Cloud is a unique closed wind instrument of Han nationality, with simple timbre, which is the closest instrument to Taoism. It occupies an important position in the history of primitive art in the world.

The origin of Xun is related to the labor and production activities of Han ancestors. At first, it may be that ancestors imitated the sounds of birds and animals to trap prey. Later, with the progress of society, it evolved into a simple musical instrument, and gradually increased the sound hole, and developed into a melodic instrument that can play tunes.

Ancient wind instruments made of clay were round or oval with six holes (eight holes, nine holes, ten holes, double octaves, etc.). , and six holes are not common in the market). Also known as Tao Yu. Pottery is the most common, along with stones and bones.

Status:

As one of the important musical instruments in ancient China. More than 3,000 years ago, in ancient China, musical instruments were divided into eight types: gold, stone, earth, leather, silk, bamboo, silk and wood, which were called eight tones. In the octave, Yu leads the way.

In the whole ancient band, it plays the role of filling the alto and reconciling the high and low notes. As the ancients said, "Five tones are positive, and six tones are tones. If you are rigid and soft, you will get it, but if you lose it, you will take it lightly. Stone and stone are treated equally, and the pole is lifted. " We should treat clouds, clocks and green as equals and have the same status.

As one of the important musical instruments in ancient China. It can be confirmed in written records that it was widely used in court sacrificial activities in the early Warring States period. After the Qin and Han Dynasties, Yun became an important member of the royal gagaku family.