If you've driven through downtown Minneapolis lately you may have noticed a huge blue and yellow Big Top just off Washington Avenue along the Mississippi Riverfront. Two weeks from tonight, the tent will be filled with clowns and acrobats when the Canadian-based troupe Cirque Du Soleil opens its touring show "Dralion." Unlike Cirque's well-known Las Vegas shows "Mystere" which is an artsy journey through time and "O", an acrobatic water show,"Dralion" celebrates the four elements: air, water, fire and earth. The show also features a troupe of 37 Chinese acrobats recruited from the tiny village of Kunming. Lynn Heward, Vice President of Creation for Cirque du Solei, helped select the acrobats. She says Cirque auditioned 32 Chinese troupes in 10 days.