Visitors try the automatic cleaning equipment at the "future restaurant" on display at the China International Catering Expo at the China National Convention Center in Beijing, July 6, 2012. [Photo/Asianewsphoto] 

A visitor interacts with a female robot at the reception desk of the "future restaurant" on display at the China International Catering Expo at the China National Convention Center in Beijing, July 6, 2012. The robot is able to smile, speak, and dance. [Photo/Asianewsphoto]