quarter quotient

There is only one text message in the outbox, and the sending time is February [-], [-], New Year's Eve, at eight o'clock in the evening.

The content of the text message is a long string of irregular letters.

"avoqdx□□ldlktjwmzvgqxxopqldkl"

"I have done analysis with all kinds of encryption methods I know, but they are all wrong. I guess they randomly use some kind of book or text carrier as the medium, plus the encryption form communicated in advance, so that in addition to transmitting and receiving passwords No one can solve it for the two of you." Ji Shang leaned his head on the sofa and pressed his temple with a sad face, "I don't know what the medium is, and there is almost no possibility of solving it."

As the night deepened, Ji Shang was a little tired, and he looked at Yin Hao in this lazy posture.Yin Hao's legs were slightly apart, his elbows rested on his knees, and he stared intently at the screen in his hand.

Although Yin Hao leaned over slightly, his shoulders were still straight and his back was straight. From his back to his neck, his jawline, and then to the small part of his profile that Ji Shang could see, he drew a smooth, beautiful, strong and powerful line.

Ji Shang's thoughts, which were immersed in the encrypted text a moment ago, began to derail uncontrollably, galloping towards a dangerous zone that made his mouth dry.Fortunately, every time his heart flutters, he will be quickly pulled back by the lessons learned from the past.

Ji Shang clicked his tongue in frustration, and at the same time slapped himself on the forehead.

This slap was really hard.Yin Hao turned his head to look at Ji Shang after hearing the movement, and then laughed: "Believe it or not, I will solve it for you within 10 minutes."

Ji Shang suddenly sat up, feeling that his IQ, which has always been arrogant, was threatened. He felt that such a thing was unlikely to happen: "If you solve it within 10 minutes, I..."

Yin Hao asked, "How are you?"

Ji Shang paused, and said desperately: "Anything is fine. As long as it is not illegal or immoral."

"Okay." Yin Hao raised his eyebrows, "A verbal promise is also a promise, and the people's police cannot be deceived."

"Okay." The good word spit out from Ji Shang's mouth, obviously not as crisp and neat as before.But he has put himself on the line, and he can't flinch in despair in front of his juniors.

Yin Hao left Ji Shang with a smile that he was sure of winning, and then turned around without saying a word, writing and scribbling on the blank paper.

In order to maintain the composure he had put on, Ji Shang pretended to lean back on the sofa again, but his eyes sneaked through Yin Hao's elbow, looking at him doing ciphertext analysis on the paper the whole process.

Caesar encryption?Fence shifted?

Ji Shang couldn't help but slander, he had already tried these basic text encryption methods, and the decrypted ones were totally non-sentential garbled characters.I don't know where Yin Hao got the confidence to solve it within 10 minutes?I'm afraid he has unrealistic fantasies about his IQ.

Is this how to judge him as arrogant?Is it better to be arrogant?It sounds a bit hurtful to think too highly of yourself, but it's better not to.

Ji Shang was uncertain about the four-character idioms, so Yin Hao turned around and handed the piece of paper to him.A page full of letters lined up in rows.The last line marked with a triangle is the plaintext deciphered by Yin Hao.

Xiushuidongmatoujinwanshidian

Ji Shang calmed down, and the playful expression from the previous second was swept away. He read word by word: "Xiushui East Wharf, ten o'clock tonight."

"You really figured it out." Ji Shang shook his head, "That's not right, I tried Caesar's deciphering and moving the fence, but the result was garbled characters."

Yin Hao chuckled, and said honestly: "It's normal that you can't solve it. This is Zhijie's encryption habit. We discussed it privately when we were in school. He likes to use simple and common methods for encrypting text, and his own unique little habit. Combined. People who don't know his habits can't solve it."

Ji Shang looked at the deciphering process on the paper, still a little smokey.

Yin Hao explained: "It's actually very simple. The plaintext is shifted into three groups of letters, and after reorganization, it is replaced by Caesar encryption. Finally, the letters on the third, No. 13, and No. 20 are reassembled Move forward respectively, three, thirteen, and 23."

