Liang Yuanque carefully pulled out a piece of paper from the gap in the cover. The edges on both sides were at a right angle, and the other edge was in an irregular torn shape. It should have been torn from a large piece of paper. A corner.
"Teacher Tan, haven't you discovered this before?" Liang Yuanque held the piece of paper in front of Teacher Tan's eyes.
Teacher Tan looked at the piece of paper and shook his head, "I really didn't expect that there is a piece of paper here. Was it inserted by Lou Yating? What does she want to express?"
Liang Yuanque looked at the piece of paper and analyzed, "She should have put a large piece of letter paper in it, but then the piece of letter paper was taken away, and the person who took the paper away acted very hastily and roughly. This corner of the paper was stuck in It fell into the gap and was torn apart."
"Letter?" Teacher Tan was confused, "I never noticed that there was a letter in the notebook."
This corner of the paper could only bring so much information. Liang Yuanque stuffed it back into the cover, "Teacher Tan, did you check it immediately after Lou Yating handed the homework to you?" ?”
Teacher Tan sighed guiltily, "No, I put her homework together with other students' homework at that time, and I will correct it in order when I have time."
Obviously, Teacher Tan did not discover in time that the letter Lou Yating left behind might be a letter asking for help, and the letter was later taken away by someone unknown.
"Teacher Tan, the security in this office is not very good, right?" Liang Yuanque said, looking around.
"Yes," Teacher Tan nodded, "After all, there are no valuables here, and no one will come in specially to steal homework books or something, so teachers in the office generally don't have the habit of locking the door, only some more cautious teachers The lock will be placed after the office is found to be empty.”
Liang Yuanque thought that when he and Zhuang Youjie were waiting for Teacher Tan to finish class in the morning, the office door was locked, so that the two of them could only squat in the corridor and wait.
At that time, I heard from Zhuang Youjie that there were two offices in this teaching building. There were only two keys for each of the two offices. One was stored in the security room and the other was left in the office. The teachers in the office took turns taking the keys every night. , used to do the work of opening the door early the next morning.
In other words, when the door of the office is usually unlocked, anyone can come and take away the letter left by Lou Yating. But even if the door of the office is locked in time and no one else can come in, then every teacher in the office will not be able to enter. Everyone is suspected, even Teacher Tan.
It has been a full week and three days since Lou Yating disappeared. During this period, I don’t know how many rounds I have been responsible for getting the office key, and there is no way to lock it.
Liang Yuanque had a headache. He hated the feeling of finally finding an intersection, only to be told after a few steps that the road was closed.
But the case still had to be handled after all. He calmed down and looked at Teacher Tan, who was full of guilt. "Okay, show me the numbers left by Lou Yating."
The notebook was still in Liang Yuanque's hand. Teacher Tan was directing him to turn through a few pages. On the last page of the notebook, Lou Yating wrote a line of numbers in Chinese characters after the completed homework. .
8155453257916
This string of numbers looks messy at first glance, with obvious gaps in the middle, and the distances between them are different.
These intervals with different distances can also be regarded as due to handwriting, and there is no way to control the intervals between words well, but Liang Yuanque intuitively felt that this was not due to handwriting.
He looked through Lou Yating's notes when writing homework. Many people will form their own writing style after often writing long paragraphs. After forming the style, the intervals between words will become very even. .
Lou Yating's handwriting is very beautiful and she has her own style. It is obvious that she does not write like a child who has just learned to write, with different sizes and crooked shapes.
The interval between this string of numbers is also part of the password.
It’s really strange. Are all the girls in middle school proficient in cryptography now?
Liang Yuanque's master once asked him to learn some cryptography. When he was learning this, he realized that he was naturally very sensitive to numbers. No wonder he used to like doing calculations at home.
Later, his interest in cryptography exceeded the level of his master's knowledge. The master could not teach him, so he began to collect various books on related academic knowledge for him to read. Until later, they met a retired agent. Taught him some practical experience in cryptography.
But it is a pity that after he officially started to solve crimes, he rarely encountered password-related cases. It seems that people under the current national conditions are not accustomed to applying this knowledge to crime.
However, some logical habits developed from the study of cryptography still provided Liang Yuanque with a lot of convenience.
This time I finally encountered the password in the case. In fact, I was a little excited and wanted to show off my skills, but I ran into trouble as soon as I started.
He used several common password analysis methods to analyze the password left by the little girl, but he couldn't explain it all.
It can't be that this little girl's research on cryptography is deeper than Liang Yuanque's, or it could be said that this is her original password.
If she can create a code that is difficult to decipher, it proves that she has extremely high talent and IQ, but if she is such a person, will she be easily kidnapped?
Maybe the Lou family members who kidnapped her were all geniuses with high IQs like her? After all, it's a family inheritance.
If faced with such a terrifying family of devils, Liang Yuanque would have no choice but to wave the white flag and lie down.
But he immediately shook his head and got rid of these strange associations, making Teacher Tan next to him look puzzled.
Liang Yuanque has some arrogance in his bones. He doesn't think that no one in the world is smarter or more capable than him, but he doesn't believe that there are many people in the world who are better than him. He has been practicing so hard with his master. After many years, he will not accept this result!
He began to feel that he had overcomplicated Lou Yating, and at the same time he had overcomplicated the password. But what if it wasn't a password at all, but a room number in a big hotel?
And even if Lou Yating is very smart, she won't set the password for help so complicated, otherwise it will be useless if others can't understand it. In this case, showing off her extraordinary IQ will only make her die. Faster.
He began to look through the notes written by Lou Yating before, trying to find some useful clues in her handwriting.
Soon, his eyes were fixed on one of the assignments, which should be a copy. Before the large paragraph of text, there was the page number of the copied book and the title of the article.
And what the page number says is "Page 45."
Liang Yuanque's head was filled with lightning. It turned out that Lou Yating used this most basic codebook password. Those numbers represented the page numbers of the book!
