Dancers Adam Chmielniak (L) and Milana Burchardt attend the press conference for the National Pavilion Day of Poland at the 2010 World Expo in Shanghai, east China, May 21, 2010. The worldwide premiere of a Chopin's music-inspires dance show "Let's Dance Chopin", with Janusz Stoklosa as composer and Maria Stoklosa as choreographer, will be held during the ceremony for the National Pavilion Day of Poland at the Expo on May 22. [Xinhua]