1, the original sentence is:
"Poetry expresses ambition, songs always say, voices always follow, law and harmony."
2. Explain this sentence in detail:
Among them, "forever" means forever, which has the significance of expanding the appeal of poetry and making it widely and permanently circulated; "Sound" is an ancient pentatonic, also known as pentatonic. The five notes of Gong, Shang, Jiao, Zheng (zhǐ) and Yu are 1, 2, 3, 5 and 6 in modern music score, and then two changes are added, that is, the change of Gong is similar to 7 in modern music score, and the change of symbols is similar to 4 in modern music score; "Fa" refers to the twelve methods of ancient musical instruments, and also refers to the musical rules or temperament, which is extended to the meaning of norms or standards. Six methods refer to Huang Zhong, Tai Cong, Gu Xi, Yan Bin, Yi Ze and Bu She, and six methods refer to Da Lu, Ying Zhong, Nan Lu, Lin Zhong, Lv Zhong and Jia Zhong.
The original intention of this sentence is: poetry is used to express people's will, songs are used to prolong the language of poetry, sing slowly to highlight the meaning of poetry, the voice is matched with long words, and the melody is used to reconcile the singing; According to the present statement, poetry is to express feelings, thoughts and emotions, and songs are the language of poetry to express feelings, thoughts and emotions. The timbre should conform to the melody of singing, and the melody should be harmonious.
Second, the supplementary explanation:
This is a sentence in Shangshu. Introducing metrical poems alone has a great influence on later poetry creation.