Core plot description: In the rotating cabin of the Tiangong-7 space station, suspended ice crystals reflect broken light under the spotlight. Su Yingxue loosened the buckle of the magnetic boots, leaned back lightly, and tapped her toes on the bulkhead where the ice rink fence should have been. She stretched out her limbs and began to spin to the simulated "Moonlight" melody. The weightlessness makes every movement slow and eternal, but the feeling of the skates cutting across the ice only exists in the memory. In front of the surveillance screen, security officer Lu Chenzhou frowned more and more. He called up the system alarm record from three hours ago, and hovered his finger over the red button for illegal operations. Outside the cabin, a piece of debris left behind by a satellite explosion ten years ago was quietly approaching the orbital intersection at a speed of eight kilometers per second.
