A Chinese defence industry research facility has unveiled what it calls the world’s first wheeled and legged robot guide dog for visually impaired people, in an example of the sector’s push into a growing range of civilian applications. Hangzhou-based Zhiyuan Research Institute, affiliated with China North Industries Group, the country’s largest defence contractor, launched the robot, dubbed Xiaoyuan, on Friday at the China Care and Rehabilitation Expo in Beijing. Equipped with wheels for smooth...