"You're cheating in theory, right?" Ji Shang clicked his tongue, "Why does Qin Zhijie like the number '3' so much?"

Yin Hao's face changed slightly, he paused for a moment, and then gradually smiled: "I, him, and Fu Wei were close friends in school, and my classmates nicknamed them 'Three Musketeers'. After that, we need to use numbers Zhijie especially favors the number '3'."

Ji Shang's voice fell silent for a moment. He originally wanted to sternly announce that the previous bet contract was invalidated because of Yin Hao's cheating, but he swallowed it back.

Although the encrypted text message that Qin Zhijie handed over to Ji Shang to send on his behalf in a hurry has been cracked, it seems that it will not be able to promote the mystery of Qin Zhijie's death for the time being.Ji Shang and Yin Hao held the key to open the door, but they couldn't find the keyhole of the secret door.

For them, the most important thing now is to find a way to obtain the specific content of the failed operation that Qin Zhijie participated in.

With Yin Hao's current police rank, he has no authority to view the confidential files in the police station's internal system.Even so, there is still a risky method. The electronic files cannot be consulted, but the relevant paper files are compiled and archived together with other documents and materials, and are stored in the archives of the Municipal Bureau.

……

A week later, on the outskirts of Yunpan City, on the mountainside of Xiping Mountain, Changping Nursing Home.

This is the last stop of Yunpan Institute of Technology's summer love sending activity.This station Xianxiao not only funded and sponsored, but also provided two manpower, the boss Ji Shang and the female employee Ni Xiao.

In addition to the seven or eight members of the student union, the two of Xian Xiao, and some enthusiastic parents of students also participated in the event.

After the student union finished the show, they each chatted with the elderly, cleaned up, and taught the elderly how to use smartphones.It was almost lunch time, and several parents began to leave with their students.

Ji Shang and Xiao Niba started to build a table and spread tablecloths under an old pagoda tree in the yard.Little Niba got up at three o'clock in the morning this morning and made a lot of snacks suitable for the elderly.

Sugar-free cupcakes, mango pudding, mung bean cake, grilled chicken wings and a variety of cut fresh fruits.These snacks are not only healthy and delicious, but also very small and eye-catching.

Taking advantage of Ni Xiao's turning around to take something from the fresh-keeping box, Ji Shang sneakily stretched out his hand to the mung bean cake in front of him, but before he touched it, a person ran out of the hall.

"Boss Ji, let me help you." Xiang Chao grinned his big white teeth and ran towards Ji Shang.

Ji Shang asked, "Why don't you continue to play chess with Huang Lao?"

Xiang Chao listened, and whispered: "I can't afford to offend Mr. Huang's outburst. In just one game, I regretted three pieces. If you lose to him, you will be taught a lesson. If you win, he is afraid that his blood pressure will rise."

"It's the easiest and easiest way to do physical work, and you still have to eat."

Ji Shang twisted the piece of mung bean cake that he had locked just now, and gave half of it to Xiang Chao.

Xiang Chao hesitated for a moment, took the mung bean cake, and smiled at Ji Shang.His complexion was darker, which made the originally touching smile appear innocent and straightforward.

Let Ji Shang, who has always thought a lot, walked slowly, and has a twisted heart, suddenly feel that he is very straightforward and cute, like a piece of transparent and uncut amber rough, no matter how it is polished in the future, the inside will be will not change.

Xiang Chao is a freshman in business administration. He looks like a bright and sunny boy, but he is actually a bit slow and shy.When performing a show earlier, I talked about a talk show. Because of the uncommon stalks, the elderly in the nursing home seemed to be listening to a bible.

Xiang Chao's classmates were even more exaggerated, and those who didn't understand would hiss from time to time. These people may not have any malicious intentions, at most they just wanted to make fun of the old man, but this made Xiang Chao somewhat embarrassed on stage.But fortunately there is such a presence as Ji Shang, he can catch every stalk of Xiang Chao from the beginning to the end, he responds one by one in the audience, applauds and laughs, and finally the one-man talk show almost turned into a double-mouthed comedy.

