Echo from the Space Station

At the "Hermes" deep space relay station, at the 13th hour of the 408th day, engineer Yan Hui performed a boring routine task - data integrity inspection. Cold machinery and his precise thinking together maintain this lonely outpost. However, when the system suddenly detects unusual audio from a "local microphone," he hears an impossible voice—his own. The complaint I made three months ago now echoes in the vacuum of silence. A rational explanation seemed to be found, but that moment of dislocation left an irremovable crack in his perfect order.