Hilarity, unease and relief: games show China is not over the finish line in humanoid robot race

World Humanoid Robot Games showcased leaps Beijing has made in the tech, but also highlighted limitations as US rivals prepare their own launches

With exploding pelvises, enough comic pratfalls for a Buster Keaton show reel and the odd moment of ruthless violence, the World Humanoid Robot Games in Beijing gripped the world this week with an unsettling mixture of hilarity, trepidation and relief.

The five-day showcase staked out China's claim to undisputed leadership in humanoid robotics as android martial artists landed knockout roundhouse kicks and robot teams marched into the arena heralded by flag-waving captains astride giant robotic dogs. The games' blue-riband event, the 100m, did not disappoint when the robot-sprinters ran quicker than Usain Bolt before slamming mindlessly into a padded wall in a blaze of sparks, flames and flying mechanical limbs.