In the Book of Songs, the earliest collection of pre-Qin poems in China, there is a saying that "Bo Shi blows the whistle and Zhong Shi blows the chi", which means that two brothers, one blows the whistle and the other blows the chi, express the brotherhood of harmony and goodwill.

Later, in archaeological excavations and handed down from generation to generation, people occasionally saw some special pre-Qin pottery or porcelain caskets.

At this time, in order to facilitate fingering, the complex crossing fingering is minimized, and the sound holes are arranged in the order similar to those of a flute. A professional player can play 26 tones, including two full semitones within 8 degrees and one overtone.

in the Qing dynasty, the red painted Yunlong casket used by the Qing court was 8.5 cm high and 7 cm in diameter. There are six sound holes in the body, the first four and the last two, all painted in red, depicting golden dragons and auspicious clouds.

during this period, people improved and developed a 9-hole pottery casket, based on the ancient 6-hole casket, and then expanded its shoulders and inner tube to increase the volume, and the sound holes increased to 8, with the first 6 and the second, plus blowing holes, and * * * was 9 holes. In the late Qing Dynasty, a new type of 9-hole pottery casket was made of purple pottery from Yixing, Jiangsu. This 9-hole casket not only keeps the original shape and timbre of the traditional casket, but also increases the volume, expands the range, and can play scales and semitones, making it a musical instrument that can be tuned, and the timbre is simple, sincere, deep and tragic, which is very distinctive. In addition, because the 9-hole mound has changed the original irregular arrangement of sound holes, it is more convenient to play according to people's playing habits and can be used for solo, ensemble or accompaniment. The appearance of 9-hole pottery casket indicates that Gu Xun has regained its vitality.

In the long historical process of our country, Yun has developed from one sound hole to three sound holes, five sound holes, six sound holes and even eight or nine sound holes, which has gone through a long period of more than 3, years, and it has also been continuously developing in sequence, so it can be seen that the development history of Yun is almost the development history of ancient Chinese musical instruments.

also, there are many kinds of lotus root in China, besides the traditional oval lotus root, there are also many types, such as gourd lotus root, grip lotus root, mother lotus root, cow head lotus root, pen container lotus root and so on.

The calabash has a throat device, which looks like a calabash, so it needs a second tire, and the process is complicated. It is the thinnest near the waist, and when the airflow passes through it, it can cause the edge sound effect again, so that the range of the high-pitched area of the trap can be appropriately expanded. Because of the longer body, playing is more convenient and labor-saving, and the timbre is softer than the traditional oval-shaped one.

Also, in ancient China, the playing skills of traditional musical instruments include long sound, gas vibration sound, lip vibration sound, etc. Among them, long sound is the basis of playing skills, and it must be full, round, loud, stable and without noise.

In summary, the commonly used techniques of Lu can be divided into three categories: qi, finger and tongue, including long tone, qi vibrato, finger vibrato, lip vibrato, vibrato, sliding tone, spitting tone, beating tone, circulating ventilation, Shuang Tu circulating ventilation and virtual blowing tone. These techniques are necessary when playing Lu.

In Chui's playing skills, the long sound is the basis of Chui's breath training. By practicing the long sound, you can master the correct breathing method, develop a good playing mouth shape, and have a smooth, full and pure pronunciation. Therefore, it is necessary to keep practicing for a certain time every day. When practicing, it can be combined with strength * * *, and the timbre must be full and round, loud and smooth without noise.

Aero-vibrato, also known as "abdominal vibrato", is produced by the airflow vibration caused by abdominal contraction. There are big, small, fast and slow vibrato, which should be determined according to the needs of music content in actual performance.

For example, the melodies of singing should use even and free air vibration, while the melodies of passion and grief should use exaggerated air vibration. The gas vibration sound can be used flexibly on the premise of ensuring the accuracy, and it is required to be uniform and smooth.

lip vibrato is a special kind of fluctuating sound produced by driving the bucket body with both hands to make the air door and blow hole move back and forth quickly. When the body moves backward, the blowing hole becomes smaller and the sound is low; When the body moves forward, the blowing hole becomes larger and the sound is higher. This kind of playing technique is often used to express magical and ethereal artistic conception.

It is worth mentioning that in the late Qing Dynasty, Tao Di was made according to the tomb. Tao Di has different shapes and sizes. Because of the different shapes, sizes and materials, the timbre of Tao Di is also different.

The timbre of this instrument is beautiful, and the voice of little Tao Di is crisp and clear; Big Tao Di's voice is deep and tactful. Tao Di can also play semitone, which is very convenient for tuning.

This kind of musical instrument belongs to the popular musical instrument in the late Qing Dynasty, which is easy to learn. Even those who have no musical foundation can play satisfactory music according to the corresponding Tao Di score after a short period of practice.

Although Tao Di is a popular musical instrument, it has a strong musical expression just like Yan, and its sound is beautiful and elegant, deep and desolate, and its musical rendering power is not inferior to that of Yan.

apart from some differences in appearance, Tao Di and Yan are mainly different in that the former has a whistle and the latter does not. * * * The similarity is that both of them are closed-tube musical instruments mainly made of clay. Therefore, "Tao Di" is often confused with "Yu" in people's impression. However, Tao Di's ancestors were Gu Xun and Mud Whistle in China, because our country had this kind of musical instrument as early as 7 years ago.