A robot exhibition opened to the public for free in Nanjing Science and Technology Museum on January 31, 2017. A robot paints a kid visitor’s portrait as part of the show. /CFP Photo

A robot on display can play Chinese chess, Chinese checkers, Five-in-a-row and international chess at professional level with four different players at the same time. /CFP Photo

Two robots fence in a display at the exhibition, which occupies 500 square meters in total. /CFP Photo 

A piano-playing robot performs for the audience. /CFP Photo

A fish-like robot swims in a pool at the museum. /CFP Photo