Pig mouth drum, the Zhuang people beat the membrane sounding instrument. Named because the drum is shaped like a pig's mouth. It is popular in Xincheng County in the central part of Guangxi Zhuang Autonomous Region. The drum frame is chiseled from a whole piece of hard wood such as beech or teak. It is a hollow cone with a small upper part and a large lower part. The upper end of the drum frame i...