According to the perfect fifth relationship between the second and third partials of a compound tone, that is, starting from a certain note and pushing upward by one perfect fifth, a sub-uniformity is produced, and then the sub-uniformity is pushed upward by one degree. Pure fifths produce unity again, and the rhythm determined by the continuous intergeneration is called the fifth degree. The pure fifths produce unity again, and the rhythm determined by the continuous intergeneration is called the intergenerational law of fifths.

For example, the pitch relationship between the seven basic tone levels set out in the law of fifths is different from the pitch relationship between the seven basic tone levels in the equal temperament of twelve.

Although there is also a semitone between EF and BC, it is smaller than the semitone in equal temperament. Although the remaining two adjacent tone levels are also whole tones, they are larger than the whole tones in the twelve equal temperaments. This difference in pitch is due to the difference in law methods.

This is a relatively strict legal discipline. . . . It’s better not to study it~ Just get the 12-law equal law