Located at the foot of Cangshan Mountain's Yunnong Peak, Butterfly Spring is a sparkling gem of Dali's natural and romantic charm, just 24 km from the ancient city. This crystal-clear square pool, framed by ancient trees, is famed for its "three wonders": pure spring water, age-old butterfly tree, and the magical butterfly gathering.

Each lunar April, thousands of colorful butterflies flutter here, clustering in chains from the tree branches to the water—a breathtaking spectacle. Steeped in a touching Bai love legend, it symbolizes eternal devotion. As the iconic setting of the classic film Five Golden Flowers, it has long been a sacred spot for Bai people's romance and folk singing.