Artists from China's 55 ethnic minority groups are now gathering in Beijing for the 4th National Ethnic Minority Arts Festival. The grand opening gala - to be held on Tuesday night at the Bird's Nest, has finished its first round of rehearsal.The cream of the crop of China's ethnic stage arts will soon be taking to stage in Beijing. From early June till early July, theaters across the city will host dozens of ethnic performances... and the opener gives a little taste of each. Highlights include song and dance from northwest China's Ningxia Hui Autonomous Region, and children's' performances from Inner Mongolia and Xinjiang Uygur autonomous regions. The country's southwest will also be making a strong showing.