We asked you to solve cases, and here you are sharing your criminal experiences?

At 3 a.m., the technical room of the municipal bureau was filled with the incessant clatter of keyboards.

Song Qianxia poured the last crumb of potato chips into her mouth and casually brought up the internal student registration system and campus network backend logs of the School of Media.

Lin Wan came over with two freshly brewed cups of hot coffee and handed one to her.

"Xiaoyu's social relationships are actually very simple."

Lin Wan opened the visit record book in her hand and pointed to several names listed on it.

"Her hometown is a remote county in a neighboring province. Her parents run a small shop in town and save money to support her studies. After entering university, she worked part-time in the cafeteria in addition to attending classes. The only club she joined was the school's radio station."

Director Wang leaned over for a glance. "There are too many people and too much gossip at the broadcasting station. Could it be a classmate or roommate who did it? After all, girls can easily resort to dirty tricks when they have a fight."

"It shouldn't be my roommate."

Lin Wan shook her head, her analysis sound and logical.

"I paid special attention to the wording of that blackmail email this afternoon. Although the sender used a lot of profanity, he was implying that Xiaoyu was 'pretending to be high and mighty,' 'not knowing what's good for her,' and 'shameless behind her back.'"

"This humiliating manner, filled with strong possessiveness and a sense of frustration, is not the tone of a typical female classmate expressing jealousy; rather, it sounds like a man who has been rejected in his love affair and is furious."

Song Qianxia looked up from the computer screen, and Chong Linwan gave her a thumbs up.

"Sister Wanwan, your psychological profiling is absolutely amazing. Come and see this big fish I just caught."

She pushed the laptop screen in front of the two of them.

The screen displayed the access history of the anonymous forum of the School of Media Studies.

"Four days ago, on the very night the video was leaked online, a fixed MAC address on the campus network refreshed Zhou Xiaoyu's clarification post more than eighty times."

"Not only that, at 1 a.m., this device also set up a free overseas proxy node to download the full version of Zhou Xiaoyu's video from an overseas website to its local device."

Lin Wan quickly pressed on, "Is it possible to find out who this hardware address corresponds to?"

Song Qianxia swiped her finger across the touchpad and directly brought up the campus network real-name authentication registration form.

A photo of a boy with thick eyebrows, big eyes, and wearing gold-rimmed glasses popped up.

"Zhao Kai, 21 years old, is a third-year student majoring in Broadcasting and Hosting at the School of Media and Communication. He currently serves as the head of the school's radio station and the vice minister of the external relations department of the student union."

Song Qianxia clicked her tongue twice and continued reading.

"Just two days ago, this guy posted on the campus confession wall with his real name, urging everyone not to believe or spread rumors, saying that Zhou Xiaoyu is a simple and kind good girl, and that he even delivered fruit baskets to the hospital in the name of the radio station."

Director Wang was stunned.

"Good heavens, he pretends to be a good guy by giving me a fruit basket to my face, but behind my back he sends me emails to extort 50,000 yuan and try to drive me to my death? This little bastard has two faces."

"That's not all~"

Song Qianxia opened another window, which displayed a draft memo she had just seen after hacking into Zhao Kai's private cloud drive.

"That bastard pursued Zhou Xiaoyu for over half a year, giving her fake designer bags and lipsticks several times, all of which Zhou Xiaoyu returned. He held a grudge and felt that Zhou Xiaoyu didn't know what was good for her."

"A few days ago, a scandal broke out on the forum involving secret filming. This idiot couldn't even tell if it was true or false. His first reaction was that he felt betrayed by Zhou Xiaoyu and that he was being cheated on and had suffered a great injustice."

Song Qianxia pointed to a line of text on the screen and laughed in exasperation.

"Look what he wrote in his memo... 'The money and effort I spent pursuing you before, even with interest, isn't enough to warrant 50,000 yuan, right?'"

Lin Wan slammed her hand on the table in anger, making the coffee cup jump.

"Shameless. The girl never agreed to be with him from beginning to end, so what's with all this self-pity? And he even considered it an investment of effort? Is his cheap affection even gilded?"

"Found him. He's currently in room 402, building 3 of the men's dormitory at the School of Media Studies."

Song Qianxia slammed her laptop shut and jumped off her chair.

"Let's go. While this brat is still dreaming of making 50,000 yuan in bed, let's go and give him a morning gift."

……

6:30 a.m., Building 3, male dormitory of the School of Media.

It was just getting light, and all the male college students in the building were fast asleep, the only sound in the quiet corridor being their snores.

