This year, the Shung Ye Museum of Formosan Aborigines is featuring a special exhibition on economic and cultural change among the Bunun aborigines of southeast Taiwan.    At the same time, the National Palace Museum is holding a visiting exhibition on the cultures of the North China steppe, entitled Nomadic Waves and Cultural Exchange on the Inner Mongolian Steppe.  In honor of these two exhibits, both museums are co-sponsoring a performance and display of Bunun song, dance and culture, to be held on consecutive days in the forecourt of the National Palace Museum.  All are invited to attend this exciting and educational event.