all...... It's really not good, I'll just find a way to hack this account. ”

Shi Zuocai did not respond. He pinched his eyebrows and looked solemn. After a while,But it was directly clicked on the "five strokes" of Baidu Encyclopedia,Began to study the law of the five strokes input method。

"Temporary cramming." Liu Yanshi muttered, reached for the phone on the table, and wanted to play a game.

"Don't move yet."

"What are you doing?"

"I'm going to use my phone."

"Aren't you learning Wubi? How can you learn without a week?! I'll give it to you next week! ”

"A few minutes is fine."

"You're a computer, huh?" Liu Yanshi complained with a blank eye.

Shi Zuocai didn't speak. The mouse wheel slides down quickly, browsing the relevant information of the Wubi input method.

After a while, his eyes lit up, and he cut out the word document, directly deleting the "Z" and "Q" in the string of high-frequency letters.

Liu Yan looked curious and asked:

"Did you find anything?"

"In the Wubi input method, Z is a universal key, which is generally used instead when you forget the root of a word, and it will be used many times and stained with a lot of grease anyway - it has no practical meaning in itself, so it can be ignored directly." Shi Zuocai twisted the long hair that passed his eyebrows in front of his forehead and muttered, "As for Q...... The truth is pretty much the same. For veterans who use Wubi, Q is a high-frequency key that will inevitably be used, because when the Q key is pressed, the first word that pops up is 'I'......"

Liu Yanshi blinked his eyes and exclaimed:

"Ahh In that case, that's just a combination of four letters! ERFG…… I see, the number of combinations is ......"

She stretched out her finger and broke it for a while, then peeked at Shi Zuo, and secretly unlocked her phone to bring up the calculator.

Shi Zuocai said: "338 kinds." ”

Liu Yanshi smiled awkwardly and hid her phone. Muttered: "I know! ”

She added:

"338 combinations are still a lot, and your algorithm is very problematic, even if Q is a high-frequency key that is often used, it is a little bit of a password?"

Shi Zuocai said calmly:

"When exhaustive methods have too few clues and too many answers, the most reasonable approach is to discard all the relatively low possibilities. That's the only way we can do it at the moment. ”

Liu Yanshi pursed his lips and said "Okay", then lazily turned the chair, his head drooped on the back of the chair, and teased:

"So what are you going to do now? Detective Shida, do you want to try more than 300 possibilities one by one? ”

Shi Zuocai shook his head, was silent for a while, and said amazingly:

"Perhaps, we can narrow it down again."

Liu Yanshi's eyes widened: "Won't it?" ”

"Let's try it first." Shi Zuocai exhaled: "Give me the phone." ”

Liu Yanshi turned around and quickly turned off the calculator on his phone, and handed it to him with a smile.

Shi Zuocai took the phone, clicked on the album, pretended not to see the hundreds of selfies in it, clicked on the recent photos, and flipped through the text message records of Fu Sizhe one by one.

He slid one by one, his brow furrowing tighter and tighter.

Liu Yanshi also leaned his head over, and the smell of shampoo wafted between his noses. She muttered:

"Uncle Fu is actually half an old pedant, why are there so many typos when texting?"

Shi Zuo knew that she was referring to Fu Sizhe's lack of attention to the use of "Dide".

Flip through a few text messages at random, and the content is roughly as follows:

"Sunny. If the company has something to do today, I have to work overtime to bury the documents and go home tomorrow. Please remind Ying'er to write a congratulatory letter carefully and send it to her grandfather before doing other things. ”

"Sunny. Lao Zhang said that Dongchenghui has opened a new seafood restaurant, which is very authentic. You can try it with Ying'er on Saturday. ”

"Sunny. Neighbor Adong called again, and the borrowed 30,000 yuan decoration fee will be repaid next month. I should have listened to you and stopped borrowing money everywhere, but now I really regret it. ”

The content is mostly trivial and trivial. It's just that the "land" and "get" are used where they should be used. Shi Zuocai touched his nose and muttered:

"That's ...... so"

Liu Yanwei blinked his eyes: "What is this?" What kind of mess do you have in your gourd? ”

"Fu Sizhe can't be regarded as a typo." Shi Zuocai squinted slightly:

"To be precise, in his concept, the distinction of the land is not a typo."

"Huh!? Why? ”

"Have you noticed the books on the shelves in your study?"

"Nope."

Shi Zuocai said:

"Nearly half of the books on the shelves are novels and literary works from the Ming and Qing dynasties."

Liu Yanshi was stunned and reacted:

"Speaking of which, I do have the impression that Uncle Fu often told me stories about Dream of Red Mansions when he was a child......

Shi Zuocai grinned stiffly, sighed in his heart, it turned out that monsters were raised like this, and explained:

In the literary works of the Ming and Qing dynasties, novels and biographies, there is no clear distinction between the concept of land, in fact, this concept only began to form gradually during the Republic of China. If Fu Sizhe often studies this kind of work, the consciousness of distinguishing 'land gain' will inevitably be diluted. ”

Liu Yanshi nodded suddenly, and asked again:

"But does knowing all of this help you in your exhaustive method?"

Shi Zuocai didn't speak, moved the mouse, and typed the keyword on the search engine:

of five strokes

The first page pops up the order of five strokes of the word "of": RQYY.

He thought about it, switched the input method to Wubi again, and pressed the R key.

On the input bar, the word "of" in the first place is impressive.

Liu Yan's eyes widened and widened.

Shi Zuocai breathed a sigh of relief and said calmly:

"Now, there are only thirty or forty combinations left."

There is no suspense about the next thing, there are only three letters left to choose from: E, F, and G, and Shi Zuo began to try these letter combinations one by one on the word document, leaving the combination that may be a person's name, and a more likely to become a password combination, and meaningless combinations such as "table (GE)", "and (EG)", "belly (EFG)" are eliminated, and the remaining available combinations are less than ten.

What puzzled Liu Yan was that the available combinations, such as "moon (eee)" and "wang (ggg)" and other surnames or first names, were all unimpressed by her, and she couldn't think of what these words had to do with Fu Sizhe.

When I tried the sixth combination, when I GEFXX1221, the Weibo page showed "Login Successful".

Liu Yanshi opened his mouth slightly, speechless.

The input order of GEF is typed out with the five-stroke input method, and the words obtained are:

"Blue".