You went on a blind date and presented an A-level wanted criminal as a meeting gift?

Dark as ink.

Lin Chen rode his roaring heavy motorcycle away from the noisy and sinful underground black market, disappearing into the traffic of Jiangcheng.

Instead of returning directly to the teahouse, he wandered around the city several times, using the complex streets and alleys and changing his clothes several times to completely shake off any potential "tails" behind him.

Prajna is naturally suspicious, and even if she passes the lie detector test, she will never completely let her guard down.

At 2 a.m., Lin Chen returned to his backup safe house in the suburbs.

He purchased this place with the funds awarded by the system, and no one except himself and a few women knew about it.

He had to immediately pass on the core intelligence about the "Skynet Base" to Su Qingge.

But how to transmit it is a big problem.

Prajna's hacking skills are unfathomable. At this moment, the entire police communication network of Jiangcheng City, and even the private phone numbers and social media accounts of key personnel such as Su Qingge, are very likely under Prajna's close surveillance.

Any encrypted message, any suspicious phone call, could undo all his efforts tonight, and even expose Su Qingge and the entire operation plan.

Lin Chen stood by the window, looking at the city lights in the distance, his mind racing.

He needs a communication method that is absolutely secure, cannot be eavesdropped on by electronic devices, yet can accurately transmit complex information.

His gaze fell on a book on World War II cryptography on the table.

Have it.

The next day at 3 PM.

In the center of Jiangcheng City, there is an open-air café called "Left Bank".

Lin Chen, dressed in a casual jacket and wearing a baseball cap, looked like an ordinary urban youth. He sat in the corner of the cafe and ordered a latte.

A few minutes later, a woman wearing a beige trench coat and sunglasses, carrying a shopping bag, also walked into the cafe.

She didn't look around, but walked straight behind Lin Chen, sat down at the next table back to back with him, and ordered an Americano.

It's Su Qingge.

This was one of the emergency contact methods they had agreed upon long ago.

Appearing in designated public places at different times and sitting back-to-back signifies that top-secret information needs to be conveyed in person.

There was no verbal or eye contact between the two; to those around them, they appeared to be complete strangers.

Soothing jazz music filled the café, and the best friends at the next table were discussing the latest gossip; everything seemed so ordinary and peaceful.

No one could have imagined that a crucial intelligence exchange that would determine the fate of Jiangcheng was taking place silently beneath this bustling peace.

Lin Chen picked up the latte in front of him, seemingly casually supporting the bottom of the cup with his left hand, while the knuckle of his right index finger began to tap lightly on the warm ceramic cup at an extremely fast frequency, almost without making any sound.

[God-level Magic Hand Speed], now activated!

His fingertips were so fast they left afterimages in the air, and each tap was controlled to the point where the ceramic would only vibrate slightly without making a crisp sound.

But Su Qingge, who was behind him, focused all her attention on the extremely subtle vibration coming from the chair behind her.

As the daughter of a military family, she received the most rigorous special agent training from a young age, and Morse code was a compulsory course for her.

The vibrations from Lin Chen's fingertips were clearly transmitted to her back through the chair.

"Drip, tap, drip..."

A series of complex yet clear coded signals were quickly translated into text in her mind.

"Tomorrow night at 10 PM, the abandoned air-raid shelter in the north of the city will be the site of the aerial surveillance network."

Su Qingge's body tensed up instantly!

Skynet Base!

After searching for so long, they have finally found Prajna's true lair!

She forced down her excitement, picked up her coffee cup, and tapped the cup wall with her index finger in response, albeit at a slightly slower but equally precise rhythm.

The vibration traveled through the ground and reached Lin Chen's feet in a faint manner.

"What kind of support do you need?"

Lin Chen's fingertips twitched again.

"Heavy firepower on standby outside, waiting for my signal. There are hostages inside."

Su Qingge's heart sank suddenly.

hostage!

She took a deep breath and continued tapping.

"I understand, please be careful, I'll wait for you to come home."

She typed the last four words very slowly and heavily.

Lin Chen felt the heavy entrustment coming from the ground, paused for a second, and then typed out the final response.

"What about fake samples?"

Su Qinggao's reply came quickly.

"The traitor Zhao Kun has been purged according to plan."

well.

Everything was going according to his script.

Prajna believed that he had stolen the real "dark blue liquid" sample and successfully eliminated the mole within the police force, which made him even more arrogant and convinced that he was in control of everything.

Intelligence transmission complete.

Lin Chen finished the last sip of his coffee, stood up, paid the bill and left like an ordinary customer, without ever looking back.

Five minutes after he left, Su Qingge also disappeared into the crowd, carrying her shopping bags.

The afterglow of the setting sun shone on the glass windows of the café; everything seemed normal.

Unbeknownst to anyone, in those seemingly peaceful few minutes, a massive net had been quietly cast to target the most terrifying scourge of Jiangcheng's underworld.

As Su Qingge sat in the car on her way back to the police station, she took off her sunglasses. In her phoenix eyes, besides her usual calmness and competence, there was an undisguised worry.

She placed her hand on her chest, as if she could still feel the code, carrying the warmth of his fingertips, that had just traveled from the back of the chair.

That's not a password.

That was his heartbeat.