1. String song: In ancient literature, the word "string song" is often used to refer to music in general, especially music played by string instruments.

2. Unvoiced: The term "unvoiced" is often used to describe beautiful music in ancient books.

3. Yale: The word "Yale" originated from the ritual and music system of the Zhou Dynasty, and specifically refers to the music used in ancestral temple sacrifices. Later, the word "Yale" was also used to refer to the music in general. Elegant, pure music.

4. Immortal music: The term "immortal music" is often used to describe otherworldly, beautiful and beautiful music.

5. Sanskrit: The term "Sanskrit" originates from the Buddhist term, specifically referring to the music during Buddhist chanting. Later, the word "Sanskrit" was also used to generally refer to pure and solemn music.

6. Miaoqu: The word "miaoqu" is often used to describe musical works with clever conception and beautiful melody.

7. Shao Le: The word "Shao Le" originated from a kind of court music in ancient times, specifically referring to the music used by emperors to worship heaven, earth and ancestors. Later, the word "Shao Le" was also used. It generally refers to elegant and solemn music.