A robot waitress performs for customers in Jinan, capital city of east China's Shandong Province, Dec 27, 2010. [Xinhua]

Two robot waiters are at work in a restaurant, Dec 27, 2010. A restaurant using robots to serve and entertain customers recently opened in Jinan, capital city of east China's Shandong Province. The restaurant has 11 robot waiters and waitresses and mainly engages in self-service hot pot. It can cater to about 100 customers. [Xinhua]