Bamboo tube Hu, the Zhuang nationality bow and stringed musical instrument. The Zhuang language is called Ran Bai, "Ran" is a collective name for Huqin, and "Bai" is a bamboo tube, which means a Huqin made of bamboo tube. The Han people call it Bamboo Tube Hu. Popular in Guangxi Zhuang Autonomous Region Longlin, Xilin, Tianlin, Baise, Leye, Lingyun, Tianyang, Tiandong, Napo, Debao and Funing Co...