@sudi_media on Instagram: "Slackline speed racing is one of China’s most intense and visually surprising balance sports. Athletes sprint across a narrow, tensioned slackline that shakes under every step, forcing them to rely on perfect coordination, core strength, and lightning-fast footwork. Unlike normal slacklining, where the goal is stability or tricks, this version is a pure race—speed, balance, and recovery happening all at once. Every step sends the line oscillating, and the athlete must