The book-crossing case happened! The villains all want me to go to jail

During the painstaking investigation of the campus theft case, Xie Xuan and Su Yi never slacked off. They were like persistent hunters, always ready to capture clues of the truth.

One day, Wang Qiang was trying to sell an item on a second-hand trading platform when his cell phone suddenly rang, alerting him that a buyer was inquiring.

"Brother, this thing is good, how much is it?" Xie Xuan'an sent a message, his eyes focused and sharp, his fingers tapping on the keyboard flexibly, like a wise man ready to meet the challenge.

Wang Qiang replied: "The price is affordable. If you really want it, we can negotiate." As he replied, beads of sweat appeared on his forehead unconsciously, his eyes were wandering, and he didn't dare to look directly at the screen.

"I'm quite interested, but where did you get this thing?" Xie Xuan'an asked tentatively.

Wang Qiang's heart tightened, but he pretended to be calm and replied: "This is something my friend asked me to sell on his behalf. He needed money urgently, so he wanted to sell it."

"Oh? Then where did your friend get this treasure?" Xie Xuan'an pressed on, with the corners of his mouth slightly raised. That barely perceptible sneer seemed to imply that he had seen through everything.

Wang Qiang said vaguely: "I don't know about that, but he asked me to help sell it."

Xie Xuan'an sneered in his heart, knowing that Wang Qiang was lying, but he continued to deal with him calmly: "Is that so? Then you have to make sure that this thing has no problem with its origin, otherwise I dare not buy it."

Wang Qiang quickly responded: "Of course, absolutely no problem."

Xie Xuan'an then said: "Your friend is in urgent need of money, can the price be lower?"

Wang Qiang hesitated for a moment and replied: "This is already very low, it can't be lowered any further." His expression was already frowning.

Xie Xuan: "I see this thing has some minor flaws, if it's cheaper I'll buy it directly."

Wang Qiang: "Oh, it really can't be any cheaper. If you really want it, I'll give it to you at this price."

Xie Xuan: "Okay, then tell me the details of this thing, and I'll think about it."

Wang Qiang began to describe some of the features of the object, but his words were confused and unclear.

Xie Xuan: "You didn't explain it clearly, how can I buy it with confidence?"

Wang Qiang was a little impatient: "Anyway, the things are like this, you can buy them or not."

Xie Xuan'an thought to himself, this guy is getting more and more nervous, there must be something wrong. But he still replied calmly: "Don't worry, I'll ask again, if there is no problem, I will definitely buy it."

Afterwards, Xie Xuan'an continued to deal with Wang Qiang, trying to find more key clues from his increasingly panicked replies.

At the same time, Su Yi has been paying close attention to Liu Hu's every move. Liu Hu's whereabouts are mysterious, which deepens Su Yi's suspicion.

By chance, Xie Xuan'an and Su Yi found a mysterious note in the corner where they often discussed the case. With his professional knowledge, Xie Xuan'an made a detailed analysis of the material of the paper, the age of the handwriting, and the writing habits, and concluded that the note was closely related to the theft case and had a certain degree of credibility.

Although they were full of doubts about the source of the note, there were no other more valuable clues at the moment, so the two decided to take the risk and go to the abandoned laboratory building mentioned in the note to find out.

They cautiously came to the abandoned laboratory building, and as soon as they approached, the smell of decay hit them like a tide.

"Xuan'an, this place is really scary." Su Yi's voice trembled, and his body unconsciously moved close to Xie Xuan'an, grasping the corner of his clothes tightly with both hands, as if that was his only life-saving straw.

"Don't be afraid, let's be careful, maybe we can find the key clue." Xie Xuan'an held Su Yi's hand tightly, and with the faint light of the flashlight, he observed the surrounding environment with a firm and calm gaze.

The mottled marks on the walls seemed like scars left by the years, and the occasional strange noises made their nerves instantly tense.

"This sound... could there really be a ghost?" Su Yi's voice was filled with unconcealable fear, his eyes were wide open and full of panic.

Xie Xuanan took a deep breath, suppressed his inner tension, and said, "Don't scare yourself. It might be the sound of the wind or some small animal."

They continued to move forward fearfully and found a room with the door half open.

Xie Xuan gently pushed open the door, which was full of debris. He carefully observed his surroundings, taking every step lightly and cautiously, for fear of disturbing anything.