Xiang Chao quickly developed an inexplicable intimacy with this generous, handsome and kind Boss Ji who had a sympathetic heart with him, which made him put aside his slowness and shyness for the time being.

At the suggestion of the dean, Xiang Chao and Ji Shang added two more long tables, and moved out the food prepared in the canteen of the nursing home, allowing the elderly to try an open-air camping lunch.

There were quite a few people who came to participate in the love-giving activity in the morning, but not many people were willing to stay and have dinner with the elderly.There were only three students left, including Xiang Chao.

Ji Shang didn't talk about it, but he felt a little uncomfortable, so he felt that it was very valuable for these few students to stay.

While moving the table and setting the tableware, a curly-haired young woman in a light blue dress and a five or six-year-old girl came out of the activity room.

The little girl had just bid farewell to an old lady in the house, and she was bouncing forward with a palm-sized puppet in her hand.

The woman ran a few steps on high heels and caught up with the little girl: "Xiaoxue, give the puppet to mom, and mom will put it away for you."

"No, I want to take it." The little girl shook her head, "This is a gift from grandma."

"Yes, this is a gift from grandma." The woman squatted down, looked at the little girl gently and calmly, and said persuasively, "So mom will help you put it away, so that you don't accidentally fall on the ground, break it, or get dirty. manage."

The little girl thought for a moment, then handed the puppet in her hand to her mother, then seemed to be attracted by something else, and ran towards the big locust tree in the courtyard.

The puppet was placed in the woman's palm, and she held the string on the puppet's head with two fingers. After looking around, she frowned and quickly threw the puppet into the flower bed next to it.

Immediately, the woman stepped on her high heels again, and chased after the little girl.

"Second uncle."

"How is it? Did Xiaoxue have a good time today?" Xiang Chao pressed down on the little girl's skirt before hugging her up.

"Second uncle will bring me next time."

Xiang Chao scratched her nose: "It's settled, Second Uncle will bring you next time."

The little girl put her arms around Xiang Chao's neck and kissed him on the cheek.

The woman who followed from afar saw this and her face darkened: "Xiaoxue, come down quickly, how old is she, you don't know that you are wearing a small skirt."

The woman's words were clearly talking about the little girl, but she was actually reprimanding Xiang Chao for his lack of propriety.

Xiang Chao quickly squatted down and put the little girl down.Then he said with a smile: "Sister-in-law, why did you come out? It will take a while for dinner."

The woman didn't answer right away, but looked around first.

Ji Shang and Ni Xiao just saw the woman throwing the puppet, and now they feel noisy when listening to her talk, and they don't waste their eyes on her, they just turn their backs and busy preparing lunch.

Seeing that no one was paying attention to her, the expression on the woman's face immediately became impatient, but she still suppressed her voice: "Who said I want to eat? Who can eat this meal? If it weren't for Xiaoxue crying to come here today, I won't even come, okay?"

Ji Shang couldn't see Xiang Chao's expression now, nor did he hear a word from him.There was only a sudden silence.

"Mom, I want to eat here." The little girl cried.

Xiang Chao spoke, hesitantly said: "Sister-in-law, or let Xiaoxue stay, and I will take her home after dinner."

"How can I do that? How can I rest assured that Xiaoxue is left behind." The woman's voice softened, and she frowned slightly and said to the little girl, "Mom doesn't feel well right now, does Xiaoxue want to go with her?"

The little girl paused, looked at Xiang Chao, then turned to look at the woman, touched her face distressedly, and nodded.

Ji Shang went to Xiang Chaoshi again, he had already sent his sister-in-law and niece to the gate of the nursing home, and was staring at the direction in which they left in a daze.

His back was sullen, and his standing posture was a little stiff. After a long time, he turned around and forced a smile at Ji Shang.