What musical instrument is Xiao?

Xiao is an ancient national wind instrument in China, which can be divided into two types: Xiao and Xiao. Xiao is generally made of bamboo, and there are also jade Xiao or copper Xiao made of jade. Flutes are all played vertically, and a pipe is used for solo. Dong Xiao is generally made of a bamboo, which is longer than a flute and about 2.2 cm in diameter. There is a bamboo joint at the upper end, and all bamboo joints at the lower end are open. The most common flute has six sound holes: the first five and the last one. Qin Xiao is slightly thinner and smaller than Dong Xiao. )