The industrious and intelligent Hani people have gradually evolved the bamboo tube used to carry water in their lives into musical instruments for singing and dancing accompaniment. The bamboo tube is mostly made of long and thick phoenix-tailed bamboo tube. The tube length is 100 cm to 120 cm and the diameter of the tube is 7 cm to 9 cm. The upper end is open and trimmed into a 45-degree inclined...