Su Yiming, a 17-year-old Chinese snowboard prodigy, became the first person in the world to pull off an insane stunt called "Backslide 1980 Indy Crail" in Austria on Thursday. Su began training with China's National Snowboarding Team for Slopestyle and Big Air when he was 14 years old. He's mastered some of the world's hardest tricks, including "Bs Triple Cork 1620 Mute" and "Cab 1800."