The icy acid rain lashed against the underground conduits of XinXin’anjing 🕳️, as mercenary “Rusty Finger” leaned against the nano-cement pipe wall, regulating his breathing. Corp military search drones were meticulously scanning the pipeline inch by inch 🚁, while the bright orange dagger in his palm lay quietly pressed against the web of his hand 🫳. This was no ordinary training blade: the entire weapon was 3D-printed from an insulating, non-metallic polymer, ensuring it would trigger no metal detectors 🔍. The blade’s blood groove was specially designed to hold a dose of nano-toxin, capable of incapacitating a target within three seconds upon skin penetration ⚡. Beneath the handle’s anti-slip grooves was embedded a miniature quantum signal beacon, able to transmit the coordinates of the extraction point even in complete signal-blocking conditions 📡. The five small circular indentations on the blade served as medals commemorating five successful assassination missions 🎖️. Footsteps echoed from the far end of the tunnel; the beam of a Corp guard’s tactical flashlight swept across the pipe wall, momentarily blurring Rusty Finger’s goggles 🥽. He tightened his grip on the hilt, and the orange blade caught a faint glint. In the next instant, his figure had already lunged forward—only the splashes of acidic liquid revealed that a skirmish had just taken place here 💦. All that remained was that striking shade of orange, blending into the boundless, shadowy undercurrents of the cybernetic metropolis 🌫️.