Robots dance during the opening ceremony of the 2011 China Robot Competition in Lanzhou, capital of Northwest China's Gansu province, Aug 23, 2011.

Robots dance during the opening ceremony of the 2011 China Robot Competition in Lanzhou, capital of Northwest China's Gansu province, Aug 23, 2011. Nearly 1,000 teams from 162 colleges and universities in China took part in the competition.

A robot performs during an interactive show at the opening ceremony of the 2011 China Robot Competition in Lanzhou, Aug 23, 2011.