At China's robot Olympics, the finish line comes with a padded wall and a stretcher

Humanoid robots parade down a track at the start of the World Humanoid Robot Games in Beijing on Saturday. Kevin Frayer/Getty Images China's second World Humanoid Robot Games kicked off Saturday in Beijing. Robots sprinted, played soccer, boxed — and occasionally crashed into walls. The spectacle comes as China pours money into its booming humanoid robot industry. The robot uprising may have to wait. For now, the machines are still running headfirst into walls, both literal and…