筚 (pinyin: bì), alias 筚gu, 筚mi, 筚lang, 筚lu, 筚nei, 筚lindang, 筚duanxiang, a single-reed gas-sounding musical instrument, popular in the Xishuangbanna Dai Autonomous Prefecture of Yunnan Province, the Dehong Dai Jingpo Autonomous Prefecture, Lincang area, Simao area and Hainan Province and other places.

The 筚 of the Dai nationality consists of a tube body and a reed. The tube body is made of thin bamboo, with a bamboo joint at the upper end, a bamboo joint in the middle, and an open bottom at the lower end. The specifications and sizes vary greatly, the short ones are about 25 centimeters, and the older ones can reach 75 centimeters. The sound is round, soft and full of rich local flavor. It is often used for solo self-entertainment. It is not limited to any occasion and is relatively free. Generally, it is mostly at night when people are quiet, and there are no strict taboos.

The 筚 of the Li nationality is popular in the areas inhabited by the Li and Meifu Li branches of the Li nationality in Dongfang County, Hainan Province. The tone is rough and melodious, and the bass is similar to that of a Western instrument clarinet. Often used for solo. The young Li family likes to play for their own entertainment when they are herding cattle, and they often play ji to add to the fun when unmarried young men and women are entertaining together.

The Kemu people's 筚, the shape of which is the same as the Dai people's 筚, was introduced to the Kemu people's family from the Dai village. Soft sound. It is often used in solo self-entertainment or in the love life of young men and women, and it is often used to play folk tunes, which are beautiful and fascinating. The music includes "string girl tune" and so on.