Guan (instrument)
The guan (Chinese: 管; pinyin: guǎn; literally ""pipe" or "tube"") is a Chinese double reed wind instrument. The northern Chinese version is called guanzi (管子) or bili (traditional: 篳篥; simplified: 筚篥) and the Cantonese version is called houguan (喉管). It is classified as a bamboo instrument in the Ba Yin (ancient Chinese instrument classification) system. Unlike instruments in the shawm family, such as the Western oboe or Chinese suona, the guan has a cylindrical bore, giving it a clarinet-like tone.
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