In ancient times, the "eight tones" did not refer to the eight kinds of music, but rather a general reference to the eight kinds of materials used to make musical instruments, such as what?

The Zhou Li - Chun Guan, musical instruments are divided into gold, stone, earth, leather, silk, wood, lagenaria, bamboo eight categories, called the eight sounds, is also one of the earliest classification of musical instruments.

Golden sounds include chimes, special bells, and cymbals

Stone sounds include chimes and special chimes

Earth sounds include ocarinas

Geological sounds include drums

Silk sounds include guqin and guse

Muscle sounds include percussion and drumstick

Wood sounds include taps and drumsticks

Lagenar sounds include shengs and yu

Bamboo sounds include xiao, flute, pipe, and chi

Nowadays, what is called silk and bamboo is silk and bamboo, which is the same as silk and bamboo. Silk and Bamboo is the abbreviation of Silk and Bamboo sounds.