"Be careful." He reminded Su Yi in a low voice.

At this moment, a sudden gust of cold wind blew, instantly blowing out the flashlights in their hands.

"Ah!" Su Yi couldn't help but scream in horror, and threw herself into Xie Xuan'an's arms, her body shaking constantly.

"Calm down!" Xie Xuan'an shouted, and quickly protected Su Yi with his hands, while groping in the dark to light the flashlight again with the help of his memory.

"Look, there seems to be a box there." Su Yi said with a trembling voice, pointing to the corner.

They walked over with trepidation, opened the box, and found some strange tools and fragments of some items inside.

"Could this be related to the theft?" Su Yi asked expectantly.

Xie Xuan'an looked carefully, his brain working rapidly: "It's very likely, put it away first."

Just as they were about to continue exploring, they heard footsteps.

"There's someone!" Su Yi said nervously, leaning closer to Xie Xuan'an again.

Xie Xuan'an pulled Su Yi and quickly hid behind a pillar.

The footsteps were getting closer and closer, their hearts were in their throats, and they dared not breathe.

They saw a dark figure walking by, but they couldn't see who it was.

After the shadow left, they continued looking for clues.

In another room, they found some strange symbols on the wall and a tattered map.

"What does this mean?" Su Yi asked puzzledly.

Xie Xuanan thought for a moment, applied his criminal investigation knowledge, and said, "Maybe it's some kind of mark or hint."

They followed the instructions on the map and came to the entrance of a basement.

"Let's go down and take a look?" Xie Xuan'an asked, looking at Su Yi with a firm gaze.

Su Yi hesitated for a moment, but still nodded. He had full trust in Xie Xuan'an.

There was a damp smell in the basement and they walked cautiously.

Suddenly, Su Yi stepped on something and almost fell down.

Xie Xuan'an shone the flashlight and saw a worn-out notebook.

They opened the notebook and saw some blurred handwriting on it.

"These seem to be some records." Xie Xuan'an tried hard to identify them.

Xie Xuanan flipped through a few pages inadvertently and found a strange circular symbol drawn in bright red on one of the pages in the notebook.

"What does it mean?"

Just then, a noisy sound came from above.

"Oh no, we might have been discovered." Xie Xuan'an made a quick decision, grabbed Su Yi's hand and ran towards the exit.

They ran towards the exit desperately, and only breathed a sigh of relief after running out of the abandoned laboratory building.

"Although this time was thrilling, I also gained a lot." Xie Xuan'an said, wiping the sweat from his forehead.

"I hope these clues can help us uncover the truth." Su Yi said, his eyes full of trust and dependence on Xie Xuan'an.

Back in the dormitory, they began to carefully study the items and notes they brought back.

"I think these symbols may be some kind of complex multi-base code." Xie Xuan'an said, staring at the symbols intently, "It looks like a 32-base code."

Su Yi looked confused: "Base 32? What does that mean?"

Xie Xuanan patiently explained: "In the 32-base system, in addition to the ten numbers from 0 to 9, there are also 22 letters from A to V to represent numerical values. We have to find the pattern of encoding first."

They tried various possible transformations and combinations of the symbols on the notes bit by bit.

"Xuan'an, I have no idea what to do." Su Yi said somewhat frustratedly.

Xie Xuanan encouraged: "Don't be discouraged, we start with the symbols that appear most frequently, maybe we can find a breakthrough."

After repeated attempts and calculations, Xie Xuan'an suddenly had an idea: "I think I have an idea. This symbol may represent a specific combination of numbers or letters."

They continued to work hard and finally found some patterns and successfully converted some symbols.

只见转换后的账单呈现为：“9E7D2A1F 5C3B8G6K 2I0M7N4O”

However, this is only part of it, and there are more symbols waiting to be interpreted.

"Just a little bit more, Su Yi, come on!" Beads of sweat appeared on Xie Xuan'an's forehead, his expression focused and determined.

After another round of intense calculations, the codes were finally cracked and they discovered an astonishing secret.

It turned out that Wang Qiang and Liu Hu were instructed by someone to steal items in order to gain a huge profit. The bill recorded in detail the types of student items they stole and sold and the amount they earned.

"So that's how it is." Su Yi said angrily.