According to the Book of Rites, Gong Yin represents the son of heaven, commander in chief Zhong Yin, Shang Yin represents courtiers, Jiao Yin represents the people, Andrew represents politics, and Yu Yin represents everything.
The basic scale of China ancient music is "Gong Shang Jiao Zheng Yin", which is different from western music. If we compare the seven scales of western music, the pentatonic scale of ancient music in China is equivalent to do, re, mi, sol and la, omitting the "fa" and "ti" with a semitone rising.
Of course, the five-tone roll call of ancient China music can't be the same as that of western music, which used "harmony, justice, delay and fairness" in the Tang Dynasty. In older times, it used "Gong, Shang, Jiao (pronounced jué), Zheng (pronounced zhǐ) and Yu". Therefore, if we pay a little attention, authentic Chinese classical music has no two scales of "Fa" and "Ti".
For example, Jasmine in Jiangnan minor is one of the ancient songs. If the whole song is sung by roll call, there are only "duo, lai, mi, suo and la" and no "fa" or "sparse" sounds. Famous ancient songs, such as "Man Jiang Hong" written by Yue Fei.