The flute has a membrane hole when it is blown horizontally, but no membrane hole when it is blown vertically, and it has a rear sound hole. Xiao is also called Xiao, You and Hu. Some music lyrics are like this: ancient musical instruments, made of bamboo, have sound holes like flutes. It is not stated whether it is blown horizontally or vertically. Now there are also short clarinets, which are not covered with film, and the timbre is between the flute and the flute, which is closer to the flute. Then, in ancient times, there was little difference between horizontal and vertical instruments without film, and the timbre was closer to Xiao. There are always different opinions about the origin of Xiao and Di. According to records, "Shu" has been used in the elegant music of the Zhou Dynasty. The pronoun of flute. But it is a flute that blows vertically, not horizontally. According to legend, this musical instrument originated from the Qiang nationality and was called "Shu" in the Han Dynasty. Originally four finger holes. In the Western Han Dynasty, Fang Jing added 1 hole, making it five holes. There were six finger holes in the Jin Dynasty, similar to the modern Xiao. With the excavation of archaeological experts, two horizontal strokes were unearthed in Suizhou, Hubei Province during the Spring and Autumn Period and the Warring States Period. There are six holes, which are shaped like bamboo flutes, but one end is closed. During the Wei and Jin Dynasties, it was used as the main instrument in the band. In the Tang Dynasty, there appeared a flute with bamboo pieces in the first six holes and next to it 1 hole, which was called the Seven-Star Flute (

So, which musical instrument was first created and used by people? From the perspective of human body structure, vertical blowing is more in line with the normal movement state of human body, while horizontal blowing requires one arm to extend to one side and the other arm to extend to the other side of the body across the chest. So it should be blown vertically in front and horizontally in the back. However, due to the loud volume of side blowing. Spread far away, with the film, the timbre is crisp, bright and expressive, and the number of people playing the flute is gradually increasing. Xiao has low volume, soft timbre, sweetness and elegance, and is suitable for solo and ensemble. The low volume of playing is due to the structure of the flute itself. The blowing hole of the flute is very small, and it inclines inward according to the thickness of the pipe wall, so that the airflow is too strong to blow when blowing. Xiao is suitable for playing low and euphemistic tunes, reposing quiet and distant thoughts and expressing delicate and rich emotions. Quiet and elegant, with endless aftertaste, it is hard to meet a bosom friend and revel in it. For today's fast-paced modern urban life, it will undoubtedly let you appreciate the beauty of simplicity, return to nature, relax your nerves, pursue emotional tranquility, sublimate your thinking consciousness and enjoy beauty.