Wangdu, also known as Huangni Drum, Long Drum and Horizontal Drum. The Yao ethnic group is a mixed percussion instrument. It is popular in Liannan Yao Autonomous County of Guangdong Province and other places. The drum body is made of a whole section of paulownia wood and fir wood, and the two ends are covered with goat skin, yellow skin or dog skin. For double pulling, put seven small bamboo tube...