1. One of the five palace sounds. Usually equivalent to the do sound in the roll call of today's tune. The "Gong" sound is the master of the five tones and the king of the five tones, commanding all the tones.

2. One of the five tones of Shang. Usually equivalent to the re sound in the roll call of today's tune. The sound of "Shang" is the second level of the five tones, second to "Gong". The ancients believed that "Shang, which belongs to metal, is the image of ministers", and "the ministers are harmonious". There are tune (style) names composed of Shang sound as the main sound and knot sound.

3. One of the five tones of the horn. Usually equivalent to the mi sound in the roll call of today's tune. "Jiao" is the third level of the five tones, second to "Shang". The ancients believed that "the horn belongs to wood and is the symbol of the people." There are tune (style) names composed of the main sound of the horn sound and the knot sound.

4. One of the five tones of Zheng. Usually equivalent to the sol sound in the roll call of today's tune. "Zheng" is the fourth level of the five tones, second to "Jiao". The ancients believed that "Zheng belongs to fire and is the symbol of things". There are tune (style) names composed of Zhengyin as the main sound and the knot sound.

5. One of the five tones of feather. Usually equivalent to the la sound in the roll call of today's tune. "Yu" is the fifth level of the five tones, second to "Zheng". The ancients believed that "feathers belong to water and represent the image of things." There are tune (style) names composed of Yu sound as the main sound and knot sound.

Extended information:

The earliest name "Gong Shang Jiao Zheng Yu" was found in the Spring and Autumn Period more than 2,600 years ago. In "Guanzi·Diyuan Chapter", mathematics was used The scientific method of calculating the five tones of "Gong, Shang, Jiao, Zheng, and Yu" is the famous "three-point profit and loss method" in the history of Chinese music.

Although Gong, Shang, Jiao, Zheng and Yu are the five tones in the ancient Chinese musical scale and are often used in musicology, these five characters are often used in current lyrics, among which the more famous There is this line in a song "Long Wen": "The palace and businessmen gather feathers, the chess, calligraphy and painting are played, the peacock flies to the southeast, the Weaver Girl meets the Cowherd...".