Song Qianxia somehow managed to snag a red floral-patterned vest from the first-floor duty room and put it on. She was also carrying a heavy brass bell and a bunch of large keys.

Lin Wan followed behind, trying not to laugh at her comical outfit. "Why did you have to borrow the dorm supervisor's clothes?"

"This is called psychological warfare, do you understand?"

Song Qianxia cleared her throat, walked to the door of dormitory 402, swung the iron key chain in her hand, and smashed the iron door with a deafening roar.

Clang, clang, clang. Clang, clang, clang.

"Room check! Everyone in 402, get up! Who's been illegally running an electric heater in the dorm? The meter's practically smoking! Open the door now!"

That shout was full of energy, just like a grumpy, menopausal dorm supervisor.

"Holy crap, which old lady's gone crazy this early in the morning...?"

"Kai, did you secretly cook instant noodles in the small saucepan again last night? Go open the door!"

A few seconds later, the door lock clicked open.

Wearing a designer silk pajama set and with messy hair, Zhao Kai yawned as he opened the door, muttering impatiently.

"Auntie, no one in our dorm uses prohibited electrical appliances, are you sure you didn't see wrong...?"

Before he could finish speaking, the short, middle-aged woman in the floral vest suddenly darted in, grabbed his pajamas collar with her left hand, and swiftly pulled them down with her right.

"Holy crap!"

Zhao Kai didn't even have a chance to react before he was pushed down onto the concrete floor of the corridor, his cheek pressed tightly against the dusty ground.

Lin Wan stepped forward, pulled out gleaming handcuffs, and snapped them on his wrists. She then flashed her police ID.

"Zhao Kai, Jiangcheng City Public Security Bureau Major Crimes Unit! You are suspected of blackmailing Zhou Xiaoyu using illegally filmed videos. You are hereby summoned in accordance with the law!"

This shout immediately turned the previously quiet fourth floor into a noisy mess.

The doors of the dormitories on both sides suddenly opened, and dozens of boys wearing shorts and with messy hair poked their heads out, rubbing their eyes to watch the commotion.

"What's going on? Isn't that Station Chief Zhao from the broadcasting station?"

"Extorting Zhou Xiaoyu? Holy crap, just two days ago he was leading us in speaking up for Zhou Xiaoyu on the forum, so he was the one doing it behind the scenes?!"

Zhao Kai's face changed color as he listened to the whispers of his classmates.

He struggled desperately to lift his head, veins bulging on his neck, and shouted at the top of his lungs.

"You've arrested the wrong person! The police are beating people! I'm a student council member, I wouldn't even dare step on an ant, how could I possibly extort Xiaoyu!"

"Everyone, come out and be the judge! I've liked Xiaoyu for over half a year, everyone in the college knows how devoted I am to her! I'm heartbroken that something happened to her, and the police are just randomly arresting people in the dorm without any evidence!"

His crying and shouting actually shook many of the boys around him who didn't know the truth, and they started whispering among themselves.

Song Qianxia took off her floral vest, tossed it aside, clapped her hands, and strolled into dormitory 402.

"A heart full of devotion? Station Chief Zhao, has your heart been pickled in a stinking ditch?"

She walked to Zhao Kai's desk by the window.

A clean, thin silver laptop sits on the table.

Zhao Kai shouted defiantly in the hallway, "Check everything you want! My computer password is six eights. If there's a single extortion email in there, I'll eat my computer right here!"

"Eating computer food is bad for your teeth. Save your good teeth for jail and eat cornbread."

Song Qianxia sneered, not even glancing at the computer on the table. She simply circled the desk twice and reached under it to feel the inside of the drawer slides.

This kind of hidden compartment is an old trick that's been around for ages!

She gripped a loose wooden board with her fingers and pulled it out, revealing a secondhand, old-fashioned laptop in a black shockproof bag.

There were also several overseas data SIM cards that did not require real-name registration placed next to it.

Upon seeing the black shock-absorbing bag, Zhao Kai, who was lying prone in the corridor, immediately fell silent as he was shouting and cursing.

Song Qianxia carried the black computer to the door, turned it on with one hand, and pointed the screen at Zhao Kai.

The screen was still on the encrypted email interface that hadn't been closed last night. The draft email in the sent items folder, signed "Insider," demanding 50,000 yuan, was exactly the same as the one Zhou Xiaoyu had received, even down to the punctuation.

"Come on, Station Master Zhao, do you prefer to chew up the motherboard raw, or eat the keyboard with thermal paste on it?"