its pentatonic names are as follows, capitalized as follows: f, a, b, d and e. Lowercase: f, a, b, d and e.

Only in western music do you need to use uppercase or lowercase letters to distinguish western major and minor styles: major styles are marked with uppercase letters, and minor styles are marked with lowercase letters. In addition, major triad and minor chords are also distinguished by uppercase and lowercase letters.

Our national music is pentatonic and heptatonic, which is not suitable to be classified by major and minor.