In the edge of the Orion Arm in 2492🪐, deep-space salvager Cavell was floating amidst the wreckage of the "Dawn Expedition"🔧, the flagship of the human expedition fleet that went missing a century ago, now only a half-twisted hull left in cosmic dust. When he pried open a storage compartment sealed by unknown high-temperature welding with a plasma torch, this cobalt-blue Stellar Wreckage Barrier-Shatter Serrated Dagger lay quietly in a vacuum-sealed box🚀. The electronic lock on the box had long failed due to radiation, but it miraculously isolated the blade from cosmic ray erosion. Encrypted files left by the fleet showed that this was a standard barrier-breaking dagger for assault squads. The interlaced serrated structure of the blade was designed specifically for cutting high-density hull alloys of alien civilizations. The holes on the guard and pommel were interfaces for connecting tactical power pipelines, which could increase the vibration frequency of the blade in a short time to break through defenses far harder than conventional alloys⚙️. As soon as Cavell grasped the handle covered with anti-slip ribs, a sharp pulse signal suddenly came from the neural interface on his wrist⚠️—this signal was not from human universal coding, but resonated with the trace of alien biological tissue remaining in the gaps of the blade's serrations. He looked up sharply, through the polarized visor of his helmet, and found that in the shadows deep in the wreckage, there were several irregular outlines emitting faint blue fluorescence, slowly creeping in his direction in time with the pulse👾, and the blade of the barrier-breaking dagger also began to emit a faint light of the same frequency as the outlines.