A stunt rider in a matte-black helmet and armored racing suit accelerates a superbike along the narrow arm of a construction crane high above Shanghai’s skyline. At the 2-second mark the crane begins to collapse, cables snapping and steel beams twisting. The rider hits the end of the crane arm and launches the motorcycle across open air toward a nearby rooftop. Camera on an adjacent tower captures the full arc of the jump as the collapsing crane falls behind him. The bike lands on the rooftop helipad and skids through scattered equipment. Shanghai skyline, collapsing crane stunt jump, rooftop landing momentum, cinematic aerial scale, 4K.