With its cutting-edge humanoid robots busting moves on the world’s most-watched television programme and German Chancellor Friedrich Merz touring a company factory during a state visit, both within the last month, Unitree Robotics – already a household name in China – has seen its profile move into the stratosphere. And local government officials, eager to burnish their economies by strengthening ties to up-and-coming businesses, have made the domestic start-up’s founder and CEO Wang Xingxing a....