In 2419, at the "Abyss Eye" research station in the Mariana Trench of the Atlantic Ocean🔬, this "Abyss Diver Piercing Blade" is a standard issue for the emergency tactical unit⛑️. 3D-printed from deep-sea pressure-resistant polymer, the holes on its blade counteract fluid resistance caused by the extreme high pressure at 12,000 meters, and the streamlined grip patterns perfectly fit the anti-slip structure of diving suit gloves🤿. During an observation mission of abyssal silicon-based organisms, Cavill, a technician at the station, was attacked by a tentacle-like predator🦑. He drew the blade, which didn't deform at all under extreme water pressure, and precisely cut off the creature's aggressive tentacles. But when he returned to the station to disinfect his equipment, he noticed that unknown pale blue mucus began to seep out of the 3D-printed pores of the blade🔵—they were symbiotic spores of the silicon-based creature, quietly infiltrating the station's life support system through the microscopic channels of the blade, and a faint, imperceptible pale blue mark had already stained Cavill's diving glove…