Elegance is the joy of "Wang Ji" and is called "Xia" by Zhou people in this area. "Ya" and "Xia" were commonly used in ancient times. Elegance also means "positive". At that time, Ji Wang's music was regarded as a positive tone-a model music. People in the Zhou Dynasty called Zheng Yayue, just as people in the Qing Dynasty called Kunqu Opera Ya Bu, with the meaning of honorific title. Zhu's Biography of Poetry says: "Elegance is righteousness, and singers are joy. The size of his articles is different, but the pros and cons of Confucian scholars are different. Today's test is the joy of Xiaoya and Yan Yan; It is elegance, the joy of attending the meeting, and the words of discipline. Different words and sounds have different syllables. Therefore, the difference between size and elegance lies in its content. "
"Ode" is a musical song and epic sacrificed in the ancestral temple, and its content is mostly to praise the achievements of ancestors. "Preface to Mao Poetry" said: "The description of the virtues of the eulogists is also based on their success in telling the gods." This is the meaning and usage of ode. Wang Guowei said: "Praise is slower than elegance." This is the characteristic of his music.