What is a pentatonic scale? Please write the name of the pentatonic scale.

The pentatonic scale is usually called "pentatonic scale" and "pentatonic scale" in ancient literature. To put it simply, the pentatonic scale refers to the order of five degrees, from palace tone to cross tone, and the order is: palace-top-cross tone-positive tone; If arranged in pitch order; otherwise:

1 2 3 5 6

Feather of the symbol of the upper horn of the palace (zhǐ)