| 1 | Yili was an important book of Confucianism. | |
| 2 | China is a country of courtesy and propriety. | |
| 3 | As one of Three Rites, Yili's main content is about the noble manners of Zhou Dynasty. | |
| 4 | For a long time people have had an inexplicable affection for marching liturgy and marching performance. | |
| 5 | History has proved that this marching liturgy and marching performance have greatly influenced the emergence and development of drama. |