《史记·八书·乐书》
因而这种音乐歌声朗朗，音色像天空一样清明；钟鼓铿锵，气魄像地一样广大；五音终始相接，如四时一样的循环不止；舞姿婆娑，进退往复如风雨一般地周旋。以致与它相配的五色也错综成文而不乱，八风随月律而至没有失误，昼夜得百刻之数，没有或长或短的差失，大小月相间而成岁，万物变化终始相生，清浊相应，迭为主次。
是故清明象天，广大象地，终始象四时，周旋象风雨；五色成文而不乱，八风从律而不奸，百度得数而有常；小大相成，终始相生，倡和清浊，代相为经。
As a result, the melody of this music is clear and the tone is as clear as the sky; the bells and drums clang, and the momentum is as vast as the earth; the five tones are connected from beginning to end, like the endless cycle of the four seasons; the dancing posture is graceful, and the advance and retreat are as flexible as wind and rain. Even the five colors matched with it are well-organized and not chaotic, the eight winds follow the rhythm of the moon without fail, the day and night are 100 minutes apart, and there is no difference in length or shortness. The large and small months are intercalated to form a year, and the changes of all things are born and born, and the turbidity and turbidity correspond to each other, and they take turns as the main and the secondary.